Quantitative feeding system for liquid raw materials for production of composite water purifying agent

Abstract

The utility model discloses a compound water purifying agent production liquid raw material quantitative feeding system which comprises an intermediate tank, the bottom of the intermediate tank is connected with a feeding pipe and a discharging pipe respectively, the interior of the intermediate tank is slidably connected with a horizontally-arranged piston disc, and a communicating pipe is installed between a fixing frame and a balance weight pressing plate; a connecting pipe communicated with the communicating pipe is fixed to the fixing frame, a linear stepping motor is fixedly installed on the fixing frame, a lead screw of the linear stepping motor is vertically arranged, and a horizontally-arranged limiting baffle is fixed to the bottom of the lead screw. The linear stepping motor drives the limiting baffle to ascend and descend so as to control the maximum upward moving height of the piston disc and limit the effective volume of the intermediate tank below the piston disc, so that raw materials can be conveyed into the intermediate tank through the feeding pipe and accurately and quantitatively stored by the intermediate tank, and finally the raw materials are indirectly fed into the reaction kettle from the intermediate tank. Therefore, the feeding amount can be accurately controlled without being influenced by the liquid level height of the raw material in the raw material tank and the liquid pressure, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water purifying agent production equipment technical field, concretely is a kind of composite water purifying agent production liquid raw material ration feeding system. BACKGROUND

[0002] With the acceleration of industrialization pace, the requirement of water treatment is higher and higher, the treatment process of reagent to water quality not only fast, but also requires reagent to be easy to decompose and non-toxic harmless.Current water purifying agent series, there is generally slow flocculation and sedimentation, long decomposition time, high corrosion, some increase in salt content in treated water;Water purification cost is high, and the short board of current market water purifying agent is that the PH range is narrow.Therefore, the development of water purification cost, flocculation body forming fast, sedimentation speed, wide range of adaptability, easy to decompose, easy to operate, beneficial to ion exchange treatment and high-purity water treatment and high-purity water treatment is the preferred water purifying agent.

[0003] In order to obtain safe, economic and easy-to-use and effective water purifying agent product, after careful selection of water purifying agent on the market, finally the scheme of polyaluminum chloride (PAC) and polydimethyl diallyl ammonium chloride (PDDAC) is compounded is determined.Polyaluminum chloride (PAC) is composed of morphologically variable polycarboxylate complex, and is widely used in drinking water with wide PH range, fast flocculation and sedimentation speed.Polydimethyl diallyl ammonium chloride (PDDAC) is a linear polymer with cationic group, no formaldehyde and no pollution, and is widely used in high turbidity river water treatment in flood season.

[0004] The preparation method of water purifying agent is as follows: 20~22% of polyaluminum chloride, 75~77% of water, 2~4% of polydimethyl diallyl ammonium chloride are added into the reaction kettle in proportion and order, and after stirring uniformly, the successful product is obtained, which is colorless and transparent, easy to dissolve in water, with viscosity and good fluidity.The improved water purifying agent is suitable for various industrial wastewater systems.

[0005] In the traditional way, the raw materials polyaluminum chloride, water and polydimethyl diallyl ammonium chloride are directly pumped by conveying pump, the conveying volume is controlled by controlling the working power and working time of conveying pump, but since the conveying pump is directly connected with raw material tank through pipeline, the raw material liquid level and liquid pressure in raw material tank can easily affect the conveying, resulting in error in the volume of pumped raw materials.In order to reduce the error, a new type of water purifying agent production liquid raw material ration feeding system is designed. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies in the prior art, the utility model provides a kind of composite water purifying agent production liquid raw material ration feeding system, to solve the problem of volume error in the traditional way of directly pumping raw materials by conveying pump.

[0007] To solve the above technical problems, the utility model provides the following technical scheme:

[0008] A kind of composite water purifying agent production liquid raw material quantitative feeding system, including intermediate tank, the bottom of the intermediate tank is connected with feed pipe and discharge pipe respectively, check valve is mounted on the feed pipe and discharge pipe, horizontally arranged piston disc is slidably connected in the intermediate tank, counterweight pressing plate is fixed on the top of the piston disc, fixed frame is fixedly connected at the open position of the top of the intermediate tank, communication pipe is installed between the fixed frame and counterweight pressing plate;

[0009] The counterweight pressing plate and piston disc are provided with through holes corresponding to the position of communication pipe, the fixed frame is fixed with connecting pipe communicated with communication pipe, the connecting pipe is connected with air pump, and three-way exhaust valve is installed on the connecting pipe;

[0010] Linear stepper motor is fixedly installed on the fixed frame, the lead screw of the linear stepper motor is vertically arranged and the bottom is fixed with horizontally arranged limit baffle.

[0011] Preferably, the bottom of the intermediate tank is a downwardly concave cone, and the bottom of the piston disc is centrally downwardly protruding and matched with the shape of the inner wall bottom of the intermediate tank.

[0012] Preferably, the discharge pipe is located at the bottom center of the intermediate tank, and the feed end of the feed pipe is bent upward by at least extending to a position of two-thirds of the height of the intermediate tank.

[0013] Preferably, the communication pipe is a folding telescopic pipe, and the communication pipe and the connecting pipe are both pressure-resistant pipes.

[0014] Preferably, the three-way exhaust valve is an electromagnetic valve.

[0015] Preferably, the check valves 4 on the feed pipe 2 and the discharge pipe 3 are both installed near one end of the intermediate tank 1.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model controls the maximum height of the piston disc moving upward by lifting the limit baffle driven by the linear stepper motor, limits the effective volume of the intermediate tank below the piston disc, and then the raw materials can be delivered into the intermediate tank through the feed pipe, accurately quantitatively stored by the intermediate tank, and finally the raw materials are indirectly fed into the reaction kettle from the intermediate tank, so that the feeding amount can be accurately controlled without being affected by the liquid level and liquid pressure in the raw material tank, thereby improving the quality of the product and solving the problem of volume error in pumping raw materials by the traditional direct pumping pump. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1It is the whole structure schematic view of the utility model;

[0019] Fig. 2 It is the intermediate tank internal structure schematic view of the utility model;

[0020] Fig. 3 It is the piston disc and the counterweight pressing plate profile view of the utility model.

[0021] In the drawing: 1, intermediate tank;2, feed pipe;3, discharge pipe;4, check valve;5, piston disc;6, counterweight pressing plate;7, fixed frame;8, communication pipe;9, through hole;10, connecting pipe;11, inflation pump;12, three-way exhaust valve;13, linear stepper motor;14, limit baffle. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0023] As Figs. 1-3 Indicated, the utility model provides a kind of technical scheme: a kind of composite water purifying agent production liquid raw material quantitative feeding system, including intermediate tank 1, the bottom of intermediate tank 1 is connected with feed pipe 2 and discharge pipe 3 respectively, discharge pipe 3 is located in the bottom center of intermediate tank 1, the feed end of feed pipe 2 is bent upwards at least to extend to the position of two-thirds of the height of intermediate tank 1;

[0024] Feed pipe 2 and discharge pipe 3 are all installed with check valve 4, check valve 4 on feed pipe 2 and discharge pipe 3 are all installed in the end close to intermediate tank 1, the inside of intermediate tank 1 is slidably connected with the piston disc 5 of horizontal arrangement, the bottom of intermediate tank 1 is the conical shape of central downward concave, the bottom center of piston disc 5 is downward convex and the shape of the bottom inner wall of intermediate tank 1 is adapted;

[0025] The top of piston disc 5 is fixed with counterweight pressing plate 6, the top open position of intermediate tank 1 is fixedly connected with fixed frame 7, fixed frame 7 and counterweight pressing plate 6 are installed with communication pipe 8, counterweight pressing plate 6 and piston disc 5 are provided with through hole 9 in the position corresponding to communication pipe 8, communication pipe 8 is folding telescopic pipe;

[0026] The fixed frame 7 is fixed with a connecting pipe 10 communicated with a communicating pipe 8, the communicating pipe 8 and the connecting pipe 10 are pressure-resistant pipes, the connecting pipe 10 is connected with an air pump 11, and a three-way exhaust valve 12 is installed on the connecting pipe 10, the three-way exhaust valve 12 is an electromagnetic valve, a linear stepping motor 13 is fixedly installed on the fixed frame 7, and a limiting baffle 14 is fixed at the bottom of the lead screw of the linear stepping motor 13 and is horizontally arranged.

[0027] Working principle:

[0028] The plurality of raw materials are respectively fed through independent feeding systems, so as to avoid the reaction in the feeding system in advance, the maximum height of the upward movement of the piston disc 5 is controlled by lifting the limiting baffle 14 driven by the linear stepping motor 13, and the effective volume of the middle tank 1 below the piston disc 5 is limited; the three-way exhaust valve 12 is closed for exhaust, the raw materials are fed into the middle tank 1 through the feeding pipe 2 by means of the booster equipment, the raw materials push the piston disc 5 to move upward until the counterweight pressing plate 6 is in contact with the limiting baffle, and the raw materials are accurately and quantitatively stored in the middle tank 1; the three-way exhaust valve 12 is opened for exhaust, the raw materials can be slowly fed into the reaction kettle through the discharging pipe 3 under the action of atmospheric pressure, the pressure of the counterweight pressing plate and the piston disc 5 and the gravity of the liquid raw materials, or the three-way exhaust valve 12 can be closed for exhaust, the air is pumped into the middle tank 1 through the air pump 11, and the raw materials are quickly fed into the reaction kettle through the action of air pressure; the feeding amount can be accurately controlled without being affected by the liquid level and liquid pressure in the raw material tank.

[0029] It should be noted that in this text, terms such as "including", "containing" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0030] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A quantitative dosing system for liquid raw materials in the production of composite water purification agents, characterized in that: The intermediate tank (1) is connected to a feed pipe (2) and a discharge pipe (3) at its bottom. Check valves (4) are installed on both the feed pipe (2) and the discharge pipe (3). A horizontally arranged piston disc (5) is slidably connected inside the intermediate tank (1). A counterweight plate (6) is fixed on the top of the piston disc (5). A fixing frame (7) is fixedly connected at the open position on the top of the intermediate tank (1). A connecting pipe (8) is installed between the fixing frame (7) and the counterweight plate (6). The counterweight plate (6) and piston plate (5) are provided with through holes (9) at the positions corresponding to the connecting pipe (8). The fixing frame (7) is fixed with a connecting pipe (10) that is connected to the connecting pipe (8). The connecting pipe (10) is connected to the air pump (11), and a three-way exhaust valve (12) is installed on the connecting pipe (10). A linear stepper motor (13) is fixedly installed on the fixed frame (7). The lead screw of the linear stepper motor (13) is vertically set and a horizontally set limit baffle (14) is fixed at the bottom.

2. The liquid raw material quantitative dosing system for producing a composite water purification agent according to claim 1, characterized in that: The bottom of the intermediate tank (1) is a cone-shaped structure with a central depression, and the bottom of the piston disc (5) protrudes downwards to match the shape of the bottom of the inner wall of the intermediate tank (1).

3. The liquid raw material quantitative dosing system for producing a composite water purification agent according to claim 1, characterized in that: The discharge pipe (3) is located at the bottom center of the intermediate tank (1), and the feed end of the feed pipe (2) is bent upward and extends to at least two-thirds of the height of the intermediate tank (1).

4. The liquid raw material quantitative dosing system for producing a composite water purification agent according to claim 1, characterized in that: The connecting pipe (8) is a foldable telescopic pipe, and both the connecting pipe (8) and the connecting pipe (10) are pressure-resistant pipes.

5. The liquid raw material quantitative dosing system for producing a composite water purification agent according to claim 1, characterized in that: The three-way exhaust valve (12) is a solenoid valve.

6. The liquid raw material quantitative dosing system for producing a composite water purification agent according to claim 1, characterized in that: The check valves (4) on the feed pipe (2) and the discharge pipe (3) are both installed at one end near the intermediate tank (1).

Images