Water reducing agent quantitative adding device with sealing effect

Abstract

The utility model discloses water reducing agent quantitative adding device with sealing effect belongs to water reducing agent adding device technical field. Water reducing agent quantitative adding device with sealing effect, the sealed storage bin, screw conveyor and quantitative adding assembly, the sealed storage bin upper end is equipped with nitrogen inlet, and the lower end of sealed storage bin is connected with the screw conveyor of inclined setting, quantitative adding assembly includes seal plate, movable plate and quantitative hopper. Water reducing agent quantitative adding device with sealing effect, the nitrogen protection of storage bin, the closed connection of combination screw conveyor and quantitative hopper, completely isolate moisture and dust, and the dynamic sealing of conical plugging block is used to the discharge port, avoids the material leakage when stopping, and the displacement of movable plate is triggered through the weight of quantitative hopper, and the precise quantitative is realized using the elastic threshold of support spring, and it can adapt to different adding amount demand by replacing different stiffness spring without relying on electronic sensor.

Description

Technical Field

[0001] This utility model relates to the field of water-reducing agent addition device and technology, and more specifically, to a water-reducing agent quantitative addition device with sealing effect. Background Technology

[0002] Water-reducing agents are key admixtures in concrete production, and their dosage directly affects the fluidity, strength, and durability of concrete. Traditional water-reducing agent addition devices often use open storage silos combined with screw conveyors or gravity feeding methods, which have the following problems: water-reducing agents are prone to absorbing moisture and clumping, especially in humid environments, leading to inaccurate metering or even blockage of conveying pipelines; the feeding rate relies on the speed of the screw conveyor to control the feed rate, which is easily affected by changes in material fluidity, resulting in large errors; open feeding methods easily generate dust, which is harmful to worker health and does not meet environmental protection requirements. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and to provide a water-reducing agent quantitative addition device with a sealing effect to solve the above-mentioned shortcomings.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] This utility model discloses a water-reducing agent quantitative addition device with a sealing effect, comprising a sealed storage silo, a screw conveyor, and a quantitative addition component. The upper end of the sealed storage silo is provided with a nitrogen inlet, and the lower end of the sealed storage silo is connected to an inclined screw conveyor. The quantitative addition component includes a sealing plate, a movable plate, and a quantitative hopper. A guide rod is provided on one side of the sealing plate, and the guide rod is sleeved with the movable plate. The movable plate is linked to the quantitative hopper through a pull rope.

[0006] Preferably, the screw conveyor is provided with a screw feeding rod, one end of which is provided with a limit plate, the end of the screw conveyor is connected to a drive motor through a gearbox, and the side wall of the screw conveyor is provided with a discharge port.

[0007] Preferably, a support spring is sleeved on the guide rod, and the two ends of the support spring abut against the limiting plate and the movable plate, respectively.

[0008] Preferably, the sealing plate is bolted to the screw conveyor, and a sealing gasket is provided at the connection point to facilitate disassembly and replacement of the support spring.

[0009] Preferably, the quantitative hopper is equipped with a conical sealing block, which dynamically opens and closes the discharge port, and the support spring controls the displacement of the movable plate to achieve quantitative feeding.

[0010] Preferably, the bottom of the quantitative hopper is equipped with a motor-driven tilting plate for timed unloading.

[0011] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0012] This utility model discloses a water-reducing agent quantitative addition device with a sealing effect. The storage silo is protected by nitrogen gas, and the screw conveyor and quantitative hopper are connected in a sealed manner to completely isolate moisture and dust. The discharge port is dynamically sealed with a conical sealing block to prevent material leakage when the machine stops. The displacement of the movable plate is triggered by the weight of the quantitative hopper, and the elasticity threshold of the support spring is used to achieve accurate quantitative addition. It does not rely on electronic sensors. Different stiffness springs can be replaced to adapt to different addition requirements. It is easy to adjust, adopts pure mechanical linkage, has a low failure rate, is suitable for harsh dust environments, and provides a fully sealed conveying process to prevent dust from escaping. The inclined screw conveyor and conical sealing block ensure that there is no material residue. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of the water-reducing agent quantitative addition device with sealing effect according to this utility model;

[0014] Figure 2 This is a diagram showing the internal structure of the water-reducing agent quantitative addition device with sealing effect according to this utility model.

[0015] Figure 3 This is a diagram showing the sealed state of the movable plate of this utility model;

[0016] Figure 4 This is an exploded view of the spiral feeder and quantitative addition component of this utility model.

[0017] In the diagram: 1. Sealed storage silo; 11. Nitrogen inlet; 2. Screw conveyor; 21. Gearbox; 22. Drive motor; 23. Screw feed rod; 231. Limiting plate; 24. Discharge port; 3. Quantitative addition component; 31. Sealing plate; 311. Guide rod; 312. Support spring; 32. Movable plate; 321. Pull rope; 33. Quantitative hopper; 331. Conical sealing block; 332. Tilting plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0020] Combination Figures 1-4The present invention discloses a water-reducing agent quantitative addition device with a sealing effect, comprising a sealed storage silo 1, a screw conveyor 2 at the lower end of the sealed storage silo 1, and a nitrogen inlet 11 at the upper end of the sealed storage silo 1 for filling with nitrogen to prevent the water-reducing agent from regaining moisture and to avoid low pressure inside the sealed storage silo 1 when conveying the water-reducing agent. A quantitative addition component 3 is provided at the output end of the screw conveyor 2. The sealed storage silo 1 delivers the water-reducing agent to the feeding position point through the screw conveyor 2, and then the quantitative addition component 3 measures a fixed weight of water-reducing agent for addition.

[0021] Specifically, the screw conveyor 2 is inclined and its lower end is sealed to the sealed storage bin 1. A gearbox 21 is provided at one end of the screw conveyor 2, and a drive motor 22 is provided outside the gearbox 21. The drive motor 22 controls the operation of the gearbox 21. A screw feeding rod 23 is provided inside the screw conveyor 2. One end of the screw feeding rod 23 is connected to the gearbox 21 and rotates under the operation of the gearbox 21. The gearbox 21 includes at least two meshing bevel gears, one of which is fixedly connected to one end of the screw feeding rod 23, and the other bevel gear is connected to the output end of the drive motor 22. A discharge port 24 is provided on the screw conveyor 2.

[0022] More specifically, the quantitative addition component 3 includes a sealing plate 31, a movable plate 32, and a quantitative hopper 33. A guide rod 311 is provided on the side of the sealing plate 31 near the inside of the screw conveyor 2. The movable plate 32 is sleeved on the guide rod 311. A pull rope 321 is fixedly connected to the side of the movable plate 32 near the screw feed rod 23. The pull rope 321 passes through the discharge port 24, and the lower end of the pull rope 321 is fixedly connected to the quantitative hopper 33. The quantitative hopper 33 is sleeved with the discharge port 24.

[0023] It should be noted that a limiting plate 231 is provided at the other end of the spiral feed rod 23. The limiting plate 231 has an insertion hole that is inserted into the guide rod 311. In addition, a support spring 312 is sleeved on the guide rod 311. The two ends of the support spring 312 abut against the limiting plate 231 and the movable plate 32, respectively. Under the action of the support spring 312, the movable plate 32 is pulled apart from the limiting plate 231 by a certain distance. The limiting plate 231 and the movable plate 32 are located on both sides of the discharge port 24.

[0024] Furthermore, a conical sealing block 331 is installed inside the quantitative hopper 33 via a bracket. The upper end of the conical sealing block 331 is fixedly connected to the lower end of the pull rope 321. The position of the quantitative hopper 33 is controlled by the pull rope 321, and under the action of the movable plate 32, the conical sealing block 331 is driven to block the discharge port 24. Figure 2As shown, when no material is being discharged, the discharge port 24 is sealed. When the screw conveyor 2 discharges material, it is conveyed by the screw feed rod 23. The water-reducing agent falls onto the conical sealing block 331 through the discharge port 24. As more and more water-reducing agent accumulates on the conical sealing block 331, the weight of the metering hopper 33 increases. The metering hopper 33 pulls the movable plate 32 down, and the conical sealing block 331 no longer blocks the discharge port 24. The movable plate 32 slides along the guide rod 311, and the weight of the water-reducing agent in the metering hopper 33 continues to increase until the movable plate 32 moves to the other side of the discharge port 24 and approaches the limit plate 231, blocking the discharge port 24 inside the screw conveyor 2. By designing the support spring 312, it is ensured that after the metering hopper 33 is loaded to the set weight, the movable plate 32 just blocks the screw conveyor 2.

[0025] In order to enable the quantitative hopper 33 to load different quantitative requirements, the sealing plate 31 is fixed to one end of the screw conveyor 2 by bolts, and a sealing gasket is provided at the connection between the sealing plate 31 and the screw conveyor 2. The support spring 312 can be replaced by disassembling the sealing plate 31.

[0026] In addition, the water-reducing agent entering the metering hopper 33 is fed through the tilting plate 332 set below the metering hopper 33. One end of the tilting plate 332 is connected to a motor to control the opening and closing of the metering hopper 33.

[0027] Working process: The water-reducing agent is filled through the inlet of the sealed storage silo 1, and nitrogen is introduced through the nitrogen inlet 11 to maintain a slight positive pressure inside the silo and prevent moisture absorption. In the initial state, the conical sealing block 331 closes the outlet 24 under the traction of the pull rope 321. When discharge is required, the drive motor 22 drives the screw feed rod 23 to rotate through the gearbox 21, pushing the water-reducing agent along the inclined screw conveyor 2 to the outlet 24. The water-reducing agent accumulates on the conical sealing block 331, and the metering hopper 33... As the weight gradually increases, the movable plate 32 is pulled down after overcoming the elastic force of the support spring 312, and the discharge port 24 is fully opened, allowing the water-reducing agent to fall into the metering hopper 33. When the material in the metering hopper 33 reaches the set weight, the movable plate 32 slides along the guide rod 311 to the limit plate 231, and the discharge port 24 stops discharging. At the same time, the flip plate 332 opens to unload the material. After unloading is completed, the flip plate 332 closes, and the conical sealing block 331 re-seals the discharge port 24, entering the next addition cycle.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A water-reducing agent metering device with a sealing effect, comprising a sealed storage silo (1), a screw conveyor (2), and a metering addition component (3), characterized in that: The sealed storage silo (1) is provided with a nitrogen inlet (11) at the upper end and an inclined screw conveyor (2) is connected to the lower end of the sealed storage silo (1). The quantitative addition component (3) includes a sealing plate (31), a movable plate (32) and a quantitative hopper (33). A guide rod (311) is provided on one side of the sealing plate (31). The guide rod (311) is sleeved with the movable plate (32). The movable plate (32) is linked with the quantitative hopper (33) through a pull rope (321).

2. The water-reducing agent metering device with sealing effect according to claim 1, characterized in that: The screw conveyor (2) is equipped with a screw feeding rod (23), one end of which is provided with a limit plate (231). The end of the screw conveyor (2) is connected to a drive motor (22) through a gearbox (21). The side wall of the screw conveyor (2) is provided with a discharge port (24).

3. The water-reducing agent metering device with sealing effect according to claim 2, characterized in that: A support spring (312) is sleeved on the guide rod (311), and the two ends of the support spring (312) abut against the limiting plate (231) and the movable plate (32) respectively.

4. The water-reducing agent metering device with sealing effect according to claim 1, characterized in that: The sealing plate (31) is connected to the screw conveyor (2) by bolts, and a sealing gasket is provided at the connection.

5. The water-reducing agent metering device with sealing effect according to claim 1, characterized in that: The quantitative hopper (33) is equipped with a conical sealing block (331), which dynamically opens and closes the discharge port (24). The support spring (312) controls the displacement of the movable plate (32) to achieve quantitative feeding.

6. The water-reducing agent metering device with sealing effect according to claim 1, characterized in that: The bottom of the quantitative hopper (33) is equipped with a motor-driven tilting plate (332) for timed unloading.

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