Proportional valve

Abstract

The utility model discloses a proportional valve which comprises a collecting cavity, the collecting cavity is connected with a plurality of feeding pipes, the feeding pipes are provided with electromagnetic valves used for controlling the mixing proportion of materials and control panels used for controlling the electromagnetic valves, and the proportional valve further comprises a mixing cavity which is connected with the collecting cavity and used for evenly mixing the collected materials. A material channel of the mixing cavity is filled with material mixing balls for uniformly mixing the materials through extrusion or closure, and the materials in the collecting cavity flow through the mixing cavity and are extruded with the material mixing balls, so that the materials are more uniformly mixed; a plurality of groups of auxiliary mixing cavities are also arranged, so that the mixing cavities or the shapes of the mixing cavities are changed, the contact area between the materials and the mixing balls is increased as much as possible in a limited space, and the mixing uniformity is improved; by setting the particle size and the particle size distribution of the mixing balls, the mixing uniformity is improved on the premise of not influencing the liquidity of the proportional valve; the device is simple in structure, high in flexibility and wide in application scene.

Description

Technical Field

[0001] This utility model relates to a precision control device, and more particularly to a proportional valve with a mixing function. Background Technology

[0002] Proportional valves, as precision control devices, can adjust their output based on the proportional relationship of input electrical signals (such as current and voltage), precisely controlling the mixing ratio of the desired solution. Their precise adjustment capabilities and flexibility make them widely used in automation, medical, energy, environmental protection, aerospace, robotics control, and hydraulic systems. Existing proportional valves have multiple channels, precisely conveying the required proportions of materials to one channel for mixing. However, different applications involve materials with varying properties. Especially for materials with coarse particle sizes, high viscosity, or poor compatibility, once the materials converge in one channel, uniform mixing is impossible without additional force. An unevenly mixed system entering subsequent processes can negatively impact equipment operation and product quality. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to solve the problem of uneven mixing of materials after passing through a proportional valve, and to provide a proportional valve with mixing function.

[0004] Technical solution: The proportional valve of this utility model includes a collection chamber, which is connected to multiple feed pipes. The feed pipes are equipped with a solenoid valve for controlling the mixing ratio of materials and a control panel for controlling the solenoid valve. It also includes a mixing chamber connected to the collection chamber to mix the collected materials evenly. The material channel of the mixing chamber is filled with mixing balls that mix the materials evenly by squeezing or intercepting.

[0005] Furthermore, the front and rear ends of the material channel in the mixing chamber are provided with sieve plates and sealing rings to prevent leakage of the mixing balls, thereby increasing the sealing performance of the connection.

[0006] Furthermore, the mixing balls are ceramic balls, rubber balls, or glass balls, with a particle size of 1-3 mm. The material and particle size of the mixing balls can be selected according to the applicable scenario to minimize the introduction of impurities or damage to the material during mixing. The particle size of the mixing balls directly affects the uniformity of mixing; smaller particle sizes should be selected while meeting flow rate requirements. The particle size of the mixing balls in the mixing chamber can be set to be uniform, or it can be set to a step-like variation in particle size, gradually decreasing from the inlet to the outlet. For materials with uneven particle size or high viscosity, the flow resistance is high in the initial stage of mixing, so larger mixing balls are used for initial mixing. As mixing progresses, the resistance to material flow further decreases, and the particle size of the mixing balls gradually decreases to improve the uniformity of mixing and the smoothness of the proportional valve flow.

[0007] Furthermore, the mixing chamber is configured as a straight line or a serpentine shape, and the front and rear ends of the mixing chamber are equipped with sieve plates to prevent leakage of the mixing balls, thereby increasing the contact area between the material and the mixing balls within a limited space and improving the uniformity of mixing.

[0008] Furthermore, it also includes auxiliary mixing chambers to increase the contact area between the mixed materials and the mixing balls; the auxiliary mixing chambers are filled with mixing balls, and multiple sets of auxiliary mixing chambers are provided, which can be configured in a straight line, U-shape, or S-shape. Screen plates are installed at the ports of the auxiliary mixing chambers to prevent leakage of the mixing balls. The auxiliary mixing chambers are connected in series with the mixing chambers via connectors. The area through which the material flows through the mixing chambers can be flexibly selected according to the material flow rate, material shape, and mixing requirements, thereby effectively improving the uniformity of material mixing.

[0009] Beneficial effects: Compared with the prior art, this utility model has the following advantages: 1. By setting a mixing chamber filled with mixing balls, the material flow in the collection chamber is squeezed by the mixing balls, making the material more uniformly mixed; 2. By using multiple sets of auxiliary mixing chambers and changing the shape of the mixing chamber, the contact area between the material and the mixing balls can be increased as much as possible in a limited space, thus improving the uniformity of mixing; 3. By setting the particle size and particle size distribution of the mixing balls, the uniformity of mixing can be improved without affecting the flowability of the proportional valve; 4. The device has a simple structure, high flexibility, and wide applicability. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is an exploded view of Embodiment 3 of this utility model. Detailed Implementation

[0012] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0013] Example 1

[0014] like Figure 1 The proportional valve shown includes a collecting chamber 1 connected to four feed pipes. Each feed pipe is equipped with a solenoid valve 2 for controlling the material mixing ratio and a control panel 3 for controlling the solenoid valves. The number of feed pipes and solenoid valves can be adjusted according to process requirements. A mixing chamber 4 is connected to the collecting chamber 1. The material channel 6 of the mixing chamber 4 is a straight pipe filled with mixing balls. Screen plates 5 are installed at the front and rear ends of the mixing chamber 4 to prevent leakage of the mixing balls. A first sealing ring 7 is installed between the collecting chamber 1 and the mixing chamber 4 to prevent material leakage. The mixing balls can be made of ceramic, rubber, or glass, and their material and particle size can be selected according to the required performance of the mixed materials and the requirements for mixing uniformity. The particle size of the mixing balls in the mixing chamber 4 can be set to be uniform or a stepped particle size that gradually decreases from the feed inlet to the discharge outlet, improving the mixing uniformity without affecting the flowability of the proportional valve.

[0015] Example 2

[0016] Unlike Example 1, the material channel 6 of the mixing chamber 4 can be configured as a serpentine pipe to increase the contact area between the mixture and the mixing balls and improve the uniformity of the mixture.

[0017] Example 3

[0018] like Figure 2 The proportional valve shown differs from Embodiment 1 in that it also includes two auxiliary mixing chambers 9 parallel to the mixing chamber 4. Each auxiliary mixing chamber 9 is a U-shaped pipe filled with mixing balls. A sieve plate 5 is installed at the port of each auxiliary mixing chamber to prevent leakage of the mixing balls. Multiple auxiliary mixing chambers can also be configured according to mixing requirements. The two ports of the U-shaped auxiliary mixing chamber 9 are on the same side as the outlet of the material channel 6 of the mixing chamber 4, and the bend of the U-shape is on the same side as the inlet of the material channel 6 of the mixing chamber 4. A second sealing ring 8 is installed between the bend of the U-shape and the collecting chamber 1 to ensure sealing during material flow. When the material flow rate is high, the material particles are coarse, the material viscosity is high, or the requirement for high mixing uniformity is high, one or more sets of auxiliary mixing chambers 9 can be connected in series with the material channel 6 of the mixing chamber 4 via pipe connectors to increase the contact area between the mixture and the mixing balls and improve the mixing uniformity.

[0019] Example 4

[0020] Unlike Example 3, the auxiliary mixing chamber 9 can be configured as a serpentine pipe to further increase the contact area between the mixture and the mixing balls and improve the uniformity of the mixture.

[0021] In use, the solenoid valve 2 is controlled via the control panel 3 to open / close or control the flow rate. Materials from each feed pipe are mixed in precise proportions within the collecting chamber 1 and then flow into the material channel 6 of the mixing chamber 4. The built-in mixing balls compress the materials, ensuring thorough mixing of the multi-component materials before they are fed into the next process. The proportional valve not only precisely controls the proportions of each component but also ensures uniform mixing, guaranteeing the production efficiency of subsequent processes.

Claims

1. A proportional valve, comprising a collecting chamber (1) connected to a plurality of feed pipes, wherein a solenoid valve (2) for controlling the mixing ratio of materials and a control panel (3) for controlling the solenoid valve are provided on the feed pipes, characterized in that, It also includes a mixing chamber (4) connected to the collection chamber (1) to mix the collected materials evenly. The material channel (6) of the mixing chamber (4) is filled with mixing balls that mix the materials evenly by squeezing or intercepting.

2. The proportional valve according to claim 1, characterized in that, The mixing chamber (4) is provided with a screen plate (5) and a first sealing ring (7) at the front and rear ends of the material channel to prevent the mixing balls from leaking.

3. The proportional valve according to claim 1, characterized in that, The mixing balls are ceramic balls, rubber balls, or glass balls.

4. The proportional valve according to claim 3, characterized in that, The particle size of the mixing balls is 1-3 mm.

5. The proportional valve according to claim 1, characterized in that, The material channel (6) of the mixing chamber (4) is configured as a straight line or a serpentine shape.

6. The proportional valve according to claim 1, characterized in that, It also includes an auxiliary mixing chamber (9) that increases the contact area between the mixture and the mixing balls; the auxiliary mixing chamber (9) is filled with mixing balls.

7. The proportional valve according to claim 6, characterized in that, The auxiliary mixing chamber (9) is provided in multiple sets, and the auxiliary mixing chamber (9) is configured as a straight line, a U-shape or a serpentine shape.

8. The proportional valve according to claim 6, characterized in that, The auxiliary mixing chamber (9) is equipped with a sieve plate (5) to prevent leakage of the mixing balls; the auxiliary mixing chamber (9) is connected in series with the mixing chamber (4) through a connector.

Images