Vacuum atmospheric switching valve filtration equipment accessories

NegotiableUpdate on 01/16

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Nature of the Manufacturer: Producers

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Overview

The vacuum atmospheric switching valve is mainly used for vacuum switching when draining the liquid tank. It can effectively drain the water in the tank according to the time relay setting time. The valve body is made of aluminum alloy on the outside and stainless steel 304 on the inside, and various models and sizes can be customized.

Product Details

　　Vacuum atmospheric switching valve

　　Vacuum atmospheric switching valveThe main function is to play a vacuum switching role when draining the liquid tank, effectively draining the water inside the tank according to the time relay setting time. The valve body is made of aluminum alloy on the outside and stainless steel 304 on the inside, and various models and sizes can be customized.

The main models are: DN50, DN60, DN80, DN100, DN125

Select different models based on the flange configuration and choose different cylinder sizes according to the equipment size.

1: The traditional direct discharge tank has unstable discharge characteristics. The newly improved switching valve can effectively seal the vacuum degree while ensuring sufficient gas release, which can instantly make the pressure inside the tank and the pressure outside the tank reach a certain difference.

2：

Technical field:

This utility model belongs to the technical field of switching valves used in filter machines, and more specifically relates to a switching valve with two valve functions: vacuum switching valve and atmospheric switching valve.

In the existing rubber belt filter, the vacuum balance automatic drainage device used on it requires two switching valves, one is a vacuum switching valve (see Figure 1) and one is an atmospheric switching valve (see Figure 2). The vacuum switching valve includes a cylinder Al, an upper valve plate A2, a lower valve plate A3, and a cylinder A4. A connecting flange A5 is fixed on the cylinder, and a sealing valve plate A6 is fixed on the piston rod of the cylinder; The atmospheric switching valve includes a cylinder Bi, an upper valve plate B2, a lower valve plate B3, and a cylinder B4. There are several through holes B5 on the cylinder, and a sealed valve plate B6 is fixed on the piston rod of the cylinder. When using the vacuum switching valve, the atmospheric switching valve needs to be closed. Similarly, when using the atmospheric switching valve, the vacuum switching valve also needs to be closed. However, the use of these two types of valves in the vacuum balance automatic drainage device has its shortcomings: 1. large footprint; Due to the installation of vacuum and atmospheric switching valves on the vacuum balance automatic drainage device, the installation and maintenance process is relatively laborious, and the volume is relatively large, occupying a large amount of space; 2. The cost is relatively high, and using two valves requires the use of two sets of matching electrical control components, pneumatic components, and other parts, which increases the cost of the entire device and reduces competitiveness; 3. The failure rate is relatively high. During the process of switching between two valves and two sets of devices, the probability of failure is twice that of one valve. If one of the systems has a problem, the entire device and even the entire production line will be affected, delaying the normal progress of production; 4. The cost is relatively high, and the use of two valves requires corresponding material costs, processing costs, installation and maintenance costs; This is not conducive to reducing the price of the entire device and also increases the maintenance costs for customers after use. 5. Slow response, increased production pace, and reduced production efficiency because two valves cannot work at the same time. When switching, one valve needs to return to its original position before the other valve can start working. This back and forth greatly increases the production pace time and reduces work efficiency per unit time. Moreover, the response of the two systems of the two valves to electrical signal commands is relatively slow

Utility model content

The purpose of this utility model is to provide a new type of vacuum atmospheric switching valve that addresses the shortcomings of existing technology. One valve can function as both a vacuum switching valve and an atmospheric switching valve, with small size, low price, and fast response. The technical solution of the present utility model is as follows: a new vacuum atmospheric switching valve, comprising an actuator, which is screw fixed on the upper valve plate, a cylinder is welded on the lower surface of the upper valve plate, a lower chamber connecting flange is fixed on the cylinder, and a lower valve body is welded and fixed on the lower surface of the cylinder; The upper valve plate, cylinder, and lower valve body form a sealed cavity, and the sealed valve plate and actuator located within the sealed cavity are connected. The upper valve plate is provided with several through holes. The new vacuum atmospheric switching valve has 8-12 through holes evenly distributed on the upper valve plate.

The new vacuum atmospheric switching valve described in [0012], wherein the actuator is a cylinder, and the piston rod of the cylinder is fixedly connected to the sealing valve plate. The new vacuum atmospheric switching valve has a gap between the sealing valve plate and the inner wall of the cylinder. The new vacuum atmospheric switching valve, the sealing valve plate is a circular plate with a diameter of 90mm and a thickness of 18mm. The beneficial effects of this utility model are as follows: 1. Through the structure of this utility model, the function of a vacuum and atmospheric switching valve can be achieved with one valve. After installation on the vacuum balance automatic drainage device, the footprint of the entire device is reduced. 2. Low cost, using one valve only requires one set of matching electrical control components, pneumatic components and other parts, which greatly reduces the cost of the entire device and improves competitiveness; 3. The failure rate is relatively low. Compared to two valves and two sets of devices, during the switching process, this new structure only has one valve and one set of supporting devices, and the probability of failure is half of that of two valves. This reduces the impact of the switching valve on the device and even the entire production line, and does not delay the normal operation of production; 4. Fast response and accelerated production pace increase production efficiency because during switching, there is no need to return one valve to its original position and the other valve can start working as before. Only one reciprocating stroke of the cylinder is needed to complete the action that could only be completed by two valves and two strokes in the past. This greatly reduces the time required during the reciprocating process and is correspondingly fast.