Hard-sealed butterfly valve, also called flap valve, is a regulating valve with a simple structure and can also be used for on-off control of low-pressure pipeline media. The hard seal butterfly valve mainly cuts off and throttles on the pipeline. The butterfly valve opening and closing part is a disc-shaped butterfly plate, which rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjustment. Hard-sealed butterfly valves are suitable for conveying various corrosive and non-corrosive fluid media in the pipelines of generators, gas, steam, natural gas, city gas, cold and hot air, chemical smelting projects and power generation environmental protection systems, and are used to regulate and cut off the media. Of the flow. Hard seal butterfly valves can be divided into [...]

The care of metal furniture makes the home charming as new. In our lives, the application of metal furniture is also relatively high. This article will give you an introduction to the maintenance of metal furniture in the home.

1. Chrome-plated furniture

Aluminum-plated furniture should not be placed in a humid place, otherwise it is easy to rust and even cause the coating to fall off. If yellowish-brown mesh spots appear on the chrome-plated film, wipe it often with neutral engine oil to prevent its expansion. If there is rusty area, use cotton wool or a brush to apply oil to the rusty area, and then wipe it back and forth after a while until the rust is removed. Do not use sandpaper to polish it. Chrome-plated furniture that is not usually [...]

1. Repair tools

Two multimeters (one for analog and one for digital, analog is indispensable), diagonal pliers, needle-nose pliers, soldering iron, soldering iron stand. Flux, tin wire, tin suction device, fine sandpaper, heat shrinkable sleeve, wire stripper, flat screwdriver (one for small and medium), Phillips screwdriver (one for small and medium, plus a screwdriver with rubber handle), art Knife.

Second, the working principle of the circuit

1. Process

Input (protector, micro switch) → rectifier → filter → positive and negative switch → motor → clutch

2. The normal parameters of each electronic component

(1). Power cord: measure the DC resistance value, the normal value is close to zero; common faults: open circuit or poor contact (broken).

(2) Micro switch: measure the resistance value between normally open (resistance approaches infinity) and normally closed (resistance approaches zero); common faults: [...]

Although the household faucet is small in size, it plays an important role in the home. Any family needs water every day, and it always has frequent close contact with the small household faucet. If the home faucet leaks every day or is not easy to use, it is likely that this intimate contact will become a violent beating. So when you first buy a water faucet, you must pay great attention to it, and try to buy a home faucet with excellent quality and style.

As the saying goes, three women make a play. And home decoration, for the three functions of washing, washing, and cooking, it will not work without three home faucets. With at least these three household faucets, the drama of home life can be considered.

Most consumers [...]

Cabinet hardware not to be ignored in the purchase of cabinet
When we buy a cabinet, we usually look at the style, space or color, but we often ignore the hardware of the cabinet, which has an important impact on the service life and beauty of the cabinet. Here's how to buy a cabinet.

Hinge is one of the necessary hardware parts for cabinet and door plate to connect and repeatedly open and close. Because the opening frequency of the door panel is the highest in the use process. Therefore, the quality of the hinge is particularly important. Opening and closing effect and durability, natural, smooth, silent are the basic requirements. The second is the adjustability: the adjustable range of up and down, left and right, front and back is 2mm; [...]

The following points should be considered when purchasing hardware locks
There are many kinds of hardware locks on the market. As far as locks are concerned, they are divided into seam locks, passage locks, bathroom locks, etc. according to their uses, and spherical locks, handle locks, plug-in locks, etc. according to their shapes. Such a variety of forms of classification not only has practicability, but also includes the conditions of beauty and so on, but it is not recommended in any form. The following points should be considered first when choosing locks:

1. The place used and its importance. That is to say, it is considered to be used on the street gate, hall door, room, bathroom or passageway, so as to select the product suitable for the required function.
2. [...]