A multi-functional filtering bidirectional telescopic anti-theft gate valve

Abstract

The invention discloses a multifunctional filtration type two-way telescoping anti-theft gate valve. The multifunctional filtration type two-way telescoping anti-theft gate valve comprises a valve body, a valve deck, a rotary cover, a lower valve deck, a valve rod and locking nuts. The valve deck is arranged above the valve body, a square hole is formed in the other end of the valve rod, and a locking blind hole and a positioning blind hole are formed in the upper end face of the valve deck in a spaced mode. A rotatable functional plate is arranged between the rotary cover and the valve deck, and a locking hole which a piece of locked magnetic steel can pass through, and a positioning hole matched with a piece of movable magnetic steel are formed in the functional plate. A circular groove is formed in the side wall of the lower end of the rotary cover, and a magnetic conduction iron ring is arranged in the circular groove. A positioning groove and a hexagonal hole used for opening and closing are formed in the upper end face of the rotary cover. A fixing hole is formed in the outer side wall of the valve deck. An O-type ring is further arranged in the outer side wall of the valve deck and below the rotary cover. The valve body is located at a gate plate water flow control port, and filter screens are arranged between the valve body and a water inlet channel and between the valve body and a water outlet channel. A sliding telescopic pipe is arranged between a water inlet and a water outlet of the valve body. The multifunctional filtration type two-way telescoping anti-theft gate valve is reasonable in structural design, convenient to install and detach and low in cost, has the two-way telescoping movable connection and filtration functions and can compensate for a pipeline. The multifunctional filtration type two-way telescoping anti-theft gate valve can be used as either an anti-theft valve or an ordinary gate valve and is flexible to use and wide in application range.

Description

technical field [0001] The invention relates to a fluid control valve, in particular to a multi-functional filtering bidirectional telescopic anti-theft gate valve. Background technique [0002] Nowadays, the anti-theft gate valve has been widely used in the fields of tap water and heating. The anti-theft gate valve is generally installed at the front end of the water meter or heat meter, which can prevent theft or cut off the water supply or heat supply when the user maliciously owes money. The anti-theft gate valve currently on the market They are relatively simple and cannot meet the needs of users. When opening the anti-theft gate valve, it is necessary to use a magnetic key to open or close the valve. The use is limited. Due to the high manufacturing cost of the magnetic key, generally many magnetic lock ball valves are equipped with a magnetic key. The pipelines are generally in normal use, and there are still a small number of cases of malicious arrears. During most o...

AI Technical Summary

Problems solved by technology

[0002] Nowadays, the anti-theft gate valve has been widely used in the fields of tap water and heating. The anti-theft gate valve is generally installed at the front end of the water meter or heat meter, which can prevent theft or cut off the water supply or heat supply when the user maliciously owes money. The anti-theft gate valve currently on the market They are relatively simple and cannot meet the needs of users. When opening the anti-theft gate valve, it is necessary to use a magnetic key to open or close the valve. The use is limited. Due to the high manufacturing cost of the magnetic key, generally many magnetic lock ball valves are equipped with a magnetic key. The pipelines are generally in normal use, and there are still a small number of cases of malicious arrears. During most of the normal use of the pipeline, once the pipeline is damaged, it cannot be used as an ordinary gate valve, and the anti-theft gate valve cannot be closed in time. On the one hand, there will be waste of cold and hot water, on the other hand, it will bring troubles to maintenance and repair work. At the same time, when the existing anti-theft gate valve is working, it can only play the role of switching off the flow of water or other liquids. Impurities and dirt in the liquid have no filtering function, and a filtering device needs to be added at the initial end or the branch that requires no impurities in the medium to block the residue in the fluid, increase the joints of the pipelines, and improve the installation efficiency. and maintenance costs, causing inconvenience to construction workers

[0003] Existing filter gate valve is a kind of " filter type gate valve " that discloses Chinese patent application number as 02235907.9 on June 3, 2002, and it is provided with handle, spool, valve body and strainer, and it has filter function, and existing The filtering gate valve such as a "filtering gate valve" published on October 29, 2010 with a Chinese patent application number of 201020589099.0 includes a valve body, a gate, a liquid inlet, a liquid outlet and a filter screen, and also only has a filtering function. According to the above two existing filter gate valves, the cost of the valve is obviously increased from the structural design, and the raw materials are increased, which cannot bring good economic benefits to the user. It also needs to be installed in the specified direction. User trouble

[0004] Ordinary anti-theft gate valves only have the function of anti-theft and do not have the function of telescopic joints. When the length of the pipeline is found to be insufficient after the pipeline is installed, one needs to increase the pipeline, increase the joint of the pipeline, and increase the hidden danger of water leakage, and the other needs to be replaced. Sufficiently long pipelines will seriously waste materials and increase costs at this time; since the gate valve body is fixed-installed, the length of the valve body cannot be adjusted according to actual needs during installation and use, and the scope of use is limited. In addition, this shut-off When the gate valve is installed along the wall, the shut-off gate valve needs to be repeatedly rotated and tightened by 360 degrees, which will cause loosening of other installed pipelines and affect leakage, and is limited by the small clearance of the wall. The valve body needs to be removed before installation, replacement and maintenance The upper bonnet and opening device are extremely inconvenient to install and replace, which brings trouble and loss to production and construction personnel. At present, the existing telescopic gate valve is a kind of " A magnetic locking retractable gate valve", comprising a valve body 1, a valve cover 2, an opening and closing member 3, a valve stem 4, an opening device 5, a telescopic sleeve 6 and a pipe nut 7, and the valve cover 2 is arranged on the valve body 1 Above, the valve body 1 is provided with a water inlet 11 and a water outlet 12 along the axial part, the opening and closing member 3 is arranged between the water inlet 11 and the water outlet 12 in the valve body, and one end of the valve stem 4 passes The valve cover 5 is connected with the opening and closing member 3, the opening device 5 is arranged on the free end of the valve stem 4, the free end of the water outlet 12 of the valve body 1 is provided with a sliding limit groove 13, and the telescopic sleeve 6 It can be slidably arranged on the sliding limiting groove 13 of the water outlet 11 of the valve body 1, and the end of the telescopic sleeve 6 in contact with the sliding limiting groove 13 is provided with a limiting protrusion 61, which prevents the telescopic sleeve 6 from being separated from the valve body 1. This structural design is not reasonable enough. After the telescopic sleeve 6 is installed, it is necessary to tap the limit protrusion 61 with a special tool, so that the limit protrusion 61 can be expanded to be stuck on the sliding limit groove 13. Due to manual knocking, the strength is uneven. , uncontrollable, resulting in more telescopic sleeves being stuck and unable to slide freely, greatly increasing the scrap rate

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