Explosion-proof reversing valve
A reversing valve and valve body technology, which is applied in the field of reversing valves, can solve the problems of explosion-proof reversing valves such as inability to replace coils, open circuit of electromagnetic coils, burnout of fuses, etc., and achieve the effects of compact structure, convenient assembly and long service life
Active Publication Date: 2017-03-08
浙江永久科技实业有限公司
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AI Technical Summary
Problems solved by technology
The current explosion-proof reversing valve usually realizes the explosion-proof effect through the sealing type sealing, but due to the sealing structure, the explosion-proof coil uses the traditional fuse for over-current protection, which only protects once, resulting in the fuse burning out and the electromagnetic coil breaking.
The coil needs to be replaced after the fuse burns out, and the encapsulated explosion-proof reversing valve cannot replace the coil, so its service life is short
Method used
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Embodiment Construction
[0024] Specific embodiments of the present invention such as Figure 1-9 Shown is an explosion-proof reversing valve 1, which includes a solenoid pilot valve 2 and a reversing valve 1. The solenoid pilot valve 2 includes a power junction box 21 and an electromagnetic assembly 22. The electromagnetic assembly 22 includes a static armature 221, an electromagnetic coil 222 and a moving armature 223. A return spring 224 is sleeved on the movable armature 223. The reversing valve 1 includes a valve body 11 and a valve core assembly 12. The valve body 11 is provided with a fluid channel 111. The fluid channel 111 is provided with five reversing channels, which are respectively The first, second, third, fourth, and fifth reversing channels B1, B2, B3, B4, and B5 are also provided on the valve body 11 so that the valve body 11 is between the two-position three-way and the two-position five-way There is a conversion plate 3 for switching between, the conversion flow channel is provided...
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The invention discloses an anti-explosion reversing valve. The reversing valve comprises an electromagnetic pilot operated valve and a reversing valve body. The electromagnetic pilot operated valve comprises a power supply junction box and an electromagnetic component. The reversing valve body comprises a valve body and a valve core component. A fluid channel and a reversing channel are formed in the valve body. A transfer plate and a valve seat are further arranged on the valve body. The electromagnetic pilot operated valve comprises an anti-explosion casing which comprises an upper casing, a lower casing and left and right side plates. The electromagnetic component is arranged in a mounting cavity defined by the upper and lower casings and the left and right side plates. The upper casing, the right side plate and the lower casing are fixed through fastening bolts. Upper and lower side plates are arranged at the upper and lower ends of the left side plate respectively. Bearing step faces are arranged at free ends of the upper and lower side plates, extension plates abutting against the bearing step faces are arranged at the ends of the upper and lower casings facing towards the left side plate, the extension plates of the upper and lower casings are connected with the bearing step faces of the upper and lower side plates through fastening screws, and the power supply junction box is arranged in an accommodation cavity defined by the left side plate, the upper and lower side plates and the upper and lower extension plates. The reversing valve is good in anti-explosion effect, long in service life and convenient to assemble.
Description
technical field [0001] The invention belongs to the technical field of reversing valves, in particular to an explosion-proof reversing valve. Background technique [0002] The explosion-proof reversing valve in the prior art includes a reversing valve and an electromagnetic pilot valve. The reversing valve includes a valve body. The valve body is provided with a main valve core and a valve stem. When energized, the solenoid pilot valve relies on the electromagnetic force to lift the valve stem, and the pilot valve port opens. At this time, the upper chamber of the solenoid valve relieves pressure through the pilot hole, forming an upper and lower pressure difference around the main valve core. Under the action of the pressure difference, The fluid pressure pushes the main valve core to move upward to open the main valve port; when the power is off, under the action of the spring force and the gravity of the main valve core, the valve stem resets, the pressure in the upper ch...
Claims
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IPC IPC(8): F16K31/06F16K27/04
CPCF16K3/314F16K27/041F16K27/048F16K31/0603F16K31/0675F16K31/426
Inventor 孙丽丽温章温邦彦
Owner 浙江永久科技实业有限公司