CN215487935U

CN215487935U - Gas pressure reducing valve for kiln

Info

Publication number: CN215487935U
Application number: CN202121285418.3U
Authority: CN
Inventors: 王雨田
Original assignee: Wuxi Essenbor Technology Co ltd
Current assignee: Wuxi Essenbor Technology Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2022-01-11
Anticipated expiration: 2031-06-09

Abstract

The utility model discloses a gas pressure reducing valve for a kiln, which belongs to the technical field of kiln equipment, and comprises a valve body and a valve cover in threaded connection with the upper end of the valve body, wherein an air inlet pipe and an air outlet pipe are symmetrically arranged on the side surface of the valve body, the upper end of the valve cover is in threaded connection with a screw rod, a handle is arranged at the upper end of the screw rod, a spring is arranged at the lower end of the screw rod, a piston is connected with the lower end of the spring, the spring is driven to compress by rotating the handle, the piston is further driven to move up and down, the air pressure of the air outlet end is adjusted, a pressure gauge is arranged on the air outlet pipe, the pressure of the air outlet end can be displayed, an emergency valve closing mechanism is arranged in the air inlet pipe, the circulation of gas is blocked by pressing a button, the gas can be quickly cut off in emergency, the safety of the device is improved, and the device is easy to popularize.

Description

Gas pressure reducing valve for kiln

Technical Field

The utility model belongs to the technical field of kiln equipment, and particularly relates to a gas pressure reducing valve for a kiln.

Background

In order to ensure the combustion stability of the combustion device for the kiln, a gas pressure reducing valve is required to be installed to reduce the pressure of gas conveyed into the combustion device, the common gas pressure reducing valve consists of a valve body, a valve cover, a diaphragm, a piston, a spring, a bolt and a handle, the diaphragm and the piston are driven to move downwards by rotating the handle to adjust the pressure of a gas outlet end, if the gas of a gas pipeline leaks to cause fire, the pressure reducing valve needs to be immediately closed to cut off the gas, the gas can be closed by rotating the handle to close the pressure reducing valve, the consumed time is too long, and the safety is low.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: aiming at the technical problems in the related art, the utility model provides a gas pressure reducing valve for a kiln, which aims to solve the problems in the prior art.

The technical scheme is as follows: the valve comprises a valve body and a valve cover which is in threaded connection with the upper end of the valve body, the upper end of the valve cover is in threaded connection with a bolt, the upper surface of the bolt is provided with a handle, the outer surface of the handle is provided with friction grains, the lower surface of a pressing plate is fixedly connected with the lower surface of the pressing plate, the lower surface of the pressing plate is fixedly connected with the upper surface of a pressure spring, the pressure spring is arranged at the upper end of a connecting block, the outer surface of the connecting block is in interference connection with the inside of a through hole of a diaphragm, the outer surface of the diaphragm is embedded in the inner surface of the valve cover, the lower surface of the connecting block is provided with a piston, the lower end of the valve cover is provided with a limiting plate with a through hole, the middle part of the piston is positioned in the through hole of the limiting plate, the side surface of the valve body is symmetrically provided with an air inlet pipe and an air outlet pipe, the inner cavity of the valve body is divided into an air inlet cavity and an air outlet cavity by a partition plate arranged on the inner wall of the valve body, the center of the partition plate is provided with a through hole following type with the end part of the piston, and an emergency valve closing mechanism is arranged on one side of the air inlet pipe.

In the technical scheme, the emergency valve closing mechanism can cut off gas immediately in emergency, and the defect that time is wasted due to the fact that a handle needs to be rotated for a plurality of circles in emergency in the prior art is overcome.

In a further embodiment, the emergency valve closing mechanism comprises an electromagnet embedded on the outer wall of the air inlet pipe, and a first fixing seat and a second fixing seat fixed on the inner wall of the air inlet pipe, wherein a rotating member is hinged on the first fixing seat, one side of the rotating member, which is close to the electromagnet, is fixedly connected with an armature, the other side of the end part of the rotating member is fixedly connected with one end of a return spring, the other end of the return spring is fixedly connected with the second fixing seat, a button is arranged on the electromagnet, the button is pressed to cut off the power supply in an emergency, the electromagnet loses magnetism, and the return spring pulls the rotating member to close the air inlet to cut off the gas, so that the time for closing the valve is saved, and the safety is improved.

In a further embodiment, the end surface of the rotating part is provided with a circular arc-shaped protrusion, and the end surface of the second fixed seat is provided with a groove engaged with the protrusion of the rotating part, so that the rotating part can be closed to ensure air tightness, and gas leakage is prevented.

In a further embodiment, a connecting pipe is arranged on the side surface of the air outlet pipe and communicated with the air outlet pipe, and an air outlet of the air outlet pipe is in threaded connection with a pressure gauge, so that the pressure indication of the air outlet end can be visually displayed, and the pressure can be conveniently adjusted by a pressure valve.

In a further embodiment, the armature is located at the end of the free end of the rotating part, the air inlet pipe is made of a plastic material and does not have ferromagnetism, the armature is located at the farthest end, away from the hinge, of the rotating part to provide the largest torque, the plastic material of the air inlet pipe does not have ferromagnetism, weakening of the magnetic force between the electromagnet and the armature is avoided, and stability of the rotating part fixed on the pipe wall when the electromagnetic valve is electrified is guaranteed.

In a further embodiment, after the electromagnet cuts off the power supply magnetism and disappears, the return spring pulls the rotating piece to rotate anticlockwise, and the gas pressure at the gas inlet end acts on the rotating piece to accelerate the anticlockwise rotation of the rotating piece, so that the time for cutting off gas is further shortened.

Has the advantages that: the device's intake pipe one side is provided with urgent valve mechanism of closing, including setting up the electro-magnet on the intake pipe outer wall, and first fixing base and the second fixing base of setting on the intake pipe inner wall, articulated rotating member on the first fixing base, be provided with a reset spring between rotating member one end and the second fixing base one end, press the button on the electro-magnet, the electro-magnet loses magnetism, and the rotating member closes the intake pipe under reset spring's drive, cuts off the gas, can in time close the valve under the condition that the gas leaked the initiation conflagration, shortens the time of closing the valve, improves the security.

Drawings

Fig. 1 is a schematic view of the internal structure of the operating state of the present invention.

Fig. 2 is a schematic view of the internal structure of the closed state of the present invention.

Fig. 3 is a schematic view of the structure of the exterior of the present invention.

Fig. 4 is an enlarged view of the portion a of fig. 1 according to the present invention.

The reference signs are: the pressure measuring device comprises a valve body 1, a valve cover 2, a screw rod 3, a handle 4, an air inlet pipe 5, an air outlet pipe 6, a pressure measuring instrument 7, an electromagnet 8, a button 9, a first fixing seat 10, a second fixing seat 11, an armature 12, a rotating part 13, a return spring 14, a pressure plate 15, a pressure spring 16, a rubber sealing ring 17, a connecting block 18, a diaphragm 19, a piston 20, a limiting plate 21, a partition plate 22 and a connecting pipe 23.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the utility model.

As shown in fig. 1 to 4, a gas pressure reducing valve for a kiln, hereinafter referred to as "the device", includes a valve body 1 and a valve cover 2, the valve body 1 and the valve cover 2 are in threaded fit, a rubber seal ring 17 is fixedly arranged at a joint of the valve cover 2 and the valve body 1, a limiting plate 21 with a through hole at the center is arranged at the bottom of the valve cover 2, a diaphragm 19 is embedded in the inner wall of the valve cover 2, the center of the diaphragm 19 is provided with a through hole, the inside of the through hole of the diaphragm 19 is in interference fit with a connecting block 18, the upper surface of the connecting block 18 is fixedly connected with the lower end of a pressure spring 16, the upper end of the pressure spring 16 is fixedly connected with the lower surface of a pressure plate 15, the upper surface of the pressure plate 15 is fixedly connected with the lower surface of a bolt, the bolt is in threaded fit with the upper end of the valve cover 2, the upper end of the bolt is fixedly connected with a handle 4, the outer surface of the handle 4 is provided with friction grains, a partition plate 22 is arranged on the inner wall of the valve body 1, the baffle 22 divide into the chamber of valve body 1 into chamber and the chamber of giving vent to anger to admit air, the center of baffle 22 sets up the through-hole, the lower fixed surface of connecting block 18 connects piston 20, piston 20's middle part and limiting plate 21's through-hole sliding fit, the head of piston 20 agrees with the shape of baffle 22 centre bore, valve body 1 side surface symmetry is provided with intake pipe 5 and outlet duct 6, the side surface of outlet duct 6 is provided with connecting pipe 23, the tip of connecting pipe 23 is provided with manometer 7, the end of giving vent to anger of outlet duct 6 and the inlet end of intake pipe 5 are provided with the internal thread, fixed scarf joint electro-magnet 8 on the outer wall of intake pipe 5, be provided with button 9 on the electro-magnet 8, be provided with first fixing base 10 and second fixing base 11 on the inner wall of intake pipe 5, first fixing base 10 terminal surface articulates swivel 13, one side fixed connection armature 12 of swivel 13, the other side is fixedly connected with one end of a return spring 14, the other end of the return spring 14 is fixedly connected to the second fixing seat 11, the end part of the rotating piece 13 is provided with an arc-shaped bulge, and the second fixing seat 11 is provided with an arc-shaped groove.

As a preferred scheme, the air inlet pipe 5 of the device is provided with an emergency valve closing mechanism, and in the case of fire caused by gas leakage, the button 9 can be pressed to power off the electromagnetic valve, and the return spring 14 drives the rotating piece 13 to close the air inlet pipe 5, so that gas is cut off, the time for closing the pressure reducing valve is shortened, and the safety effect is improved.

As a preferred scheme, the air outlet pipe 6 of the device is provided with a pressure gauge 7, the pressure at the air outlet end can be detected in real time and is visually displayed on a dial plate of the pressure gauge 7, and the pressure reducing valve can be conveniently calibrated and adjusted.

The working principle is as follows: the air inlet pipe 5 and the air outlet pipe 6 are connected and communicated with a gas pipeline of a kiln through threads, under the normal condition, the electromagnet 8 is electrified to attract an armature 12 on the rotating piece 13 to be attached to the inner wall of the air inlet pipe 5, the air inlet pipe 5 is opened, the pressure at the air outlet end is displayed on a dial plate of the pressure gauge 7, the screw rod 3 rotates by contrasting the number indicating rotating handle 4 of the pressure gauge 7 to drive the pressing plate 15 to move downwards, the pressure spring 16 compresses to improve the elastic force, the diaphragm 19 and the piston 20 are driven to move downwards, the distance between the piston 20 and the inner hole of the partition plate 22 is shortened, the area of a through hole is reduced, the gas flow is reduced, the pressure is reduced to achieve the effect of pressure reduction, if the gas pipeline leaks to cause fire, the electromagnet 8 of the pressing button 9 is powered off and loses magnetism, the tension of the reset spring 14 drives the rotating piece 13 to rotate, the bulge at the end part of the rotating piece 13 is matched with the groove of the second fixing seat 11, can cut off the gas instantly and organize the further expansion of fire.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the utility model. The utility model is not described in detail in order to avoid unnecessary repetition.

Claims

1. A gas relief pressure valve for kiln, its characterized in that: the valve comprises a valve body and a valve cover which is in threaded connection with the upper end of the valve body, the upper end of the valve cover is in threaded connection with a bolt, the upper surface of the bolt is provided with a handle, the outer surface of the handle is provided with friction grains, the lower surface of a pressing plate is fixedly connected with the lower surface of the pressing plate, the lower surface of the pressing plate is fixedly connected with the upper surface of a pressure spring, the pressure spring is arranged at the upper end of a connecting block, the outer surface of the connecting block is in interference connection with the inside of a through hole of a diaphragm, the outer surface of the diaphragm is embedded in the inner surface of the valve cover, the lower surface of the connecting block is provided with a piston, the lower end of the valve cover is provided with a limiting plate with a through hole, the middle part of the piston is positioned in the through hole of the limiting plate, the side surface of the valve body is symmetrically provided with an air inlet pipe and an air outlet pipe, the inner cavity of the valve body is divided into an air inlet cavity and an air outlet cavity by a partition plate arranged on the inner wall of the valve body, the center of the partition plate is provided with a through hole following type with the end part of the piston, and an emergency valve closing mechanism is arranged on one side of the air inlet pipe.

2. A gas pressure reducing valve for kilns, as claimed in claim 1, wherein: the emergency valve closing mechanism comprises an electromagnet embedded on the outer wall of an air inlet pipe, and is fixed on a first fixing seat and a second fixing seat on the inner wall of the air inlet pipe, a rotary part is hinged to the first fixing seat, one side of the rotary part, close to the electromagnet, is fixedly connected with an armature, the other side of the end part of the rotary part is fixedly connected to one end of a reset spring, the other end of the reset spring is fixedly connected to the second fixing seat, and a button is arranged on the electromagnet.

3. A gas pressure reducing valve for kilns, as claimed in claim 2, wherein: the terminal surface of rotating member is provided with convex arch, the terminal surface of second fixing base is provided with the recess with the protruding meshing of rotating member.

4. A gas pressure reducing valve for kilns, as claimed in claim 1, wherein: and a connecting pipe is arranged on the side surface of the air outlet pipe and communicated with the air outlet pipe, and a pressure gauge is connected to the air outlet of the air outlet pipe in a threaded manner.

5. A gas pressure reducing valve for kilns, as claimed in claim 2, wherein: the armature is arranged at the end part of the free end of the rotating piece, and the air inlet pipe is made of a plastic material and does not have ferromagnetism.

6. A gas pressure reducing valve for kilns, as claimed in claim 2, wherein: after the electromagnet cuts off the power supply and the magnetism disappears, the reset spring pulls the rotating piece to rotate anticlockwise, and the gas pressure at the gas inlet end acts on the rotating piece to accelerate the anticlockwise rotation speed of the rotating piece.