CN212106941U - Dust collector lift valve - Google Patents

Abstract

The utility model relates to a lifting valve for a dust collector, which comprises a cylinder, a valve plate and a valve seat. The utility model is characterized in that a support seat is arranged in the middle of the upper surface of the valve plate, a through hole is arranged on the top surface of the support seat, and the end of a cylinder rod of the air cylinder is provided with a through hole. There is an external thread and the end of the cylinder rod passes through the through hole. The cylinder rod located above and below the through hole is respectively provided with a double nut and an elastic washer. The elastic washer is clamped between the tightening nut and the top surface of the support seat, the locking nut near the end of the cylinder rod is provided with a pin hole corresponding to the cylinder rod, and the pin hole is provided with a latch. The utility model solves the problems of high cost of use and inconvenient maintenance and operation of the existing lifting valve, so that even without lifting the cylinder, the valve rod and the cylinder can be easily disassembled to carry out maintenance and replacement of the cylinder, and more It is beneficial to carry out maintenance operations, increase the safety of operations, and reduce the purchase cost of cylinders.

Description

Dust collector lift valve

technical field

The utility model relates to a component for realizing off-line maintenance of a dust collector, in particular to a lifting valve for a dust collector.

Background technique

The lift valve is used to be installed in the upper box of the dust collector, one for each chamber. It is an important device to realize the communication between the upper box and the middle box for dust removal. When the lift valve is opened, the upper box and the middle box are connected to the clean flue. , this working state is the normal working state of the dust collector. When a certain chamber of the dust collector needs to be repaired, it is necessary to close the corresponding lift valve, and close the connection channel between the upper box and the middle box clean flue to achieve sealing and prevent the flue gas discharged from other chambers from entering the room to be repaired.

The lift valve is composed of a cylinder, a valve plate connected with the cylinder rod of the cylinder, and a valve seat matched with the valve plate. During assembly, the end of the cylinder rod of the cylinder passes through the valve plate. The valve plate is connected and fixed with the cylinder rod. The current lift valve can achieve the function of use, but there are still the following problems: first, the cylinder rod of the purchased cylinder needs to be lengthened, which increases the cost of equipment procurement; second, the gap between the valve plate stop on the upper edge of the valve seat and the valve plate The maximum distance is 500mm, and the valve plate must be in the lifted state to remove the fasteners (double nuts) under the valve plate, so as to realize the disassembly of the cylinder. At this time, some flue gas will enter the dust collector through the channel of the valve seat. The air duct of the middle box causes the deterioration of the maintenance environment and damages the health of the maintenance personnel, while the operation space of the upper box of the dust collector is narrow, and the disassembly of the existing structure is complicated and troublesome.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a dust collector lift valve with a simple structure and convenient use, which solves the problems of high use cost and inconvenient maintenance and operation of the existing lift valve, and is convenient to use even without lifting the cylinder. It is easy to disassemble the valve stem and cylinder to repair and replace the cylinder, which is more conducive to the maintenance operation, increases the safety of the operation, and reduces the purchase cost of the cylinder.

The technical scheme of the present utility model is:

A lift valve for a dust collector includes a cylinder, a valve plate and a valve seat. The technical points of the valve plate are as follows: a door-shaped frame-shaped support seat is arranged in the middle of the upper surface of the valve plate, and a door-shaped frame-shaped support seat is provided on the top surface of the door-shaped frame-shaped support seat. There is a through hole, the end of the cylinder rod of the cylinder is provided with an external thread, and the end of the cylinder rod passes through the through hole, the cylinder rod located above and below the through hole is respectively provided with a double nut and an elastic washer, the double nut is composed of The fastening nut close to the top surface of the door-shaped frame-shaped support seat and the locking nut far away from the top surface of the door-shaped frame-shaped support seat are composed of, and the elastic washer is clamped between the fastening nut and the top surface of the door-shaped frame-shaped support seat. In between, the locking nut near the end of the cylinder rod is provided with a pin hole corresponding to the cylinder rod, and a plug pin is arranged in the pin hole.

In the above-mentioned lifting valve of the dust collector, a connecting plate is welded at the bottom of the door-shaped frame-shaped support seat, and the connecting plate and the valve plate are welded and fixed.

In the above-mentioned lifting valve of the dust collector, the valve seat is composed of a cylindrical seat body and a horizontal flange arranged on the upper edge of the cylindrical seat body, and an annular sealing ring is provided on the upper surface of the horizontal flange.

In the above-mentioned lifting valve of the dust collector, the number of the valve seats is two, which are arranged concentrically, and a sealed air working chamber is formed between the cylindrical seat bodies of the two valve seats, and the outer wall of the cylindrical seat body located on the outside is opened. There are threaded holes for connecting the air inlet pipe, so that the sealing air can be delivered to the sealing air working chamber to enhance the sealing effect.

In the above-mentioned lifting valve of the dust collector, the upper surface of the annular sealing ring is provided with a plurality of concentric protrusions, and the center line of the protrusion coincides with the center line of the valve seat.

The beneficial effects of the present utility model are:

1. The connection structure between the valve plate and the cylinder has been optimized and adjusted. By adding a door-shaped frame-shaped support seat, the connection between the cylinder rod and the valve plate is transformed into the connection between the cylinder rod and the door-shaped frame-shaped support seat. , The door-shaped frame-shaped support seat can realize that the maintenance personnel can disassemble the nut in the upper box without the need to lift the valve plate, so as to realize the safe and rapid maintenance and replacement of the cylinder by the maintenance personnel of the dust collector, avoiding the valve When the plate is lifted, the flue gas enters the room to be repaired, which maintains a safe inspection environment and the health of maintenance personnel, and increases the safety of operation.

2. Due to the addition of a door-shaped frame-shaped support seat, the height of the installation position of the cylinder rod is increased, so the cylinder rod does not need to be lengthened, which reduces the purchase cost of the cylinder.

Description of drawings

Fig. 1 is the structural representation of Embodiment 1 of the present utility model;

Fig. 2 is the top view of valve plate and support seat in Fig. 1;

Fig. 3 is the enlarged view of A part in Fig. 1;

FIG. 4 is a partial structural schematic diagram of Embodiment 2 of the present invention.

In the figure: 1. Valve seat, 101. Cylindrical seat body, 102. Horizontal flanging, 2. Valve plate, 3. Cylinder rod, 4. Air cylinder, 5. Connection plate, 6. Door frame-shaped support seat, 7. Through hole, 8. Locking nut, 9. Fastening nut, 10. Elastic washer, 11. Bolt, 12. Threaded hole, 13. Annular sealing ring, 14. Sealing air working chamber.

Detailed ways

Example 1

As shown in Figures 1-3, the dust collector lift valve includes a cylinder 4, a valve plate 2 and a valve seat 1.

Wherein, the upper surface of the valve plate 2 is provided with a door-shaped frame-shaped support seat 6 in the middle, the top surface of the door-shaped frame-shaped support seat 6 is provided with a through hole 7, and the end of the cylinder rod 3 of the cylinder is provided with an outer Threaded and the end of the cylinder rod 3 passes through the through hole 7, a double nut and an elastic washer 10 are respectively provided on the cylinder rod 3 above and below the through hole 7. The tightening nut 9 on the surface and the locking nut 8 away from the top surface of the door-shaped frame-shaped support seat 6 are formed, and the elastic washer 10 is clamped between the tightening nut 9 and the top surface of the door-shaped frame-shaped support seat 6, close to The locking nut 8 at the end of the cylinder rod 3 is provided with a pin hole corresponding to the cylinder rod 3, and a plug pin 11 is provided in the pin hole.

In this embodiment, the bottom of the door frame-shaped support seat 6 is welded with a connecting plate 5 , and the connecting plate 5 is welded and fixed to the valve plate 2 .

When in use, the valve plate stop of the valve seat 1 cooperates with the valve plate 2 to prevent the flow of flue gas. Driven by the cylinder 4, the valve plate 2 is lifted and separated from the valve plate stop of the valve seat 1. box into the upper box. The locking nut 8 is used in conjunction with the tightening nut 9 to prevent the tightening nut 9 from loosening; the elastic washer 10 is also used to prevent the nut from loosening; the latch 11 prevents the locking nut 8 from rotating and falling off on the cylinder rod 3 to enhance reliability. When in use, the height and width of the door-shaped frame-shaped support seat 6 are reasonably selected in consideration of the disassembly and assembly space of the double nut, so as to facilitate the maintenance operation of the installation and maintenance personnel.

Example 2

As shown in FIG. 4 , in the lift valve of the dust collector, the valve seat 1 is composed of a cylindrical seat body 101 and a horizontal flange 102 arranged on the upper edge of the cylindrical seat body 101 . The upper surface of the horizontal flange 102 is composed of An annular sealing ring 13 is provided. The number of valve seats 1 is two, which are arranged concentrically. A sealed air working chamber 14 is formed between the cylindrical seat bodies 101 of the two valve seats. The threaded hole 12 of the pipeline is used to deliver the sealing air to the sealing air working chamber. The upper surface of the annular sealing ring 13 is provided with a plurality of concentric protrusions, and the center line of the protrusion coincides with the center line of the valve seat. When the valve plate 2 and the valve seat 1 are closed, the sealing air is injected into the sealing air working chamber 14 to enhance the sealing effect. The structure design is simple and easy to implement.

Others are the same as in Example 1.

The embodiments of the present invention have been described in detail above, but the content is only a preferred embodiment of the present invention, and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the present invention should still fall within the scope of this patent.

Claims (5)

1. The utility model provides a dust remover lift valve, includes cylinder, valve plate and disk seat, its characterized in that: the upper surface middle part of valve plate is equipped with door word frame form supporting seat, the top surface of door word frame form supporting seat is equipped with the through-hole, the cylinder rod end of cylinder is equipped with external screw thread and the terminal passing of cylinder rod the through-hole is located and is equipped with two nuts and elastic gasket on the cylinder rod of through-hole upper and lower side respectively, two nuts comprise the fastening nut who is close to door word frame form supporting seat top surface and the lock nut who keeps away from door word frame form supporting seat top surface, the elastic gasket centre gripping is equipped with the pinhole near the terminal lock nut of cylinder rod and cylinder rod correspondence between the top surface of fastening nut and door word frame form supporting seat, be equipped with the bolt in the pinhole.

2. The precipitator lift valve of claim 1, wherein: the bottom of the door-shaped frame-shaped supporting seat is welded with a connecting disc, and the connecting disc is welded and fixed with the valve plate.

3. The precipitator lift valve of claim 1, wherein: the valve seat is composed of a cylindrical seat body and a horizontal flanging arranged on the upper edge of the cylindrical seat body, and an annular sealing ring is arranged on the upper surface of the horizontal flanging.

4. A precipitator lift valve according to claim 3, wherein: the number of the valve seats is two, the valve seats are concentrically arranged, a sealed air working cavity is formed between the cylindrical seat bodies of the two valve seats, and a threaded hole used for being connected with an air inlet pipeline is formed in the outer wall of the cylindrical seat body located on the outer side, so that sealed air is conveyed into the sealed air working cavity, and the sealing effect is enhanced.

5. A precipitator lift valve according to claim 3, wherein: the upper surface of the annular sealing ring is provided with a plurality of circles of concentric bulges, and the central lines of the bulges are coincided with the central line of the valve seat.

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