CN216715239U

CN216715239U - Lift valve used in dust remover

Info

Publication number: CN216715239U
Application number: CN202122666786.9U
Authority: CN
Inventors: 赵来贵; 杨丽花
Original assignee: Ningbo Changqing Environmental Protection Technology Co ltd
Current assignee: Ningbo Changqing Environmental Protection Technology Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-06-10
Anticipated expiration: 2031-11-02

Abstract

The utility model discloses a lifting valve used in a dust remover, which comprises an air cylinder for providing power for lifting, wherein a pattern plate is arranged right below the air cylinder, the air cylinder is fixed on a top cover through a reinforcing plate, the head part of the air cylinder is provided with a floating joint, the other end of the floating joint is provided with an upper sealing valve cover, and the upper sealing valve cover consists of a steel plate and a sealing gasket; a lower sealing seat ring is fixed on the pattern plate, a layer of sealing gasket is arranged on the lower sealing seat ring, and the distance A between the lower sealing seat ring and the upper sealing valve cover is smaller than the stroke of the cylinder; the lift valve is provided with a guide structure which enables the upper sealing valve cover to move up and down. The utility model solves the technical problems of poor sealing performance and unstable and reliable operation of the lift valve in the prior art by additionally arranging the floating joint, the reinforcing plate and the sealing gasket.

Description

Lift valve used in dust remover

Technical Field

The utility model belongs to the field of environmental protection and dust removal, and particularly relates to a poppet valve used in a dust remover.

Background

In the production of steel, nonferrous metallurgy, building materials and chemical industry, a large amount of harmful gas containing dust particles can be generated. If the air is directly discharged, the air can be polluted, and the physical health of residents is seriously influenced. With the enhancement of the national environmental protection supervision means, various enterprises put forward high requirements on the treatment of dust-containing gas. At present, the bag-type dust collector is generally used for purifying dust-containing smoke, and the bag-type dust collector has a wide application range.

The gas circuit pipeline of sack cleaner often need open the gas and close gas, generally all realize this operating function with the poppet valve, the poppet valve mainly has the cylinder that is used for the drive, the connecting rod, the valve plate, solenoid valve etc. constitute, the cylinder, connecting rod and valve plate use the screw thread rigid connection, and poppet valve closes the back valve plate and adopts hard contact with sealed face, the valve plate is rocking easily taking place at the in-process that promotes and close, unstable phenomena such as slope, lead to valve plate and sealed face laminating that can not be fine, the leakproofness is poor, and the vibration impact that brings during the promotion still very easily damages the cylinder, can't be used in normal use.

Disclosure of Invention

Aiming at the defects existing in the prior art, the technical problems to be solved by the utility model are as follows: provided is a poppet valve having excellent sealing performance and stable operation.

In order to solve the technical problems, the utility model is realized by the following technical measures: a lift valve used in a dust remover comprises an air cylinder for providing power for lifting, wherein a pattern plate is arranged right below the air cylinder, the air cylinder is fixed on a top cover through a reinforcing plate, the head of the air cylinder is provided with a floating joint, the other end of the floating joint is provided with an upper sealing valve cover, and the upper sealing valve cover is composed of a steel plate and a sealing gasket; a lower sealing seat ring is fixed on the pattern plate, a layer of sealing gasket is arranged on the lower sealing seat ring, and the distance A between the lower sealing seat ring and the upper sealing valve cover is smaller than the stroke of the cylinder; the lifting valve is provided with a guide structure which enables the upper sealing valve cover to move up and down.

Compared with the prior art, the utility model has the advantages that: by additionally arranging the floating joint, the floating joint can freely rotate, so that the rigid stress generated when the cylinder moves can be eliminated, and the service life of the poppet valve is prolonged; the installation reinforcing plate is additionally arranged, so that the stress area of the top cover is increased, the top cover can not deform, and the stability of the poppet valve is improved; the sealing gasket is fixed on the steel plate of the upper sealing valve cover, so that the sealing performance is enhanced. Therefore, the technical problems of poor sealing performance and unstable and reliable operation in the prior art are solved.

As an improvement of the present invention, the guide structure is that a plurality of polish rods are uniformly fixed on the lower sealing seat ring, a plurality of guide holes corresponding to the positions of the polish rods are arranged on the upper sealing valve cover, the polish rods pass through the guide holes on the upper sealing valve cover, and the guide holes and the polish rods are in clearance fit. The purpose of selecting the design is as follows: one end of the polish rod is fixed on the lower sealing seat ring, the other end of the polish rod penetrates through the corresponding guide hole in the upper sealing valve cover, the upper sealing valve cover can move downwards under the thrust action of the cylinder, and the two sides of the polish rod are limited by the polish rod, so that the polish rod cannot generate transverse displacement, and the concentricity of the upper sealing valve cover is guaranteed.

As an improvement of the utility model, a single nut and a spring gasket are arranged in the middle of one end of the floating joint connected with the cylinder, and the single nut and the spring gasket are welded and fixed after being initially fastened with the floating joint. The purpose of selecting the design is as follows: the nut can be prevented from loosening due to long-time work, and the nut can be welded and fixed once and for all.

As an improvement of the utility model, double nuts are arranged in the middle of the floating joint connected with the upper sealing valve cover, and the double nuts are welded and fixed after being initially fixed. The purpose of selecting the design is as follows: the nut can be prevented from loosening due to long-time work, and the nut can be welded and fixed once and for all.

As an improvement of the utility model, an upper outlet throttle valve and a lower outlet throttle valve are arranged on the cylinder. The purpose of selecting the design is as follows: the outlet throttle valve controls the action speed of the air cylinder by adjusting the outlet flow, if the upper outlet throttle valve is closed a little, the backward speed of the air cylinder is slowed, and if the lower outlet throttle valve is closed a little, the forward speed of the air cylinder is slowed, thereby reducing the impact between parts.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

figure 1 is a schematic view of a poppet valve according to the present invention.

Fig. 2 is a schematic view of the upper sealing valve cover according to the present invention.

Fig. 3 is a view of the installation of the floating joint according to the present invention.

Fig. 4 is a schematic view of a guide structure according to the present invention.

Description of reference numerals: 1. a cylinder; 2. a pattern plate; 3. a reinforcing plate; 4. a top cover; 5. a floating joint; 6. an upper sealing valve cover; 7. a steel plate; 8. a gasket; 9. a lower sealing seat ring; 10. a polish rod; 11. a single nut; 12. a spring washer; 13. double nuts; 14. an upper outlet throttle valve; 15. a lower outlet throttle valve.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first feature being in direct contact with the second feature, and may also include the recitation of the first feature being in contact with the second feature, but rather being in contact with the additional feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

Example 1

Referring to fig. 1 to 4, the poppet valve used in the dust collector provided in this embodiment is composed of a cylinder 1, a lower sealing seat ring 9 on a faceplate 2, a reinforcing plate 3, a floating joint 5, an upper sealing valve cover 6, a guiding structure, and the like.

In the embodiment of the utility model, the cylinder 1 is a single-cylinder double-acting high-thrust cylinder 1, the stroke is 350mm, the distance A between the lower sealing seat ring 9 and the upper sealing valve cover 6 is 348mm, and when the cylinder 1 extends to the bottom, the sealing gasket 8 on the lower sealing seat ring 9 and the sealing gasket 8 on the upper sealing valve cover 6 are retracted into 2mm together, so that the sealing performance of the lift valve is ensured, and the impact on the cylinder 1 is avoided.

In the embodiment of the present application, a rubber pad with a thickness of about 15mm is glued on the lower sealing seat ring 9 of the faceplate 2.

In the embodiment of the application, the reinforcing plate 3 is a steel plate 7 with the thickness of 6mm, and is clamped between the cylinder 1 and the top cover 4, and the surface area is increased, so that when the cylinder 1 is stressed, the deformation of the top cover 4 can be ensured not to exceed 1mm, and if the reinforcing plate 3 is not arranged, the top cover 4 can be seriously deformed under the impact force of the cylinder 1, so that the use effect is influenced.

In the embodiment of the utility model, the floating joint 5 is a common universal joint, one end of the floating joint is provided with an internal thread hole which is fixedly connected with a screw rod extending out of the cylinder 1 in a threaded manner, and the floating joint is welded by electric welding after being fixed; the other end is provided with an external thread rod which is fixed with the upper sealing valve cover 6 by threads, then fixed by a double nut 13 and finally welded by electric welding.

In the embodiment of the application, the upper sealing valve cover 6 is a circular steel plate 7, a rubber pad with the diameter of 15mm is glued on the surface of the circular steel plate 7, two through holes (namely guide holes) are arranged on the upper sealing valve cover 6 close to the outer ring, the inner diameter of each through hole is 1mm larger than the outer diameter of the polished rod 10, the upper sealing valve cover 6 can be guaranteed to move up and down along the polished rod 10 under the pushing of the cylinder 1, and good concentricity can be guaranteed.

In the embodiment of the present application, please refer to fig. 4, the guiding structure is two polish rods 10 fixed on the lower sealing seat ring 9 by bolts, and the other end of the polish rod 10 passes through a through hole (i.e. a guiding hole) on the upper sealing valve cover 6, and the through hole (i.e. the guiding hole) is in clearance fit with the polish rod 10. Because both sides are restricted by the polished rod 10, the upper sealing valve cover 6 can not generate transverse displacement, thereby ensuring the concentricity of the upper sealing valve cover 6. It should be noted here that two or more polish rods 10 can be uniformly distributed on the lower sealing seat 9 for guiding; similarly, the polish rod 10 may be fixed to the upper sealing bonnet 6, and the lower sealing seat 9 may be provided with a through hole corresponding thereto for guiding.

In the embodiment of the present invention, please refer to fig. 1, an upper outlet throttle valve 14 and a lower outlet throttle valve are disposed on the cylinder 1. The 15 outlet throttle valve controls the action speed of the cylinder 1 by adjusting the outlet flow, if the upper outlet throttle valve 14 is closed a little, the backward speed of the cylinder 1 is reduced, if the lower outlet throttle valve is closed a little, the forward speed of the cylinder 1 is reduced, thereby reducing the impact between parts.

According to the lift valve used in the dust remover, by additionally installing the floating joint 5, the rigid stress generated when the cylinder 1 moves can be eliminated, and the service life of the lift valve is prolonged; the top cover 4 can not deform by additionally arranging the reinforcing plate 3, so that the stability of the poppet valve is improved; the sealing performance is enhanced by fixing the sealing gasket 8 on the steel plate 7 of the upper sealing valve cover 6. Thereby the technical problems of poor sealing performance and unstable and reliable operation in the prior art are solved.

The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the scope of the utility model as defined by the independent claims are intended to be embraced therein.

Claims

1. A lift valve used in a dust remover comprises a cylinder (1) for providing power for lifting, a pattern plate (2) is arranged right below the cylinder (1), and the lift valve is characterized in that: the air cylinder (1) is fixed on the top cover (4) through the reinforcing plate (3), the head of the air cylinder (1) is provided with the floating joint (5), the other end of the floating joint (5) is provided with the upper sealing valve cover (6), and the upper sealing valve cover (6) consists of a steel plate (7) and a sealing gasket (8); a lower sealing seat ring (9) is fixed on the pattern plate (2), a layer of sealing gasket (8) is arranged on the lower sealing seat ring (9), and the distance A between the lower sealing seat ring (9) and the upper sealing valve cover (6) is smaller than the stroke of the cylinder (1); the lifting valve is provided with a guide structure for enabling the upper sealing valve cover (6) to move up and down.

2. A poppet valve for use in a precipitator according to claim 1, wherein: the guide structure is characterized in that a plurality of polished rods (10) are uniformly fixed on the lower sealing seat ring (9), a plurality of guide holes corresponding to the polished rods (10) in position are formed in the upper sealing valve cover (6), the polished rods (10) penetrate through the guide holes in the upper sealing valve cover (6), and the guide holes are in clearance fit with the polished rods (10).

3. A poppet valve for use in a precipitator according to claim 1, wherein: the floating joint (5) and the end connected with the cylinder (1) are provided with a nut and a spring gasket (12) in the middle, and the nut, the spring gasket (12) and the floating joint (5) are welded and fixed after being preliminarily fastened.

4. A poppet valve for use in a precipitator according to claim 1, wherein: the floating joint (5) and the middle part connected with the upper sealing valve cover (6) are provided with double nuts (13), and the double nuts (13) are welded and fixed after being preliminarily fixed.

5. A poppet valve for use in a precipitator according to claim 1, wherein: an upper outlet throttle valve (14) and a lower outlet throttle valve are arranged on the cylinder (1).