CN215109827U - Piston and coal gasifier knocker - Google Patents

Abstract

The application relates to a coal gasifier knocker technical field provides a piston and coal gasifier knocker, and this piston includes: the piston comprises a piston head and a piston rod arranged on the piston head, wherein two first annular grooves are formed in the outer side surface of the piston head at intervals, V-shaped sealing rings with V-shaped cross sections are arranged in the first annular grooves, and the opening directions of the two V-shaped sealing rings are opposite or opposite to each other along the axial direction of the piston rod. Set up two first annular grooves through the lateral surface at the piston head, set up a V type sealing washer in each first annular groove, two V type sealing washers can prevent that roll cracked phenomenon from appearing in the sealing washer on the one hand, and on the other hand V type sealing washer can compensate the sealed effect of assurance voluntarily after taking place wearing and tearing, and consequently, this piston has that the leakproofness is good, long service life's advantage.

Description

Piston and coal gasifier knocker

Technical Field

The application belongs to the technical field of coal gasifier knockers, and particularly relates to a piston and a coal gasifier knocker.

Background

A great deal of dust exists in the coal gasification furnace during the use process, and the dust is very easy to adhere to structures such as a heat exchanger, a coil pipe and an inner wall of the coal gasification furnace. The coal gasifier knocker is used for knocking places such as a quenching pipe and a gas return chamber of the coal gasifier and a cylindrical membrane wall of a synthetic gas cooler, so that the problems that the coal gasifier is easy to deposit ash to influence heat transfer, normal production cannot be guaranteed and the like in the coal gasification process are solved.

Wherein, the piston and the cylinder are important parts of the knocker, and the piston reciprocates in the cylinder to complete the impact rapping action of the knocker. The existing piston is generally sealed with the inner wall of a cylinder body of a cylinder through a sealing piece, the sealing piece is generally in a single sealing ring mode, and the normal operation of a rapping device is affected due to the fact that the sealing piece is easy to roll, break, abrade and leak in repeated high-frequency rapping motion of the piston.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the present application is to provide a piston to solve the technical problem of air leakage existing in the prior art due to the fact that a sealing element is prone to rolling, breaking and wearing.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: providing a piston comprising: the piston comprises a piston head and a piston rod arranged on the piston head, wherein two first annular grooves are formed in the outer side surface of the piston head at intervals, V-shaped sealing rings with V-shaped cross sections are arranged in the first annular grooves, and the opening directions of the two V-shaped sealing rings are opposite or opposite to each other along the axial direction of the piston rod.

In one embodiment, the piston rod is provided with a positioning convex ring, one end of the piston rod penetrates through the piston head so that one end face of the piston head is abutted to the positioning convex ring, one end of the piston rod is provided with a back cap in threaded abutment with the other end face of the piston head, and the back cap is provided with a locking screw rod in threaded connection with the piston rod.

In one embodiment, the axial direction of the anti-loosening screw is the same as the axial direction of the piston rod, and the anti-loosening screw is in threaded connection with the end face of the piston rod through the back cap.

In one embodiment, the axial direction of the anti-loosening screw is perpendicular to the axial direction of the piston rod, and the anti-loosening screw is in threaded connection with the side face of the piston rod through the back cap.

In one embodiment, the number of the anti-loose screws is at least three.

In one embodiment, the inner wall of the piston head is provided with two second annular grooves arranged at intervals, and a sealing ring is arranged in each second annular groove.

In one embodiment, the cross-section of the seal ring is V-shaped or circular.

It is another object of the present application to provide a coal gasifier rapper, comprising a piston as described above.

The application provides a pair of piston and coal gasifier beats ware's beneficial effect lies in: set up two first annular grooves through the lateral surface at the piston head, set up a V type sealing washer in each first annular groove, two V type sealing washers are for single sealing washer in the prior art, can prevent that roll fracture's phenomenon from appearing in the sealing washer on the one hand, and on the other hand V type sealing washer can compensate the assurance sealed effect automatically after taking place wearing and tearing, and consequently, this piston has that the leakproofness is good, long service life's advantage.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic plan view of a piston according to an embodiment of the present disclosure;

fig. 2 is a schematic cross-sectional structural diagram of a piston provided in an embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

1. a piston head; 11. a first annular groove; 12. a second annular groove; 2. a piston rod; 21. positioning the convex ring; 3. carrying a cap; 4. a V-shaped sealing ring; 5. a locking screw; 6. and (5) sealing rings.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and 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 considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

A piston provided in an embodiment of the present application will now be described with reference to fig. 1 and 2. The piston comprises a piston head 1 and a piston rod 2. The piston rod 2 is arranged on the piston head 1, and the axis of the piston rod 2 is coincident with the axis of the piston head 1. The outer side surface of the piston head 1 is provided with two first annular grooves 11 arranged at intervals, a V-shaped sealing ring 4 is arranged in each first annular groove 11, and a circle of V-shaped groove is formed in each V-shaped sealing ring 4 to enable the section of each V-shaped sealing ring to be V-shaped.

In the present embodiment, the openings of the two V-shaped seal rings 4 are oppositely oriented in the axial direction of the piston rod 2, or the openings of the two V-shaped seal rings 4 are oppositely oriented in the axial direction of the piston rod 2. Under the normal condition, the edge of V type sealing washer 4 extrudes the lateral surface of piston head 1 to V type sealing washer 4 can with the cylinder body inner wall butt of cylinder, realize sealed, when this piston was installed in the cylinder, the opening of V type sealing washer 4 can extrude and be less than the state of natural not atress, the opening orientation of V type sealing washer 4 is the same with the axis direction of piston rod 2, when piston rod 2 was along axial direction reciprocating motion like this, V type sealing washer 4 can not roll and can also compensate after wearing and tearing partly automatically, guarantee the leakproofness.

The embodiment of the application provides a piston, through set up two first annular grooves 11 at the lateral surface of piston head 1, set up a V type sealing washer 4 in each first annular groove 11, V type sealing washer 4 can prevent that rolling fracture's phenomenon from appearing in sealing washer 6 on the one hand, and on the other hand V type sealing washer 4 can compensate the assurance sealed effect automatically after taking place wearing and tearing, and consequently, this piston has that the leakproofness is good, long service life's advantage.

As shown in fig. 1 and fig. 2, in the present embodiment, a positioning convex ring 21 is provided on the piston rod 2, one end of the piston rod 2 passes through the piston head 1 so that one end surface of the piston head 1 abuts against the positioning convex ring 21, one end of the piston rod 2 is provided with a back cap 3 which abuts against the other end surface of the piston head 1 through a thread, and the back cap 3 and the positioning convex ring 21 cooperate to fix the piston head 1 on the piston rod 2. Specifically, be equipped with the check screw 5 of threaded connection piston rod 2 on back of the body cap 3, check screw 5's effect is that the pine that avoids back of the body cap 3 to appear in the piston knocking process because of alternating stress effect leads to moves back the phenomenon, guarantees the stability that piston head 1 and piston rod 2 are connected.

As shown in fig. 2, in an embodiment of the present embodiment, an axial direction of the anti-loose screw 5 is the same as an axial direction of the piston rod 2, and the anti-loose screw 5 is in threaded connection with an end surface of the piston rod 2 through the back cap 3, that is, the anti-loose screw 5 passes through the end surface of the back cap 3 and then is in threaded connection with the piston rod 2, so that the back cap 3 can be prevented from loosening and retreating. In this embodiment, the check screws 5 are provided in three, and the three check screws 5 are circumferentially spaced around the axis of the piston rod 2 at a central angle of 120 °. Of course, the number of the anti-loose screws 5 is also four, five or six. The diameter of the piston rod 2 is selected.

In another embodiment of the present embodiment, the axial direction of the check screw 5 is perpendicular to the axial direction of the piston rod 2, and the check screw 5 is screwed to the side surface of the piston rod 2 via a nut. Namely, the anti-loose screw 5 passes through the side surface of the back cap 3 and is in threaded connection with the side surface of the piston rod 2. In this embodiment, the locking screw 5 can be installed only after the threaded holes are formed in the side surfaces of the back cap 3 and the screw 3 and aligned with each other, or the piston rod 2 is provided with a circle of groove, and the locking screw 5 is inserted into the groove to have a locking and withdrawing effect. In this embodiment, three check screws 5 are provided, and the three check screws 5 are arranged at equal arc pitch intervals on the outer peripheral surface of the back cap 3. Of course, the number of the anti-loose screws 5 is also four, five or six. The diameter of the piston rod 2 is selected.

As shown in fig. 2, in this embodiment, a through hole is formed in the piston head 1, the through hole is used for the piston rod 2 to pass through, two second annular grooves 12 are formed in the inner wall of the through hole of the piston head 1 at intervals, a sealing ring 6 is arranged in each second annular groove 12, and the sealing ring 6 is used for ensuring the sealing property between the piston head 1 and the piston rod 2, so that compared with the prior art in which the piston rod 2 and the piston head 1 are connected by a thread, the sealing property is good. In the present embodiment, the cross section of the seal ring 6 is V-shaped or circular. The V-shaped sealing ring 4 is adopted when the section is V-shaped, and the conventional circular sealing ring 6 when the section is circular. The two sealing rings 6 are provided for ensuring the sealing performance.

The present embodiment also provides a coal gasifier rapper, comprising at least a piston as described above. Therefore, the coal gasifier knocker can be in a high-frequency action working state for a long time by adopting the piston. The existing knocker can knock 10 ten thousand times and is in a better state, and the coal gasifier knocker of the embodiment of the application can knock 20 ten thousand times or so due to the adoption of the piston, so that the service life cycle is greatly prolonged, and the market competitiveness is improved.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (8)

1. A piston, comprising: the piston comprises a piston head (1) and a piston rod (2) arranged on the piston head (1), wherein two first annular grooves (11) are arranged on the outer side surface of the piston head (1) at intervals, V-shaped sealing rings (4) with V-shaped cross sections are arranged in the annular grooves, and the opening directions of the two V-shaped sealing rings (4) are opposite or opposite to each other along the axial direction of the piston rod (2).

2. The piston of claim 1, wherein: the piston rod is characterized in that a positioning convex ring (21) is arranged on the piston rod (2), one end of the piston rod (2) penetrates through the piston head (1) to enable one end face of the piston head (1) to be abutted against the positioning convex ring (21), one end thread of the piston rod (2) is provided with a back cap (3) abutted against the other end face of the piston head (1), and a locking screw (5) in threaded connection with the piston rod (2) is arranged on the back cap (3).

3. The piston of claim 2, wherein: the axial direction of the anti-loosening screw rod (5) is the same as that of the piston rod (2), and the anti-loosening screw rod (5) is in threaded connection with the end face of the piston rod (2) through the back cap (3).

4. The piston of claim 2, wherein: the axis direction of the anti-loosening screw rod (5) is perpendicular to the axis direction of the piston rod (2), and the anti-loosening screw rod (5) is in threaded connection with the side face of the piston rod (2) through the back cap (3).

5. The piston of claim 3 or 4, wherein: the number of the anti-loosening screws (5) is at least three.

6. The piston of claim 5, wherein: the inner wall of the piston head (1) is provided with two second annular grooves (12) which are arranged at intervals, and a sealing ring (6) is arranged in each second annular groove (12).

7. The piston of claim 6, wherein: the section of the sealing ring (6) is V-shaped or circular.

8. A coal gasifier rapper, comprising a piston according to any one of claims 1 to 7.

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