CN112761938A

CN112761938A - Exhaust device of boiler feed pump

Info

Publication number: CN112761938A
Application number: CN202110075041.7A
Authority: CN
Inventors: 谢琴
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2021-05-07

Abstract

The invention relates to the technical field of boiler feed pumps, in particular to an exhaust device of a boiler feed pump, which comprises a servo electric cylinder, a cylinder body, a fixed disc, a one-way valve, an auxiliary pipe, a connecting pipe, an annular sealing gasket, a fixed cylinder and a piston piece.

Description

Exhaust device of boiler feed pump

Technical Field

The invention relates to an exhaust device of a boiler feed pump, belonging to the technical field of rotating shaft processing.

Background

The boiler feed pump is used for conveying clean water and liquid with physical and chemical properties similar to water, can convey high-temperature clean water below 280 ℃, and is suitable for boiler feed, factory and city feed. The device is suitable for conveying clear water with the temperature lower than 110 ℃ or other non-corrosive liquid with physical and chemical properties similar to water, and is widely used for boiler water supply of industrial, mining, enterprise and public institutions and urban domestic water supply. But also the trade such as widely used pressure vessel supplies water, hot water circulation, in boiler feed pump use, the pump chamber of boiler feed pump often can be mixed with air and steam, so often need exhaust to boiler feed pump, the exhaust apparatus of boiler feed pump at present adopts hand control valve to realize the exhaust operation mostly, but the mode causes steam scald easily like this, still easily appear forgetting to carry out the exhaust operation, inconvenient use, the security is poor, consequently, the exhaust apparatus of boiler feed pump needs to be designed to solve above-mentioned problem.

Summary of the invention

Aiming at the problems in the prior art, the invention provides an exhaust device of a boiler feed water pump.

The technical scheme adopted by the invention for solving the technical problems is as follows: an exhaust device of a boiler feed pump comprises a servo electric cylinder, a cylinder body, a fixed disc, a one-way valve, auxiliary pipes, connecting pipes, an annular sealing gasket, a fixed cylinder and a piston piece, wherein the lower end of the fixed disc is symmetrically and fixedly connected with the two auxiliary pipes and the auxiliary pipes extend to the upper end of the fixed disc, the two auxiliary pipes are respectively provided with the one-way valve, the lower ends of the two auxiliary pipes are respectively communicated with the two connecting pipes communicated with a pump cavity and a recovery cavity, the middle position of the upper end of the fixed disc is fixedly connected with the fixed cylinder and the two connecting pipes are arranged in the fixed cylinder, the upper end of the fixed cylinder is in threaded connection with the cylinder body and extends into the cylinder body, the annular sealing gasket is arranged between the cylinder body and the fixed disc and sleeved at the outer end of the fixed cylinder, the piston piece is in sliding connection with the inside, the movable end of the servo electric cylinder penetrates through the cylinder body and is connected with the piston piece.

Further, barrel upper end intermediate position intercommunication sets up the cylinder body lower extreme at the servo electronic jar of supplementary section of thick bamboo and supplementary section of thick bamboo fixing, the expansion end of servo electronic jar runs through supplementary section of thick bamboo, supplementary section of thick bamboo downside annular end fixed connection mounting disc and mounting disc laminating set up in the barrel upper end, and supplementary section of thick bamboo is the integral structure with the mounting disc, the inside top equidistance of barrel sets up a plurality of construction bolt and the construction bolt that is circular arrangement and is in the supplementary section of thick bamboo outside, construction bolt passes the mounting panel and the threaded connection fastening nut of barrel, mounting disc and servo electronic jar.

Further, a plurality of stiffener and the stiffener that the equidistance setting is circular arrangement between the mounting panel of mounting disc and servo electronic jar are fixed in the mounting disc upper end, and the stiffener is alternate with the construction bolt.

Further, lid and auxiliary tube that auxiliary tube annular end downside edge fixed connection opening arranged down are integrated into one piece structure with the lid, the connecting pipe upper end sets up the lid and extends into in the lid, connecting pipe annular end upside edge fixed connection spacing ring and spacing ring are integrated into one piece structure with the connecting pipe, the spacing ring sets up on the inside top of lid, the draw-in groove is seted up to lid downside annular inner wall, assembly jump ring and jump ring are in the spacing ring lower extreme on the draw-in groove.

Furthermore, an annular sealing groove is formed in the annular end of the limiting ring, and a sealing ring is assembled on the annular sealing groove.

Further, the through-hole is seted up to piston spare upper end intermediate position, the through-hole lower extreme sets up recess and sets up at piston spare lower extreme intermediate position, expansion end downside annular end fixed connection limiting plate and the limiting plate of servo electric cylinder are in piston spare upper end, the expansion end of servo electric cylinder runs through-hole and recess, the spacing dish of expansion end downside annular end threaded connection of servo electric cylinder, spacing dish upper end sets up the recess, and spacing dish extends into inside the recess and laminates with the inside top of recess.

Further, piston spare upper end intermediate position equidistance is seted up and is a plurality of locating hole and the locating hole of circular arrangement and be in the through-hole outside, the recess upper end sets up a plurality of locating hole, limiting plate lower extreme border position equidistance fixed connection is a plurality of reference column and the reference column of circular arrangement and is in inside the locating hole.

Furthermore, a semicircular head is arranged at the lower end of the positioning column.

The invention has the beneficial effects that: (1) according to the exhaust device of the boiler feed pump, the piston piece is driven to circularly move up and down along the inner wall of the cylinder body through the servo electric cylinder, negative pressure can be generated in the cylinder body in the upward movement process of the piston piece, air and steam in the pump cavity of the feed pump can enter the cylinder body along the connecting pipe and the auxiliary pipe, and air and steam in the cylinder body can enter the recovery mechanism along the connecting pipe and the auxiliary pipe in the downward movement process of the piston piece, so that mechanical continuous exhaust work of the feed pump is realized, the use is convenient, the safety is high, in addition, the cylinder body is in threaded connection with the fixed cylinder, the quick assembly and disassembly of the cylinder body is realized, and the maintenance and the replacement are convenient.

(2) According to the exhaust device of the boiler feed water pump, the servo electric cylinder can be fixedly arranged at the upper end of the cylinder body through the mounting bolt and the fastening nut, in addition, the threaded part of the mounting bolt can be exposed through the auxiliary cylinder and the mounting disc, when the mounting bolt and the fastening nut cannot be disassembled due to the phenomenon of rust and the like, the exposed part of the mounting bolt can be cut off by using a tool, and the disassembly of the servo electric cylinder is convenient.

(3) According to the exhaust device of the boiler feed pump, the clamp spring can be disassembled through a tool, the limit between the limiting ring and the cover body is removed, the limiting ring and the cover body are disassembled, the connecting pipe and the auxiliary pipe are quickly disassembled and assembled, and the assembly and the maintenance are convenient.

(4) The exhaust device of the boiler feed pump can rotate the limiting disc, so that the limiting disc is detached from the movable end of the servo electric cylinder, the movable end of the servo electric cylinder is rapidly detached from the piston piece, and the maintenance and the replacement are convenient.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural view of an exhaust apparatus of a boiler feed pump according to the present invention;

FIG. 2 is a cross-sectional view of a cylinder in an exhaust unit of a boiler feed pump according to the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic view of a piston member of an exhaust assembly of a boiler feed water pump in accordance with the present invention;

FIG. 5 is an assembly view of a connection pipe and a connection pipe in an exhaust apparatus of a boiler feed pump according to the present invention;

fig. 6 is an enlarged view of a portion B in fig. 5.

In the figure: 1. servo electronic jar, 2, barrel, 3, fixed disk, 4, check valve, 5, auxiliary tube, 6, connecting pipe, 7, annular sealing pad, 8, a fixed section of thick bamboo, 9, piston spare, 11, an auxiliary section of thick bamboo, 12, mounting disc, 13, construction bolt, 14, stiffener, 15, fastening nut, 51, lid, 52, jump ring, 53, spacing ring, 54, sealing washer, 91, recess, 92, locating hole, 93, through-hole, 94, reference column, 95, limiting plate, 96, spacing dish.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Referring to fig. 1-6, the present invention provides a technical solution: an exhaust device of a boiler feed pump comprises a servo electric cylinder 1, a cylinder 2, a fixed disc 3, a one-way valve 4, auxiliary pipes 5, connecting pipes 6, an annular sealing gasket 7, a fixed cylinder 8 and a piston piece 9, wherein the lower end of the fixed disc 3 is symmetrically and fixedly connected with the two auxiliary pipes 5, the auxiliary pipes 5 extend to the upper end of the fixed disc 3, the two auxiliary pipes 5 are respectively provided with the one-way valve 4, the auxiliary pipes 5 are enabled to flow in one direction through the one-way valve 4, the lower ends of the two auxiliary pipes 5 are respectively communicated with the two connecting pipes 6 which are respectively communicated with a pump cavity and a recovery cavity, the air and steam are conveyed through the auxiliary pipes 5 and the connecting pipes 6, the middle position of the upper end of the fixed disc 3 is fixedly connected with the fixed cylinder 8, the two connecting pipes 6 are arranged in the fixed cylinder 8, the upper end of the fixed cylinder 8 is in threaded connection with the cylinder 2 and extends into the, set up annular sealing pad 7 and annular sealing pad 7 suit in 8 outer ends of fixed cylinder between barrel 2 and the fixed disk 3, through annular sealing pad 7, realize the sealing connection between barrel 2 and the fixed

disk

3, 2 inside sliding connection piston spare 9 of barrel and piston spare 9 are in 8 upside of fixed cylinder, the cylinder body of 2 upper end intermediate position fixed connection servo electric cylinder 1 of barrel, through servo electric cylinder 1, drive piston spare 9 is along 2 inner walls of barrel upper and lower circulating movement, the expansion end of servo electric cylinder 1 runs through barrel 2 and is connected with piston spare 9.

Specifically, in the process of conveying the water feeding pump to the boiler, the servo electric cylinder 1 drives the piston member 9 to circularly move up and down along the inner wall of the cylinder 2, when the piston member 9 moves up, negative pressure can be generated in the cylinder 2, air and steam in the pump cavity of the water feeding pump can enter the cylinder 2 along the connecting pipe 6 communicated with the pump cavity and the corresponding auxiliary pipe 5 under the action of the negative pressure, when the piston member 9 moves down, the air and the steam in the cylinder 2 can enter the recovery mechanism along the connecting pipe 6 communicated with the recovery cavity and the corresponding auxiliary pipe 5, in addition, the auxiliary pipe 5 can only flow in a single direction through the check valve 4 on the auxiliary pipe 5, the mechanical continuous exhaust work of the water feeding pump is realized, the use is convenient, the safety is high, in addition, the cylinder 2 can be rotated, and because the cylinder 2 is in threaded connection with the fixed cylinder 8, so barrel 2 rotates and makes barrel 2 upwards remove along a solid fixed cylinder 8 simultaneously to make barrel 2 and solid fixed cylinder 8 dismantle, realize the quick assembly disassembly of barrel 2, be convenient for maintain and change.

An auxiliary cylinder 11 is communicated with and arranged at the middle position of the upper end of a cylinder body 2, the auxiliary cylinder 11 is fixed at the lower end of the cylinder body of a servo electric cylinder 1, the movable end of the servo electric cylinder 1 penetrates through the auxiliary cylinder 11, the annular end at the lower side of the auxiliary cylinder 11 is fixedly connected with a mounting plate 12, the mounting plate 12 is attached to the upper end of the cylinder body 2, the auxiliary cylinder 11 and the mounting plate 12 are in an integrated structure, a plurality of mounting bolts 13 which are circularly arranged are equidistantly arranged at the top end inside the cylinder body 2, the mounting bolts 13 are positioned outside the auxiliary cylinder 11, the mounting bolts 13 penetrate through the cylinder body 2, the mounting plate 12 and a mounting plate of the servo electric cylinder 1 and are in threaded connection with fastening nuts 15, specifically, the servo electric cylinder 1 can be fixedly arranged at the upper end of the cylinder body 2 through the mounting bolts 13 and the fastening nuts 15, in addition, when the mounting bolt 13 and the fastening nut 15 cannot be removed due to rust or the like, the exposed portion of the mounting bolt 13 can be cut off with a tool, thereby facilitating the removal of the servo electric cylinder 1.

Equidistant setting is a plurality of stiffener 14 and the stiffener 14 of circular arrangement between mounting disc 12 and servo electronic jar 1's the mounting panel and fixes in mounting disc 12 upper end, and stiffener 14 is alternate with mounting bolt 13 and arranges, specifically, through stiffener 14, increases the intensity between mounting disc 12 and the mounting panel of servo electronic jar 1, and the effective energy is protected auxiliary cylinder 11.

Lid 51 and auxiliary tube 5 and lid 51 that auxiliary tube 5 annular end downside border position fixed connection opening arranged down are integrated into one piece structure, 6 upper ends of connecting pipe set up lid 51 and extend into in the

lid

51, 6 annular end upside border position fixed connection spacing ring 53 and spacing ring 53 are integrated into one piece structure with connecting pipe 6, spacing ring 53 sets up at the inside top of lid 51, lid 51 downside annular inner wall sets up the draw-in groove, assemble jump ring 52 and jump ring 52 in spacing ring 53 lower extreme on the draw-in groove, specifically, can dismantle jump ring 52 from the draw-in groove through the instrument, and take jump ring 52 out from lid 51, remove the restriction between spacing ring 53 and the lid 51, then with the dismantlement between spacing ring 53 and the lid 51, realize the quick assembly disassembly between connecting pipe 6 and auxiliary tube 5, be convenient for equipment and maintenance.

An annular sealing groove is formed in the annular end of the limiting ring 53, a sealing ring 54 is assembled on the annular sealing groove, and specifically, the limiting ring 53 is hermetically connected with the cover body 51 through the sealing ring 54.

The middle position of the upper end of the piston piece 9 is provided with a through hole 93, the movable end of the servo electric cylinder 1 conveniently penetrates through the piston piece 9 through the through hole 93, the lower end of the through hole 93 is provided with a groove 91, the groove 91 is arranged in the middle position of the lower end of the piston piece 9, the groove 91 can provide an installation space for the limiting disc 96, the annular end at the lower side of the movable end of the servo electric cylinder 1 is fixedly connected with a limiting plate 95, the limiting plate 95 is positioned at the upper end of the piston piece 9, the installation position of the piston piece 9 can be limited through the limiting plate 95, the movable end of the servo electric cylinder 1 penetrates through the through hole 93 and the groove 91, the annular end at the lower side of the movable end of the servo electric cylinder 1 is in threaded connection with the limiting disc 96, the groove 91 is arranged at the upper end of the limiting disc 96, the limiting disc 96 extends into the groove 91 and is attached to the top end inside the, so spacing dish 96 rotates and to make spacing dish 96 and servo electronic jar 1's expansion end dismantle, realizes the quick assembly disassembly between servo electronic jar 1's expansion end and the piston spare 9, is convenient for maintain and change, in addition through spacing dish 96 and limiting plate 95, increases the clamping area to piston spare 9, reduces piston spare 9 and takes place the deformation probability, promotes piston spare 9 life.

A plurality of positioning holes 92 and positioning holes 92 which are circularly arranged are equidistantly formed in the middle of the upper end of the piston part 9 and are positioned outside the through hole 93, a plurality of positioning holes 92 are formed in the upper end of the groove 91, a plurality of positioning columns 94 and positioning columns 94 which are circularly arranged are fixedly connected to the edge of the lower end of the limiting plate 95 at equal intervals and are positioned inside the positioning holes 92, and specifically, the piston part 9 and the limiting plate 95 are positioned and installed through the positioning holes 92 and the positioning columns 94.

The lower end of the positioning column 94 is provided with a semicircular head, and particularly, the positioning column 94 can be conveniently inserted into the positioning hole 92 through the semicircular head.

In the concrete implementation mode, one end of the connecting pipe 6, which is provided with the limiting ring 53, is inserted into the cover body 51 of the auxiliary pipe 5, and then the clamp spring 52 is assembled on the clamping groove through a tool, so that the connecting pipe 6 and the auxiliary pipe 5 are quickly communicated and installed, and further the barrel 2 is respectively communicated and installed with the pump cavity and the recovery cavity through the two connecting pipes 6 and the two auxiliary pipes 5, and the auxiliary pipe 5 can only flow in one direction through the one-way valve 4 on the auxiliary pipe 5, in the process of conveying the water-feeding pump to the boiler, firstly, a circuit of the servo electric cylinder 1 is switched on, then, the servo electric cylinder 1 is started through a control switch, the servo electric cylinder 1 drives the piston member 9 to circularly move up and down along the inner wall of the barrel 2, when the piston member 9 moves up, negative pressure can be generated in the barrel 2, and under the action of the negative pressure, air and steam in the pump cavity of the water-feeding pump can enter the barrel 2 along the connecting When the piston piece 9 moves downwards, air and steam in the cylinder 2 can enter the recovery mechanism along the connecting pipe 6 communicated with the recovery cavity and the corresponding auxiliary pipe 5, so that the mechanical continuous exhaust work of the water feeding pump is realized, the use is convenient, and the safety is high.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An exhaust apparatus of a boiler feed water pump, characterized in that: including servo electronic jar (1), barrel (2), fixed disk (3), check valve (4), auxiliary tube (5), connecting pipe (6), annular sealing pad (7), solid fixed cylinder (8) and piston spare (9), two auxiliary tube (5) of fixed disk (3) lower extreme symmetry fixed connection and auxiliary tube (5) extend to fixed disk (3) upper end, two all set up check valve (4) on auxiliary tube (5), two auxiliary tube (5) lower extreme intercommunication sets up two connecting pipe (6) that are used for respectively with and retrieve the chamber intercommunication, fixed disk (3) upper end intermediate position fixed connection solid fixed cylinder (8) and solid fixed cylinder (8) inside sets up two connecting pipe (6), solid fixed cylinder (8) upper end threaded connection barrel (2) and extend into inside barrel (2), it seals annular sealing pad (7) and annular sealing pad (7) suit at solid fixed cylinder to set up annular sealing pad (7) between barrel (2) and fixed disk (3) (8) The outer end, inside sliding connection piston spare (9) of barrel (2) and piston spare (9) are in fixed section of thick bamboo (8) upside, the cylinder body of barrel (2) upper end intermediate position fixed connection servo electronic jar (1), the expansion end of servo electronic jar (1) runs through barrel (2) and is connected with piston spare (9).

2. An exhaust apparatus of a boiler feed water pump according to claim 1, characterized in that: barrel (2) upper end intermediate position intercommunication sets up auxiliary cylinder (11) and fixes the cylinder body lower extreme at servo electronic jar (1), the expansion end of servo electronic jar (1) runs through auxiliary cylinder (11), auxiliary cylinder (11) downside annular end fixed connection mounting disc (12) and mounting disc (12) laminating set up in barrel (2) upper end, and auxiliary cylinder (11) are integrated structure with mounting disc (12), barrel (2) inside top equidistance sets up and is a plurality of construction bolt (13) and construction bolt (13) of circular arrangement and is in auxiliary cylinder (11) outside, construction bolt (13) pass the mounting panel and the threaded connection fastening nut (15) of barrel (2), mounting disc (12) and servo electronic jar (1).

3. An exhaust apparatus of a boiler feed water pump according to claim 2, characterized in that: a plurality of reinforcing rods (14) and reinforcing rods (14) which are circularly arranged are arranged between the mounting plate of the mounting disc (12) and the mounting plate of the servo electric cylinder (1) at equal intervals and fixed at the upper end of the mounting disc (12), and the reinforcing rods (14) and the mounting bolts (13) are alternately arranged.

4. An exhaust apparatus of a boiler feed water pump according to claim 1, characterized in that: lid (51) and auxiliary tube (5) that auxiliary tube (5) annular end downside edge fixed connection opening arranged down are integrated into one piece structure with lid (51), connecting pipe (6) upper end sets up lid (51) and extends into in lid (51), connecting pipe (6) annular end upside edge fixed connection spacing ring (53) and spacing ring (53) are integrated into one piece structure with connecting pipe (6), spacing ring (53) set up on the inside top of lid (51), the draw-in groove is seted up to lid (51) downside annular inner wall, assembly jump ring (52) and jump ring (52) are in spacing ring (53) lower extreme on the draw-in groove.

5. The exhaust apparatus of a boiler feed water pump according to claim 4, characterized in that: an annular sealing groove is formed in the annular end of the limiting ring (53), and a sealing ring (54) is assembled on the annular sealing groove.

6. An exhaust apparatus of a boiler feed water pump according to claim 1, characterized in that: through-hole (93) are seted up to piston spare (9) upper end intermediate position, through-hole (93) lower extreme sets up recess (91) and sets up in piston spare (9) lower extreme intermediate position, expansion end downside annular end fixed connection limiting plate (95) and limiting plate (95) of servo electric jar (1) are in piston spare (9) upper end, the expansion end of servo electric jar (1) runs through-hole (93) and recess (91), the expansion end downside annular end threaded connection spacing dish (96) of servo electric jar (1), spacing dish (96) upper end sets up recess (91), and spacing dish (96) extend into inside and with the laminating of the inside top of recess (91).

7. An exhaust apparatus of a boiler feed water pump according to claim 6, characterized in that: piston spare (9) upper end intermediate position equidistance is seted up and is a plurality of locating hole (92) and locating hole (92) of circular arrangement and is in the through-hole (93) outside, recess (91) upper end sets up a plurality of locating hole (92), limiting plate (95) lower extreme border position equidistance fixed connection is a plurality of reference column (94) of circular arrangement and reference column (94) and is in inside locating hole (92).

8. An exhaust apparatus of a boiler feed water pump according to claim 7, characterized in that: the lower end of the positioning column (94) is provided with a semicircular head.