CN208564946U - A kind of plunger sealing structure - Google Patents

Abstract

The utility model discloses a kind of plunger sealing structures of flush coater technical field, including plunger rod, plunger holder assembly is socketed on the plunger rod outer wall, the plunger holder assembly includes plunger mat and plunger mat guide sleeve, the plunger mat is socketed on the outer wall of plunger rod, plunger mat guide sleeve is provided on the outside of the plunger mat, wool felt is socketed on plunger rod outer wall on the right side of the plunger mat, the inside of plunger mat guide sleeve is arranged in the wool felt, the right end of the plunger holder assembly is connected with Sealing Ring in Plunger Pumps, the Sealing Ring in Plunger Pumps right end is provided with plunger bushing guide sleeve, the plunger bushing guide sleeve is socketed in plunger rod right end position.The utility model is designed reasonably, the present apparatus simplifies entire sealing structure, easy for installation, guiding distance is elongated in structure, make its plunger at work uneven wear the case where greatly reduce, sealing element uses ultra high molecular polyethylene, and structure is to substantially increase sealing life using the more lips of monoblock type.

Description

A kind of plunger sealing structure

Technical field

The utility model discloses a kind of plunger sealing structures, specially flush coater technical field.

Background technique

Flush coater is the Special coating equipment using spraying technology, and principle is control air-flow moment to push distribution reversing arrangement Commutation, so that the piston of air motor be made to make the reciprocating motion of steady and continuous, two check valve opening and closings of the pump housing cooperate, by the pump housing The intracavitary liquid of type pressurizes, then by the way that fluid under pressure is transported to output end with two check valves synergistic effect, therefore its column The sealing performance of plug is most important, and existing flush coater plunger sealing structure mainly uses V-type sealing cowleather ring to add combination retaining ring Upper and lower combined sealing structure, the plunger rod of such sealing structure only have single guiding, when work sealing ring can uneven wear, and do not have Wool felt contains oil lubrication, and sealing life is short, and assembling structure is more complex, is to combine retaining rings using double there are also a kind of sealing structure, The unilateral grinding of the plunger rod of this kind of structure is smaller, but two combination retaining rings need to be mounted on plunger pad, and plunger pad refills To pump body, this structure pump housing inner seal is more stable, by the O-ring sealing on the outside of plunger pad on the outside of the pump housing, when installation It is easy to rack, such as have damage, can be broken through under high-pressure situations, and due to combination retaining ring structure limitation, seal lip is few, work Middle attrition is fast, and sealing life is short.For this purpose, we have proposed a kind of plunger sealing structures to come into operation, to solve above-mentioned ask Topic.

Utility model content

The purpose of this utility model is to provide a kind of plunger sealing structures, to solve mentioned above in the background art ask Topic.

To achieve the above object, the utility model provides the following technical solutions: a kind of plunger sealing structure, including plunger Bar is socketed with plunger holder assembly on the plunger rod outer wall, and the plunger holder assembly includes plunger mat and plunger mat guide sleeve, institute It states plunger mat to be socketed on the outer wall of plunger rod, plunger mat guide sleeve is provided on the outside of the plunger mat, the plunger mat is right Wool felt is socketed on the plunger rod outer wall of side, the inside of plunger mat guide sleeve, the plunger mat group is arranged in the wool felt The right end of part is connected with Sealing Ring in Plunger Pumps, and the Sealing Ring in Plunger Pumps right end is provided with plunger bushing guide sleeve, the plunger bushing Guide sleeve is socketed in plunger rod right end position, and there are two O-ring seal, the plungers for the outer ring setting of the Sealing Ring in Plunger Pumps Lip-type packing is provided on the inside of pump gland.

Preferably, sealing ring pressure pad is provided between the wool felt and Sealing Ring in Plunger Pumps.

Preferably, O-ring seal is also equipped on the plunger mat guide sleeve outer wall.

Preferably, the O-ring seal is made of fluorubber material.

Preferably, the plunger rod is made of 9Cr18 stainless steel material.

Compared with prior art, the utility model has the beneficial effects that the plunger assembly of the present apparatus is cylinder, work When, plunger rod pumps, and two check valve opening and closing cooperations of the pump housing, the intracavitary liquid of pump housing type is pressurizeed, then By the way that fluid under pressure is transported to output end with two check valves synergistic effect, the sealing performance of plunger is most important, by Two O-ring seals are arranged in the outer ring of Sealing Ring in Plunger Pumps, and lip-type packing is arranged in the inside of Sealing Ring in Plunger Pumps, this is close Seal structure sealing effect is good, which is twice or so of similar flush coater sealing life on the market, and can be with pressure The increase of power automatically improves seal degree, and the present apparatus simplifies entire sealing structure, easy for installation, and distance will be oriented in structure Elongate, make its plunger at work uneven wear the case where greatly reduce.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of the utility model plunger holder assembly.

In figure: 1- plunger rod；2- plunger holder assembly；3- plunger mat；4- plunger mat guide sleeve；5- wool felt；6- plunger pump Sealing ring；7- plunger bushing guide sleeve；8-O type sealing ring；9- lip-type packing；10- sealing ring pressure pad.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The utility model provides a kind of technical solution referring to FIG. 1-2: a kind of plunger sealing structure, including plunger rod 1, Plunger holder assembly 2 is socketed on 1 outer wall of plunger rod, the plunger holder assembly 2 includes plunger mat 3 and plunger mat guide sleeve 4, The plunger mat 3 is socketed on the outer wall of plunger rod 1, and the outside of the plunger mat 3 is provided with plunger mat guide sleeve 4, the column It is socketed with wool felt 5 on 1 outer wall of plunger rod on 3 right side of obturating plug, the inside of plunger mat guide sleeve 4, institute is arranged in the wool felt 5 The right end for stating plunger holder assembly 2 is connected with Sealing Ring in Plunger Pumps 6, and 6 right end of Sealing Ring in Plunger Pumps is provided with plunger bushing guiding Set 7, the plunger bushing guide sleeve 7 are socketed in 1 right end position of plunger rod, and there are two O for the outer ring setting of the Sealing Ring in Plunger Pumps 6 Type sealing ring 8, the inside of the Sealing Ring in Plunger Pumps 6 are provided with lip-type packing 9, the wool felt 5 and Sealing Ring in Plunger Pumps 6 Between be provided with sealing ring pressure pad 10, prevent oil leak, be also equipped with O-ring seal 8, institute on 4 outer wall of plunger mat guide sleeve It states O-ring seal 8 to be made of fluorubber material, there is excellent high temperature resistance, the plunger rod 1 is stainless using 9Cr18 Steel material is made, and has high rigidity, high-wearing feature and corrosion resistance.

Working principle: the plunger assembly of the present apparatus is cylinder, and when work, plunger rod 1 pumps, and the pump housing two A check valve opening and closing cooperation, the intracavitary liquid of pump housing type is pressurizeed, then by that will pressurize with two check valve synergistic effects Liquid is transported to output end, and the sealing performance of plunger is most important, by O-shaped in the outer ring of Sealing Ring in Plunger Pumps 6 setting two Sealing ring 8, and lip-type packing 9 is set in the inside of Sealing Ring in Plunger Pumps 6, this sealing structure sealing effect is good, the sealing knot The structure service life is twice or so of similar flush coater sealing life on the market, and can automatically improve sealing journey with the increase of pressure Degree, the present apparatus simplifies entire sealing structure, easy for installation, elongates guiding distance in structure, keeps its plunger single at work The case where side is worn greatly reduces.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of plunger sealing structure, including plunger rod (1), it is characterised in that: be socketed with plunger on plunger rod (1) outer wall Holder assembly (2), the plunger holder assembly (2) include plunger mat (3) and plunger mat guide sleeve (4), and the plunger mat (3) is socketed in It on the outer wall of plunger rod (1), is provided with plunger mat guide sleeve (4) on the outside of the plunger mat (3), on the right side of the plunger mat (3) Plunger rod (1) outer wall on be socketed with wool felt (5), the wool felt (5) is arranged in the inside of plunger mat guide sleeve (4), institute The right end for stating plunger holder assembly (2) is connected with Sealing Ring in Plunger Pumps (6), and Sealing Ring in Plunger Pumps (6) right end is provided with plunger It covers guide sleeve (7), the plunger bushing guide sleeve (7) is socketed in plunger rod (1) right end position, the Sealing Ring in Plunger Pumps (6) There are two outer ring settings O-ring seal (8), is provided with lip-type packing (9) on the inside of the Sealing Ring in Plunger Pumps (6).

2. a kind of plunger sealing structure according to claim 1, it is characterised in that: the wool felt (5) and plunger pump are close Sealing ring pressure pad (10) are provided between seal (6).

3. a kind of plunger sealing structure according to claim 1, it is characterised in that: plunger mat guide sleeve (4) outer wall On be also equipped with O-ring seal (8).

4. a kind of plunger sealing structure according to claim 3, it is characterised in that: the O-ring seal (8) uses fluorine rubber Glue material is made.

5. a kind of plunger sealing structure according to claim 1, it is characterised in that: the plunger rod (1) uses 9Cr18 not Rust Steel material is made.