CN214837030U

CN214837030U - Plunger diaphragm pump of stable performance

Info

Publication number: CN214837030U
Application number: CN202121403441.8U
Authority: CN
Inventors: 傅锟
Original assignee: Tianjin Najia Machinery Manufacturing Co ltd
Current assignee: Tianjin Najia Machinery Manufacturing Co ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2021-11-23
Anticipated expiration: 2031-06-23

Abstract

The utility model relates to a diaphragm pump technical field especially relates to a plunger diaphragm pump of stable performance, it includes the pump case, pump shaft and eccentric shaft assembly, the pump case has the bottom for awl tubular structure and bottom integrated into one piece, the bearing frame mounting hole has been seted up at the bottom middle part, the oil groove is crossed along radially having seted up a plurality of bottoms to the bottom internal surface, it crosses the oil groove to have seted up a plurality of section of thick bamboo walls on the inner wall of pump case, the sealed bearing frame that has clamped of bearing frame mounting hole department, install first bearing in the bearing frame, the eccentric shaft assembly is located middle part in the pump case, the pump shaft passes the bearing frame mounting hole with first bearing cooperation and one end, the other end is connected with the eccentric shaft assembly. The device provided by the utility model simple structure can guarantee the stable life who reaches extension equipment of the working property of pump.

Description

Plunger diaphragm pump of stable performance

Technical Field

The utility model relates to a diaphragm pump technical field especially relates to a plunger diaphragm pump of stable performance.

Background

The diaphragm pump mainly separates liquid to be conveyed out from mechanical parts such as a plunger bearing gear and the like at the rear end of the diaphragm through the diaphragm, and can convey liquid containing solid particles. However, when the pump shaft and the bearing of the existing diaphragm pump rotate at high speed, the lubricating oil is thrown out towards the plunger assembly under the action of centrifugal force, and then vacuum occurs at the bearing part at the lower part of the pump shell, the lubricating oil does not enter the bearing at the lower part of the bearing, so that the lower bearing becomes dry grinding, the bearing position is lack of oil, the lubricating and heat exchange effects are lost, the bearing can be quickly scalded, annealed and reduced in rigidity, and the working performance and the service life of the pump are affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a simple structure is provided, working property and increase of service life's a stable performance's plunger diaphragm pump of pump can be guaranteed.

The utility model discloses a realize through following technical scheme:

the utility model provides a plunger diaphragm pump of stable performance, its includes pump case, pump shaft and eccentric shaft assembly, the pump case is awl cylindric structure and bottom integrated into one piece has the bottom, bearing frame mounting hole has been seted up at the bottom middle part, and the bottom internal surface has seted up a plurality of bottoms along radial and has crossed the oil groove, has seted up a plurality of section of thick bamboo walls on the inner wall of pump case and has crossed the oil groove, the sealed bearing frame that clamps of bearing frame mounting hole department, install first bearing in the bearing frame, the eccentric shaft assembly is located the pump case middle part, the pump shaft passes the bearing frame mounting hole with first bearing cooperation and one end, and the other end is connected with the eccentric shaft assembly.

Furthermore, a plurality of the oil groove is crossed to the bottom cover with a plurality of section of thick bamboo wall cross the oil groove and correspond to each other and communicate.

Optimally, the width of the bottom cover oil passing groove and the cylinder wall oil passing groove is 5-150mm, the depth is 5-150mm, and the cross section area is 25mm²To 22500mm²。

Further, the eccentric shaft assembly comprises an eccentric inner sleeve sleeved with the pump shaft and an eccentric outer disc sleeved on the eccentric inner sleeve, and a second bearing is arranged between the eccentric inner sleeve and the eccentric outer disc.

The beneficial effects of the utility model

The utility model provides a pair of plunger diaphragm pump of stable performance has following advantage:

1. simple structure and low maintenance cost.

2. The diaphragm pump has stable working performance.

3. The service life of the diaphragm pump is prolonged.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

in the figure, 1, a pump shaft, 2, a first bearing, 3, a cylinder wall oil through groove, 4, an eccentric outer disc, 5, an eccentric inner sleeve, 6, a second bearing, 7, a bottom cover oil through groove, 8, a bottom cover, 9, a bearing seat and 10, a pump shell are arranged.

Detailed Description

The utility model provides a plunger diaphragm pump of stable performance, its includes pump case 10, pump shaft 1 and eccentric shaft assembly, the pump case has bottom 8 for awl cylindric structure and bottom integrated into one piece, bearing frame mounting hole (not shown) has been seted up at the bottom middle part, and a plurality of bottom oil grooves 7 have radially been seted up to the bottom internal surface, has seted up a plurality of section of thick bamboo walls on the inner wall of pump case and has crossed oil groove 3, bearing frame 9 has been clamped to bearing frame mounting hole department sealed, installs first bearing 2 in the bearing frame, the eccentric shaft assembly is located the pump case middle part, the pump shaft passes the bearing frame mounting hole with first bearing cooperation and one end, and the other end is connected with the eccentric shaft assembly.

Furthermore, a plurality of the oil groove is crossed to the bottom cover and a plurality of the section of thick bamboo wall crosses the oil groove and corresponds each other and communicate, makes things convenient for the flow of lubricating oil, realizes the lubrication and the heat transfer to each drive disk assembly.

Optimally, the width of the bottom cover oil passing groove and the cylinder wall oil passing groove is 5-150mm, the depth is 5-150mm, and the cross section area is 25mm²To 22500mm²The intensity of pump case can be guaranteed, a certain amount of lubricating oil can be guaranteed to cross the oil sump storage again to guarantee lubricated and heat transfer effect.

Further, the eccentric shaft assembly comprises an eccentric inner sleeve 5 sleeved with the pump shaft and an eccentric outer disc 4 sleeved on the eccentric inner sleeve, a second bearing 6 is arranged between the eccentric inner sleeve and the eccentric outer disc, the power of the pump shaft is transmitted through the second bearing to drive the eccentric outer disc to rotate, the pump shaft is driven to rotate through a motor to drive the eccentric outer disc to rotate, and therefore plungers at different positions above the eccentric outer disc are driven to reciprocate up and down in succession to achieve liquid conveying.

The utility model discloses a plunger diaphragm pump of stable performance, the plunger assembly of diaphragm pump is located in the pump case upper portion by a plurality of plungers of eccentric shaft assembly drive plunger assembly along corresponding plunger cylinder reciprocating motion in succession, the lower extreme of plunger assembly is equipped with universal head, when plunger diaphragm pump during operation, the pump shaft rotates, drive eccentric outer dish pivoted in-process, eccentric outer dish promotes the universal head of a plurality of plunger assembly lower extremes in proper order, make corresponding plunger do work in the plunger cylinder, accomplish the feeding and arrange the material process. The plunger assembly and the diaphragm mounting structure belong to the prior art and are not described in detail.

Because the pump case is a cone-shaped structure and the bottom is integrally formed with a bottom cover, the middle part of the bottom cover is provided with a bearing seat mounting hole, the inner surface of the bottom cover is radially provided with a plurality of bottom cover oil passing grooves, the inner wall of the pump case is provided with a plurality of cylinder wall oil passing groove bearing seat mounting holes which are sealed and clamped with bearing seats, the bearing seats are internally provided with first bearings, the pump shaft is matched with the first bearings, one end of the pump shaft passes through the bearing seat mounting holes, and the other end of the pump shaft is connected with the eccentric shaft assembly through second bearings, when the pump shaft and the eccentric shaft assembly are driven by the bearings to rotate at high speed, generally 300 revolutions per minute, the lubricating oil in the pump case can be thrown out towards the plunger assembly under the action of centrifugal force, and then vacuum is generated at the lower part of the pump case, so that the lubricating oil stored in the plurality of bottom cover oil passing grooves and the cylinder wall oil passing grooves is sucked into the corresponding bearings, and the convection of the lubricating oil is formed, thereby realize lubricated and heat transfer effect, avoid the bearing to send out to scald, anneal and rigidity descends, improved the life of equipment, reduced cost of maintenance to the stability of diaphragm pump working property has been guaranteed.

To sum up, the utility model provides a pair of plunger diaphragm pump of stable performance, simple structure can guarantee the stable and life who prolongs equipment of the working property of pump.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a plunger diaphragm pump of stable performance, characterized by: the pump shell is of a conical barrel-shaped structure, a bottom cover is integrally formed at the bottom of the pump shell, a bearing seat mounting hole is formed in the middle of the bottom cover, a plurality of bottom cover oil passing grooves are formed in the inner surface of the bottom cover along the radial direction, a plurality of barrel wall oil passing grooves are formed in the inner wall of the pump shell, a bearing seat is clamped in the bearing seat mounting hole in a sealing mode, a first bearing is mounted in the bearing seat, the eccentric shaft assembly is located in the middle of the pump shell, the pump shaft is matched with the first bearing, one end of the pump shaft penetrates through the bearing seat mounting hole, and the other end of the pump shaft is connected with the eccentric shaft assembly.

2. The plunger diaphragm pump of claim 1 wherein said plurality of bottom cover oil passing grooves and said plurality of barrel wall oil passing grooves correspond to and communicate with each other.

3. The plunger diaphragm pump of claim 2 wherein the bottom cover oil trough and the barrel wall oil trough have a width of 5-150mm, a depth of 5-150mm and a cross-sectional area of 25mm²To 22500mm²。

4. The plunger diaphragm pump of claim 1 wherein said eccentric shaft assembly comprises an eccentric inner sleeve sleeved with said pump shaft and an eccentric outer disc sleeved on said eccentric inner sleeve, said eccentric inner sleeve and said eccentric outer disc having a second bearing mounted therebetween.