CN216429918U

CN216429918U - A plunger pump seal structure for high salt high corrosive medium

Info

Publication number: CN216429918U
Application number: CN202123166390.4U
Authority: CN
Inventors: 王靖; 肖玉林
Original assignee: Zhejiang Danong Machinery Co ltd
Current assignee: Zhejiang Danong Machinery Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-05-03
Anticipated expiration: 2031-12-16

Abstract

A plunger pump sealing structure for high-salt and high-corrosion media belongs to the technical field of plunger pumps and comprises a crankshaft connecting rod assembly, wherein a partition plate is sleeved on a sliding end of the crankshaft connecting rod assembly; the partition plate part comprises a partition plate body, a through groove used for being matched with the crankshaft connecting rod assembly is arranged on the partition plate body in a penetrating mode, a functional hole used for filling lubricating oil is formed in the upper end face of the partition plate body, the functional hole is communicated with the through groove, a drainage channel is arranged on the lower side of the through groove, at least one end of the drainage channel penetrates through the partition plate body, a drainage branch pipe is arranged on the drainage channel in a communicating mode, and the drainage branch pipe is communicated with the through groove; the utility model has the advantages that the leaked medium is guided away by the partition plate, the purpose of controllable leakage is realized, and the service life of the plunger pump is prolonged when the plunger pump is used for conveying high-salt and high-corrosion medium; furthermore, the utility model also discloses an use this seal structure's plunger pump.

Description

A plunger pump seal structure for high salt high corrosive medium

Technical Field

The utility model belongs to the technical field of the plunger pump, in particular to a plunger pump seal structure for high salt high corrosive medium.

Background

Plunger pumps are an important device in fluid pressurization systems. The volume of the sealed working cavity is changed by means of reciprocating motion of the plunger in the cylinder body, so that the pumping action of a conveying medium is realized, and the liquid conveying and pressurization are realized by matching with a flow distribution mechanism. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency, convenient flow regulation and the like, and is widely applied to occasions where high pressure, large flow and flow need to be regulated, such as seawater desalination, landfill leachate treatment, high-pressure and ultrahigh-pressure cleaning equipment and other systems.

A high-pressure plunger pump for high salt high corrosion operating mode can appear sealed vice condition of leaking working medium because sealed life-span problem, and when working medium was high salt or high corrosion operating mode, the medium of leaking can be attached to on each spare part unavoidably, can destroy the sealed effect of cross head or reciprocal oil blanket after the crystallization thing is appeared, and the medium of leaking also can cause the pollution to the job site in addition, damages other parts.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plunger pump seal structure for high salt high corrosive medium to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a plunger pump sealing structure for high-salt and high-corrosion media comprises a cylinder body and a crankcase, wherein a crankshaft connecting rod assembly is movably arranged in the crankcase, a partition plate is sleeved at the sliding end of the crankshaft connecting rod assembly, and the cylinder body, the partition plate and the crankcase are fixedly connected in sequence through bolts; the partition plate comprises a partition plate body, a through groove matched with the crankshaft connecting rod assembly is arranged on the partition plate body in a penetrating mode, functional holes used for filling lubricating oil are formed in the upper end face of the partition plate body, the functional holes are communicated with the through groove, a drainage channel is arranged on the lower side of the through groove, at least one end of the drainage channel penetrates through the partition plate body, a drainage branch pipe is arranged on the drainage channel in a communicating mode, the drainage branch pipe is communicated with the through groove, the drainage channel is obliquely arranged inside the partition plate body, and the oblique low end of the drainage channel penetrates through the partition plate body.

Compared with the prior art, the technical scheme has the following effects:

1) traditional plunger pump seal structure, under work for a long time and being used for the high corrosive medium environment of high salt, the sealing member in traditional seal structure is corroded the back, and the medium of revealing can directly leak outward, and the utility model discloses in through setting up the medium drainage that the partition plate spare will reveal away, realize revealing controllable purpose.

2) The utility model discloses a baffle spare simple structure, reasonable in design through drainage channel, the combined action that runs through groove, functional hole, improves the life of plunger pump when carrying high salt high corrosion medium, can effectively prevent that the medium from leaking simultaneously.

Preferably, an assembly block for dividing the through groove into two areas is arranged in the through groove, and a communication hole for communicating the two areas is arranged on the assembly block in a penetrating manner.

Preferably, the crankshaft connecting rod assembly comprises a crankshaft, a plurality of piston connecting rod assemblies are hinged to the crankshaft at uniform intervals, a supporting ring sleeve, a cloth clamping main water seal piece and a spring are sequentially arranged on the piston connecting rod assemblies, one end of the spring is arranged on the cloth clamping main water seal piece, and the other end of the cloth clamping main water seal piece abuts against the supporting ring sleeve.

Preferably, the piston connecting rod assembly is further provided with an auxiliary water seal part, and the auxiliary water seal part and the cloth clamping main water seal part are respectively arranged on two sides of the partition plate body.

Preferably, the piston and connecting rod assembly comprises a piston connecting rod hinged to the crankshaft, the other end of the piston connecting rod is hinged to a connecting rod, an oil seal pressing sleeve is sleeved on a rod body of the connecting rod and sleeved with the auxiliary water seal, and the supporting ring sleeve, the cloth clamping main water seal and the spring are all sleeved on the connecting rod, wherein the supporting ring sleeve is in clearance fit with the auxiliary water seal, and the supporting ring sleeve and the auxiliary water seal are all inserted into the through groove.

Preferably, the end face, facing the supporting ring sleeve, of the auxiliary water sealing part is sleeved with a felt, the felt is contained in the through groove when the device works, and the oil outlet end of the functional hole is located right above the felt.

Drawings

FIG. 1 is a schematic view of the overall structure of the plunger pump of the present invention;

FIG. 2 is an exploded view of the plunger pump structure of the present invention;

FIG. 3 is a schematic structural view of a crankshaft connecting rod assembly according to the present invention;

FIG. 4 is a schematic structural view of a partition plate according to the present invention;

fig. 5 is a schematic structural view of the middle crankcase of the present invention.

In the figure: 1-end cap; 2-a drive shaft; 3-a partition member; 30-a separator body; 31-through slots; 32-a drainage channel; 33-a functional pore; 4-cylinder body; 5-pump head pressure plate; 6, a dustproof cover; 7-an oil filling pipe; 8-a breather plug assembly; 9-crankshaft connecting rod assembly; 90-oil sealing and pressing the sleeve; 91-supporting a ring sleeve; 92-clamping the main water seal piece; 93-a spring; 94-a connecting rod; 95-piston rod; 96-crankshaft; 10-a crankcase; 100-a movable cavity; 101-installing a channel; 102-a leakage channel; 11-secondary water seal; 12-felt; 13-assembling the block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clear and fully described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example (b):

the plunger pump for high-salt and high-corrosion media as shown in fig. 1 sequentially comprises a cylinder body 4, a partition plate 3 and a crankcase 10 according to the output direction of the operation of the plunger pump, wherein the crankcase 10 and the cylinder body 4 are connected with each other through the partition plate 3, and a crankshaft connecting rod assembly 9 is movably arranged in the crankcase 10; the driving end of the crankshaft connecting rod assembly 9 is connected with the driving shaft 2 in a power mode, in this embodiment, the cylinder block 4 is connected with the pump head pressing plate 5 through bolts, the pump head pressing plate 5 is provided with a one-way valve, and the one-way valve is accommodated in the cylinder block 4, as can be seen from fig. 2.

It is worth mentioning that, for the purpose of guiding away the leaking medium, for leakage control, the partition plate member 3 comprises a partition plate body 30, the clapboard main body 30 is provided with a through groove 31 which is used for matching with the crankshaft connecting rod component 9, and the upper end surface of the clapboard body 30 is provided with a functional hole 33 for filling lubricating oil, the functional hole 33 is communicated with the through groove 31, a drainage channel 32 is arranged at the lower side of the through groove 31, at least one end of the drainage channel 32 penetrates through the clapboard body 30, in this embodiment, the drainage channel 32 is obliquely disposed inside the separator body 30, and the inclined lower end (as can be seen from fig. 4, that is, one end of the drainage channel 32 close to the lower end surface of the partition body 30) penetrates through the partition body 30, and a drainage branch pipe is communicated with the drainage channel 32 and communicated with the through groove 31; the lower end of the branch drainage pipe extends downwards to the lower end face of the partition board body 30, but in the actual working process, the lower end of the branch drainage pipe is sealed by adopting a plug or welding, and the purpose of penetrating through the lower end face of the partition board body 30 is to reduce the manufacturing difficulty.

In addition, the circumference of the through groove 31 is provided with bolt holes, which is convenient for the stability during installation, secondly, the through groove 31 is internally provided with an assembly block 13 which divides the through groove 31 into two areas, the assembly block 13 is provided with a communication hole for communicating the two areas in a penetrating way, so that the leaked medium can be blocked at the front end of the crankshaft connecting rod assembly 9 conveniently, and meanwhile, the upper end of the drainage branch pipe is positioned at one side of the assembly block 13 facing the cylinder 4.

Secondly, as can be seen from fig. 3, the crankshaft connecting rod assembly 9 includes a crankshaft 96, a plurality of piston connecting rod assemblies are hinged on the crankshaft 96 at uniform intervals, a supporting ring sleeve 91, a cloth clamping main water seal 92 and a spring 93 are sequentially arranged on the piston connecting rod assemblies, one end of the spring 93 is arranged on the cloth clamping main water seal 92, and the other end of the cloth clamping main water seal 92 abuts against the supporting ring sleeve 91; in this embodiment, still be equipped with vice water seal 11 on the piston link assembly, vice water seal 11 with press from both sides the main water seal 92 branch of cloth and locate baffle body 30's both sides, to traditional plunger pump, the main water seal 92 of clamp cloth that is located the front end is inefficacy under the effect of high salt high corrosion medium, and this thing, the medium takes place to leak, leads to appearing the medium and leaks to crankshaft link assembly 9's power end, causes the damage of other parts, and the utility model discloses in through addding vice water seal 11, and this vice water seal 11 is for wear-resistant material, effectively solves this problem.

In this embodiment, the piston link assembly includes a piston link rod 95 hinged to the crankshaft 96, the other end of the piston link rod 95 is hinged to a connecting rod 94, an oil seal pressing sleeve 90 is sleeved on a rod body of the connecting rod 94, the oil seal pressing sleeve 90 is sleeved with the auxiliary water seal 11, and the support ring sleeve 91, the cloth clamping main water seal 92 and the spring 93 are all sleeved on the connecting rod 94, wherein the support ring sleeve 91 is in clearance fit with the auxiliary water seal 11, and the support ring sleeve 91 and the auxiliary water seal 11 are all inserted into the through groove 31.

Meanwhile, the felt 12 is sleeved on the end surface of the auxiliary water seal 11 facing the support ring sleeve 91, when the device works, the felt 12 is accommodated in the through groove 31, the oil outlet end of the functional hole 33 is positioned right above the felt 12 and serves as a lubricating oil supplementing channel, in addition, the auxiliary water seal 11 can be lubricated, and the service life of the auxiliary water seal 11 is ensured.

In this embodiment, the rear end of the crankcase 10 is recessed inwards to form a movable cavity 100, an opening of the movable cavity 100 is fixed with an end cover 1 through a bolt, an oil filling pipe 7 is arranged on the end cover 1, the oil filling pipe 7 is communicated with the movable cavity 100, a ventilating oil plug assembly 8 is connected to the oil filling pipe 7 in a threaded manner, an installation passage 101 matched with the piston connecting rod assembly is arranged in the crankcase 10, the installation passage 101 is communicated with the movable cavity 100, a leakage passage 102 is vertically arranged at a position, close to the front end, of the crankcase 10, the leakage passage 102 penetrates through the crankcase 10 from top to bottom and is communicated with the installation passage 101, a dust cover 6 is inserted into the upper end of the leakage passage 102, dust in a working environment is prevented from falling into equipment, and the dust cover is prevented from falling into the equipment and damaged, and a leakage cover is inserted into the lower end of the leakage passage.

In the description of the present invention, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. 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 invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.

The present invention has been described in terms of embodiments, and a number of variations and improvements can be made without departing from the present principles. It should be noted that all the technical solutions obtained by means of equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A plunger pump sealing structure for high-salt and high-corrosion media comprises a cylinder body (4) and a crankcase (10), wherein a crankshaft connecting rod assembly (9) is movably arranged in the crankcase (10), a partition plate (3) is sleeved at the sliding end of the crankshaft connecting rod assembly (9), and the cylinder body (4), the partition plate (3) and the crankcase (10) are fixedly connected in sequence through bolts; the method is characterized in that: the partition plate piece (3) comprises a partition plate body (30), a through groove (31) matched with the crankshaft connecting rod assembly (9) is arranged on the partition plate body (30) in a penetrating mode, a functional hole (33) used for filling lubricating oil is formed in the upper end face of the partition plate body (30), the functional hole (33) is communicated with the through groove (31), a drainage channel (32) is arranged on the lower side of the through groove (31), at least one end of the drainage channel (32) penetrates through the partition plate body (30), a drainage branch pipe is arranged on the drainage channel (32) in a communicating mode, the drainage branch pipe is communicated with the through groove (31), the drainage channel (32) is obliquely arranged inside the partition plate body (30), and the oblique low end of the drainage branch pipe penetrates through the partition plate body (30).

2. The plunger pump sealing structure for high-salt and high-corrosion medium according to claim 1, wherein: the assembly block (13) which divides the through groove (31) into two areas is arranged in the through groove (31), and a communication hole which is used for communicating the two areas is arranged on the assembly block (13) in a penetrating mode.

3. A plunger pump sealing structure for high-salt and high-corrosion medium according to claim 1 or 2, characterized in that: crankshaft connecting rod subassembly (9) are including bent axle (96), it has a plurality of piston connecting rod subassemblies to articulate at even interval on bent axle (96), be equipped with support ring cover section of thick bamboo (91), press from both sides cloth owner water seal spare (92) and spring (93) on the piston connecting rod subassembly in proper order, just the one end of spring (93) is located press from both sides cloth owner water seal spare (92) on, press from both sides the other end butt of cloth owner water seal spare (92) in on support ring cover section of thick bamboo (91).

4. A plunger pump sealing structure for high-salt and high-corrosion medium according to claim 3, characterized in that: and an auxiliary water seal part (11) is further arranged on the piston connecting rod assembly, and the auxiliary water seal part (11) and the cloth clamping main water seal part (92) are respectively arranged at two sides of the partition plate body (30).

5. The plunger pump sealing structure for high-salt and high-corrosion medium according to claim 4, wherein: the piston connecting rod assembly comprises a piston connecting rod (95) hinged to the crankshaft (96), the other end of the piston connecting rod (95) is hinged to a connecting rod (94), an oil seal pressing sleeve (90) is sleeved on a rod body of the connecting rod (94), the oil seal pressing sleeve (90) is connected with the auxiliary water seal piece (11) in a sleeved mode, the supporting ring sleeve (91), the cloth clamping main water seal piece (92) and the spring (93) are all sleeved on the connecting rod (94), the supporting ring sleeve (91) is in clearance fit with the auxiliary water seal piece (11), and the supporting ring sleeve (91) and the auxiliary water seal piece (11) are all inserted into the through groove (31).

6. The plunger pump sealing structure for high-salt and high-corrosion medium according to claim 5, wherein: the end face, facing the supporting ring sleeve (91), of the auxiliary water seal piece (11) is sleeved with a felt (12), when the device works, the felt (12) is contained in the through groove (31), and the oil outlet end of the functional hole (33) is located right above the felt (12).