CN212055094U

CN212055094U - External oil tank system of hydraulic diaphragm pump hydraulic end

Info

Publication number: CN212055094U
Application number: CN202020851516.8U
Authority: CN
Inventors: 白士莹
Original assignee: Shenyang Double Ring Pump Co ltd
Current assignee: Shenyang Double Ring Pump Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-12-01
Anticipated expiration: 2030-05-20

Abstract

The utility model discloses an external oil tank system of hydraulic pressure diaphragm pump fluid end, including pump transmission subassembly and pump fluid end subassembly, pump transmission subassembly includes the transmission box, the outside of transmission box is equipped with the external oil tank system of storing power liquid, external oil tank system passes through pipeline and pump fluid end subassembly intercommunication to the required oil mass of diaphragm chamber in the input diaphragm pump fluid end. The utility model discloses well oil tank box sets up in transmission box's outside, and the routine maintenance of being convenient for washs, because the oil tank box is completely independent, there is not the intercommunication in power liquid and the transmission box in the oil tank box, even the skeleton oil blanket damages, power liquid can not sneak into lubricating oil yet, has avoided lubricating oil to lead to pump drive assembly to damage because of sneak into power liquid viscosity reduction. And the framework oil seal is not immersed in power liquid, and the framework oil seal can be directly observed through the opening at the front end of the transmission case body, so that whether the framework oil seal is damaged or not can be found in time.

Description

External oil tank system of hydraulic diaphragm pump hydraulic end

Technical Field

The utility model relates to a diaphragm pump technical field especially relates to an external oil tank system of hydraulic pressure diaphragm pump fluid end.

Background

Diaphragm pumps are reciprocating pumps in nature, which protect the plunger and its seal by separating the transported medium from the plunger and its seal by means of a diaphragm. The left side of the diaphragm, which is in contact with the liquid, is made of corrosion-resistant materials or coated with a layer of corrosion-resistant substances; the right side of the diaphragm is filled with power liquid.

In the prior art, a hydraulic end of a hydraulic diaphragm pump is usually an internal oil tank, the structure of the internal oil tank is shown in fig. 1, and an oil pool of power fluid is the front end of a transmission box body or a connecting piece between a transmission assembly and a hydraulic end assembly. The part is a connecting rod of the transmission assembly and a connecting operation space of a plunger of the hydraulic end assembly, the space is relatively narrow, and the part is used as an oil pool, so that the daily maintenance and cleaning work is inconvenient. The power liquid in the hydraulic oil tank 7 and the lubricating oil in the lubricating oil tank 5 of the transmission case are isolated by the framework oil seal 6, the oil level of the power liquid is higher than that of the lubricating oil, the viscosity of the power liquid is very low, and the power liquid is easy to flow into the transmission case to mix with the lubricating oil. The framework oil seal of the structure is immersed in power liquid, and whether the framework oil seal is damaged or not is not easy to find out. Because the viscosity of the power fluid is far lower than that of the lubricating oil, when the power fluid is mixed into the lubricating oil, the viscosity of the lubricating oil is reduced, and the lubricating failure and the damage of a transmission component can be caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides an external oil tank system of hydraulic pressure diaphragm pump fluid end aims at solving the diaphragm pump fluid end built-in oil tank system that adopts traditional structure and is not convenient for maintain and the problem of cluster oil between the oil bath. Adopt external oil tank system, the installation of being convenient for can improve equipment daily maintenance efficiency, avoids oil mixing phenomenon to take place between the oil bath simultaneously. The external oil tank system can be applied to a metering pump and a diaphragm process pump.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an external oil tank system at a hydraulic end of a hydraulic diaphragm pump comprises a pump transmission assembly and a pump hydraulic end assembly, wherein the pump transmission assembly comprises a transmission box body, an external oil tank system for storing power liquid is arranged outside the transmission box body, and the external oil tank system is communicated with the pump hydraulic end assembly through a pipeline so as to input the oil quantity required by a diaphragm cavity in the hydraulic end of the diaphragm pump;

the external oil tank system comprises an oil tank body arranged outside the transmission tank body and a tank cover arranged on the oil tank body, and the oil tank body is communicated with the hydraulic end of the diaphragm pump through an oil supplementing pipeline.

As a further description of the above technical solution: and the oil tank body is communicated with a safety valve at the hydraulic end of the diaphragm pump through a safety valve oil return pipeline, and each safety valve oil return branch pipe of the safety valve oil return pipeline is provided with a second impeller sight glass.

As a further description of the above technical solution: the oil tank body is communicated with an exhaust valve at the hydraulic end of the diaphragm pump through an oil discharge pipeline, and a first impeller sight glass is mounted on each pump head oil discharge branch pipe of the oil discharge pipeline.

As a further description of the above technical solution: and the oil supplementing pipeline is provided with a filter and a valve.

As a further description of the above technical solution: the oil tank body is arranged outside the transmission tank body through an oil tank support.

As a further description of the above technical solution: the oil tank is characterized in that a drain outlet and an oil level indicator are installed on the oil tank body, a valve is arranged on the drain outlet, and the height of the oil level in the oil tank can be seen through the oil level indicator.

The utility model discloses external oil tank system's theory of operation as follows:

the theory of operation of hydraulic pressure diaphragm pump fluid end is plunger reciprocating motion, drive the diaphragm through power liquid transmission power, make the diaphragm produce certain amount of deflection deformation, for guaranteeing that diaphragm intracavity oil mass is balanced or keep the diaphragm intracavity to be full of a certain amount of oil, the oil tank needs to provide the oil source for the diaphragm chamber, also can store the oil that the diaphragm chamber was discharged, so the diaphragm chamber communicates through many pipelines with the oil tank, when hydraulic pressure diaphragm pump normally worked, be in a microcirculation state between diaphragm chamber and the oil tank, the oil input and the oil extraction volume of diaphragm chamber keep balance promptly.

The external oil tank system is not only an oil storage tool, but also an essential part for assisting the hydraulic end of the hydraulic diaphragm pump to work normally.

The tank body may be mounted on the transmission body or may be mounted in the vicinity of the pump. The bottom of the oil tank body is provided with a sewage outlet, a valve of the oil tank body is in a normally closed state, and the valve is opened during oil drainage. The trompil that oil tank box and benefit oil pipe way are connected is in the oil tank low position, both is less than in the oil tank standard oil level and is higher than the position of minimum trompil, can not have gas and impurity entering benefit oil pipe way when guaranteeing to mend oil, and benefit oil pipe way valve low reaches moreover and be furnished with the filter, further guarantee not have impurity to enter into the benefit oil pipe way. And the opening of the oil tank body connected with the safety valve oil return pipeline and the oil discharge pipeline can be higher than the standard oil level in the oil tank.

The oil supplementing pipeline is communicated with the diaphragm cavity, a valve of the oil supplementing pipeline is in a normally open state, and when the diaphragm cavity is lack of oil, power liquid flows into the diaphragm cavity through the oil supplementing pipeline. The oil level of the external oil tank is far higher than that of the diaphragm cavity at the hydraulic end, and the larger the oil level difference is, the better the flowability of the power fluid in an oil supplementing pipeline is, and the oil supplementing is facilitated.

When the oil extraction of diaphragm chamber, power liquid can return back the oil tank through the oil extraction pipeline, is furnished with the impeller sight glass on the oil extraction pipeline, and the normal during operation of hydraulic pressure diaphragm pump, every stroke oil extraction volume is very little, and the impeller of impeller sight glass can not rotate, can a large amount of oil extraction when hydraulic pressure diaphragm pump fluid end breaks down, and the impeller of impeller sight glass can rotate, can in time discover the trouble problem of fluid end through the impeller sight glass.

When pump outlet system transships, lead to the relief valve take off a jump, the oil in the diaphragm chamber can return the oil tank through relief valve oil return pipeline, be furnished with the impeller sight glass on the relief valve oil return pipeline, when hydraulic diaphragm pump normal work, the relief valve is in the closed condition, do not have oil and flow back to the oil tank through the relief valve, the impeller of impeller sight glass here can not rotate, when pump outlet system superpressure or relief valve damage, have the impeller sight glass that a large amount of oil flowed through on the relief valve oil return pipeline, the impeller of impeller sight glass can rotate, can in time discover through the impeller sight glass whether pump outlet system transships or whether the relief.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses well oil tank box sets up in transmission box's outside, and the routine maintenance of being convenient for washs, because the oil tank box is completely independent, there is not the intercommunication in power liquid and the transmission box in the oil tank box, even the skeleton oil blanket damages, power liquid can not sneak into lubricating oil yet, has avoided lubricating oil to lead to pump drive assembly to damage because of sneak into power liquid viscosity reduction. And the framework oil seal is not immersed in power liquid, and the framework oil seal can be directly observed through the opening at the front end of the transmission case body, so that whether the framework oil seal is damaged or not can be found in time.

Drawings

FIG. 1 is a schematic view of a conventional internal fuel tank;

fig. 2 is a schematic structural diagram of an external fuel tank system according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an external fuel tank system according to an embodiment of the present invention;

illustration of the drawings: 1. a pump drive assembly; 2. a pump hydraulic end assembly; 3. an external oil tank system; 4. a transmission case body; 5. a transmission case lubricating oil pool; 6. framework oil seal; 7. a hydraulic end hydraulic oil tank; 301. an oil tank body; 302. a box cover; 303. an oil tank bracket; 304. an oil supplementing pipeline; 305. a relief valve return line; 306. an oil discharge pipeline; 307. a sewage draining outlet; 308. an oil level gauge; 309. a first impeller sight glass; 3010. a second impeller sight glass; 3011. and (3) a filter.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 2-3, the present invention provides a technical solution: the utility model provides an external oil tank system of hydraulic pressure diaphragm pump fluid end, includes pump transmission subassembly 1, transmission case 4, transmission case lubricating oil pond 5, skeleton oil blanket 6 and pump fluid end subassembly 2, and the outside of transmission case 4 is equipped with the external oil tank system 3 of storing power liquid, and external oil tank system 3 passes through pipeline and pump fluid end subassembly 2 intercommunication.

The pump transmission assembly 1 is used for converting the rotary motion of a prime motor into the reciprocating motion of a plunger, and lubricating oil is stored in a transmission box body and used for lubricating parts in the transmission assembly. The hydraulic end unit 2 is the main component that withstands the working pressure of the medium being conveyed. The inner part comprises a hydraulic cylinder body, a stuffing box, a plunger, a diaphragm cylinder cover, an inlet and outlet valve group, an inlet and outlet connecting pipe and the like. The external oil tank system 3 is mainly used for storing power liquid and is communicated with the hydraulic end assembly 2 through a pipeline, so that the oil quantity of an inner diaphragm cavity (space between a plunger and a diaphragm) of the hydraulic end of the diaphragm pump is ensured to be normal, and the auxiliary hydraulic end assembly works stably.

Specifically, as shown in fig. 2 and 3, the external oil tank system 3 includes an oil tank 301 disposed outside the transmission tank 4 and a tank cover 302 mounted on the oil tank 301, the oil tank 301 is mounted outside the transmission tank 4 through an oil tank bracket 303, the oil tank 301 is communicated with a diaphragm pump fluid end through an oil supply line 304, the oil tank 301 is used for storing oil, the oil supply line 304 is communicated with a diaphragm chamber, a valve of the oil supply line 304 is in a normally open state, when an oil deficiency occurs in the diaphragm pump fluid end inner diaphragm chamber, power fluid flows into the diaphragm pump fluid end inner diaphragm chamber through the oil supply line 304, an oil level of the oil tank 301 is far higher than an oil level of the diaphragm chamber at the fluid end, for non-forced oil supply but through a self-suction oil supply hydraulic diaphragm pump, the larger oil level difference is, the better fluidity of the power fluid in the oil supply line 304 is better, the oil supply is more helpful for oil supply, an opening of the oil tank 301 connected with the oil supply line 304 is located at a, the oil supplementing device is not only lower than the standard oil level in the oil tank body 301 and higher than the position of the lowest opening hole, so that gas and impurities cannot enter the oil supplementing pipeline 304 during oil supplementing, the filter 3011 is installed on the oil supplementing pipeline 304, it is guaranteed that no impurities enter the oil supplementing pipeline 304, and the joint of the oil supplementing pipeline 304 and the oil tank is provided with the valve and the filter 3011.

Specifically, as shown in fig. 3, the oil tank body 301 is communicated with the safety valve at the hydraulic end of the diaphragm pump through a safety valve oil return line 305, a second impeller sight glass 3010 is installed on each safety valve oil return branch pipe of the safety valve oil return line 305, and after the system overpressure safety valve jumps, the diaphragm chamber oil in the hydraulic end of the diaphragm pump returns to the oil tank body 301 through the safety valve oil return line 305.

Specifically, as shown in fig. 3, the oil tank 301 is communicated with an exhaust valve at the hydraulic end of the diaphragm pump through an exhaust pipe 306, the opening of the oil tank 301 connected with the relief valve return pipe 305 and the exhaust pipe 306 can be higher than the standard oil level in the oil tank 301, a vane mirror 309 is mounted on each pump head exhaust branch pipe of the exhaust pipe 306, a certain amount of exhaust or oil is discharged during each stroke during the normal operation of the diaphragm pump, and the discharged oil returns to the oil tank 301 through the exhaust pipe 306.

Specifically, as shown in fig. 3, a drain 307 is installed on the oil tank 301, a valve is installed on the drain 307, the valve is in a normally closed state, and the valve is opened during oil drainage.

Specifically, as shown in fig. 3, an oil level gauge 308 is installed on the tank body 301, and the height of the oil level in the tank body 301 can be seen through the oil level gauge 308.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The external oil tank system for the hydraulic end of the hydraulic diaphragm pump comprises a pump transmission assembly (1) and a pump hydraulic end assembly (2), wherein the pump transmission assembly (1) comprises a transmission box body (4), and is characterized in that an external oil tank system (3) for storing power fluid is arranged outside the transmission box body (4), and the external oil tank system (3) is communicated with the pump hydraulic end assembly (2) through a pipeline so as to input the oil quantity required by a diaphragm cavity in the hydraulic end of the diaphragm pump;

the external oil tank system (3) comprises an oil tank body (301) arranged outside the transmission tank body (4) and a tank cover (302) arranged on the oil tank body (301), and the oil tank body (301) is communicated with the hydraulic end of the diaphragm pump through an oil supplementing pipeline (304).

2. The external oil tank system for the hydraulic end of the hydraulic diaphragm pump according to claim 1, wherein the oil tank body (301) is communicated with the safety valve at the hydraulic end of the diaphragm pump through a safety valve oil return pipeline (305), and a second impeller sight glass (3010) is mounted on each safety valve oil return branch pipe of the safety valve oil return pipeline (305).

3. The external oil tank system for the hydraulic end of the hydraulic diaphragm pump according to claim 1, wherein the oil tank body (301) is communicated with an exhaust valve at the hydraulic end of the diaphragm pump through an oil exhaust pipeline (306), and a first impeller sight glass (309) is mounted on each pump head oil exhaust branch pipe of the oil exhaust pipeline (306).

4. The external oil tank system for the hydraulic end of the hydraulic diaphragm pump according to claim 1, wherein the oil supply pipeline (304) is provided with a valve and a filter (3011).

5. The external oil tank system of the hydraulic end of a hydraulic diaphragm pump according to claim 1, wherein the oil tank body (301) is installed outside the transmission tank body (4) through an oil tank bracket (303).

6. The external oil tank system for the hydraulic end of the hydraulic diaphragm pump according to claim 1, wherein a drain outlet (307) and an oil level gauge (308) are installed on the oil tank body (301), and a valve is arranged on the drain outlet (307).