CN217632911U - Anti-overheating vane pump - Google Patents

Abstract

The utility model provides a can prevent overheated impeller pump, it includes the hydraulic means that impeller pump and impeller pump are connected, the pump body of impeller pump forms the pump chamber jointly by protecgulum and back lid, the oil inlet of the pump body is located on the protecgulum, the oil-out of the pump body is located on the back lid, be equipped with the oil return opening that is linked together with the batch oil tank in the hydraulic means, be equipped with the first oil duct that leads to that is linked together with the pump chamber on the back lid, be equipped with the second oil duct that is linked together with the oil return opening in the hydraulic means, first oil duct that leads to is linked together with second oil duct. The utility model discloses owing to cover at the back and set up first logical oil duct, the one end that first leads to the oil duct is linked together with the constant head tank of pressing close to the bearing, and the second through oil duct that sets up on the other end that first leads to the oil duct and the hydraulic means is linked together, will be in the interior fluid of impeller pump dead angle that flows and the highest fluid guide of oil temperature returns the batch oil tank for the impeller pump can obtain the cooling effect of ideal.

Description

Anti-overheating vane pump

Technical Field

The utility model relates to a hydraulic pump technical field, more specifically say, the utility model relates to a vane pump that is arranged in hydraulic system to need operating modes such as frequent pressurize.

Background

The characteristics of the vane pump, such as compact structure, large flow, high pressure, small pulsation, high efficiency and low noise during working, enable the vane pump to be widely applied to the fields of machine tools, plastic machines, leather machines, forging and pressing machines, engineering machines and the like.

When the vane pump is used for pressure maintaining or load-bearing slow running of the operation machinery, the output flow of the vane pump is small, so that heat generated by the vane pump cannot be taken away in time, and the vane pump is overheated. The overheating of the vane pump can bring about great harm, such as accelerated aging of a sealing element and oil deterioration, increased leakage, reduced viscosity of oil, reduced lubrication effect, accelerated abrasion and even cavitation. In order to solve the problem, the chinese patent office discloses an invention patent with the publication number CN114060339a at 18/2/2022, and the technical scheme of the invention patent for solving the overheating problem of the vane pump is a reverse unloading valve capable of preventing the hydraulic pump from overheating, which comprises a valve body, wherein an oil inlet connected with the hydraulic pump, an oil outlet connected with the hydraulic driving device and an oil return port connected with an oil tank for recovering oil of the hydraulic system are arranged in the valve body, the oil inlet is communicated with the oil outlet through a communication channel in the valve body, a valve core capable of cutting off the communication between the oil inlet and the oil outlet is arranged in the communication channel, a micro-channel is arranged on the valve core, and the micro-channel can be respectively communicated with the oil outlet and the oil return port when the hydraulic driving device is in a pressure maintaining state. The technical scheme is that a micro-channel is arranged on a reverse unloading valve of the hydraulic pump in a pressure maintaining state to guide oil in an oil outlet of the hydraulic pump to an oil return port, so that the hydraulic pump has a certain flow rate to take away heat in the pressure maintaining state to prevent the hydraulic pump from overheating. However, the oil outlet of the vane pump is not the place with the highest temperature of the oil, so the obtained beneficial effect is not optimal.

Disclosure of Invention

In order to overcome the defects, the utility model discloses the technical problem that needs to be solved is: the anti-overheating vane pump can lead oil with the highest temperature in the pump back to the oil storage tank for effective cooling.

The utility model provides a technical scheme that prior art exists the problem is: the utility model provides a can prevent overheated impeller pump, it includes the hydraulic means that impeller pump and impeller pump are connected, the pump body of impeller pump forms the pump chamber jointly by protecgulum and back lid, the oil inlet of the pump body is located on the protecgulum, the oil-out of the pump body is located on the back lid, be equipped with the oil return opening that is linked together with the batch oil tank in the hydraulic means, be equipped with the first oil duct that leads to that is linked together with the pump chamber on the back lid, be equipped with the second oil duct that is linked together with the oil return opening in the hydraulic means, first oil duct that leads to is linked together with second oil duct.

Because the oil inlet of vane pump sets up at the protecgulum, the oil-out sets up at the back lid, and the mechanism that produces heat for the pressurization of oil liquid in the pump is covered after connecting, the lower fluid of oil temperature gets into from the oil inlet like this, through the pressurization and produce a large amount of thermal high pressure high temperature fluid and discharge from the oil-out, therefore, the one side oil temperature that the pump chamber is located the protecgulum is lower relatively, the oil temperature that the pump chamber is located back lid one side is higher, and there is fluid dead angle that flows in the pump chamber that is located back lid one side, the fluid of this department does not flow, receive the thermal heating of fluid pressurization mechanism production for a long time, make the temperature of this department fluid be higher than the oil temperature of oil-out. The utility model discloses the oil that will locate the temperature superelevation is cooled off in entering into the oil storage tank through setting up the first oil duct that leads to on covering behind and setting up the second oil duct drainage in hydraulic means for the fluid that is located the dead angle that flows begins to flow, obtains the fluid replenishment that the temperature is lower relatively, thereby obtains comparatively ideal cooling effect.

As a further technical scheme, a stator is arranged in the pump cavity, a rotor is arranged in the stator, a plurality of blades are arranged on the rotor, a front side plate and a rear side plate are respectively arranged on two sides of the stator, the rotor is fixedly connected with a rotating shaft, the rotating shaft sequentially penetrates through the rear side plate and the rear cover and is connected with a driving device of the vane pump, a bearing is arranged between the rotating shaft and the rear cover, and the first oil through passage is communicated with the pump cavity between the rear side plate and the bearing.

The mechanism that stator, rotor, blade, preceding curb plate, posterior lateral plate formed be promptly the above-mentioned mechanism that produces heat is pressurized to fluid, because the bearing also can produce more heat when rotatory friction, set up first oil duct in the pump chamber position department between posterior lateral plate, bearing, be favorable to discharging more heat.

As a further technical scheme, the outer side of one side, facing the stator, of the bearing of the rear cover is provided with a positioning groove, and the first oil communicating channel is communicated with the positioning groove.

The bearing is pressed close to the constant head tank, and the oil temperature that is located the constant head tank position is the highest, with first logical oil duct with the constant head tank is linked together, can discharge the fluid of the highest department of the interior oil temperature of pump like this, and the cooling effect that obtains is the most ideal.

As a further technical scheme, a cavity communicated with the oil return port is arranged in the hydraulic device, and the second oil passage is communicated with the cavity.

The hydraulic device is internally provided with a cavity communicated with the oil return port, the cavity is closer to the rear cover of the vane pump, the second oil passage is communicated with the cavity, and the manufacturing cost for arranging the second oil passage can be reduced.

The utility model discloses owing to set up first logical oil duct on covering at the back, the one end that first leads to the oil duct is linked together with the constant head tank of pressing close to the bearing, and the second that sets up on the other end of first logical oil duct and the hydraulic means leads back the batch oil tank at the fluid dead angle that flows in the impeller pump and the highest fluid guide of oil temperature for the impeller pump can obtain the cooling effect of ideal.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: the oil pump comprises a vane pump 1, a front cover 2, an oil inlet 3, an oil return opening 4, a hydraulic device 5, a cavity 6, a second oil passage 7, a first oil passage 8, a positioning groove 9, a rear cover 10, a bearing 11, a rotating shaft 12, a rear side plate 13, a rotor 14, vanes 15, a stator 16 and a front side plate 17.

Detailed Description

The present invention will be further described with reference to the following specific embodiments and accompanying drawings.

The embodiment is as follows: a vane pump capable of preventing overheating is shown in fig. 1 and comprises a vane pump 1 and a hydraulic device 5 connected with the vane pump 1, wherein a pump cavity is formed by a front cover 2 and a rear cover 10 of a pump body of the vane pump 1, a stator 16 is arranged in the pump cavity, a rotor 14 is arranged in the stator 16, a plurality of vanes 15 are arranged on the rotor 14, a front side plate 17 and a rear side plate 13 are respectively arranged on two sides of the stator 16, the rotor 14 is fixedly connected with a rotating shaft 12, the rotating shaft 12 sequentially penetrates through the rear side plate 13 and the rear cover 10 to be connected with a driving device of the vane pump 1, a bearing 11 is arranged between the rotating shaft 12 and the rear cover 10, a positioning groove 9 is arranged on the outer side of one side, facing the stator 16, of the bearing 11, of the rear cover 10, an oil inlet 3 of the pump body is arranged on the front cover 2, an oil outlet of the pump body is arranged on the rear cover 10, a cavity 4 communicated with an oil storage tank and a cavity 6 communicated with the oil return opening 4 are arranged in the hydraulic device 5, and a first through oil passage 8 communicated with the positioning groove 9 is arranged in the hydraulic device 5, and a second through oil passage 7 and a second oil passage 7 are communicated with the oil passage 7.

The above-described embodiments are merely preferred embodiments of the present invention, which are not intended to limit the present invention in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.

Details not described in the present specification belong to the prior art known to those skilled in the art.

Claims (4)

1. The utility model provides a can prevent overheated impeller pump, it includes impeller pump and the hydraulic means that the impeller pump is connected, the pump body of impeller pump is covered by protecgulum and back and is formed the pump chamber jointly, the oil inlet of the pump body is located on the protecgulum, the oil-out of the pump body is located on the back covers, be equipped with the oil return opening that is linked together with the batch oil tank in the hydraulic means, its characterized in that, be equipped with the first oil duct that leads to that is linked together with the pump chamber on the back, be equipped with the second oil duct that is linked together with the oil return opening in the hydraulic means, first oil duct that leads to is linked together with second oil duct.

2. The anti-overheating vane pump according to claim 1, wherein a stator is disposed in the pump cavity, a rotor is disposed in the stator, a plurality of vanes are disposed on the rotor, a front side plate and a rear side plate are disposed on each of two sides of the stator, the rotor is fixedly connected with a rotating shaft, the rotating shaft sequentially penetrates through the rear side plate and the rear cover to be connected with a driving device of the vane pump, a bearing is disposed between the rotating shaft and the rear cover, and the first oil passage is communicated with the pump cavity between the rear side plate and the bearing.

3. The anti-overheating vane pump according to claim 2, wherein the rear cover is provided with a positioning groove on an outer side of a side of the bearing facing the stator, and the first oil passage communicates with the positioning groove.

4. The anti-overheating vane pump according to claim 1, 2 or 3, wherein a cavity communicated with the oil return port is formed in the hydraulic device, and the second oil passage is communicated with the cavity.

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