CN211852154U - Double-screw pump and lubricating and cooling system - Google Patents

Abstract

The utility model provides a double-screw pump and a lubricating and cooling system, belonging to the technical field of screw pumps, wherein the double-screw pump comprises a pump body, a first rotating shaft, a first shell, a first bearing and a second shell, and a first cavity is arranged in the first shell; the first bearing is positioned in the first cavity, and the first shell is provided with a first liquid inlet and a first liquid outlet which are respectively communicated with the first cavity; the second shell cover is arranged on the periphery of the gear and matched with the first shell to form a second cavity, and a second liquid inlet communicated with the second cavity is formed in the second shell. The lubricating and cooling system comprises a lubricating oil station, the double-screw pump and a cooling device, wherein the lubricating oil station is used for supplying lubricating oil; the double-screw pump is connected with the lubricating oil station; the cooling device is arranged on the lubricating oil station and used for cooling lubricating oil. The utility model provides a double-screw pump work efficiency is higher, can satisfy the demand of abominable operating mode.

Description

Double-screw pump and lubricating and cooling system

Technical Field

The utility model belongs to the technical field of the screw pump, more specifically say, relate to a double screw pump and lubricated cooling system.

Background

The double-screw pump can be suitable for cleaning media or media containing a small amount of particles, is widely applied, and is widely applied to industries such as petroleum, chemical engineering, metallurgy, steel and the like due to the structural particularity of the double-screw pump.

The existing double-screw pump is lubricated by manually adding lubricating oil (grease), so that the service life of the double-screw pump can be prolonged, but under the working conditions of severe conditions, unattended operation, offshore platform, high-temperature operation and the like, the requirements on lubrication and temperature rise of an upper bearing of the double-screw pump are high, but the lubrication cavities of a non-drive end gear box and a bearing box of the existing double-screw pump are shared, so that the lubrication and cooling efficiency is low, and the requirements cannot be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a double-screw pump and lubricated cooling system aims at solving the lubricated cooling efficiency of current double-screw pump and hangs down, can't satisfy the technical problem of special operating mode demand.

In order to achieve the above object, the utility model adopts the following technical scheme: there is provided a twin screw pump comprising:

a pump body;

the first rotating shaft is arranged on the pump body;

a gear provided at a non-driving end of the first rotating shaft;

the first shell is sleeved on the periphery of the first rotating shaft, and a first cavity is formed in the first shell;

the first bearing is arranged on the first rotating shaft and is positioned in the first cavity, the first shell is used for dividing the first bearing and the pump body, and a first liquid inlet and a first liquid outlet which are respectively communicated with the first cavity are formed in the first shell; and

the second shell covers the periphery of the gear and is matched with the first shell to form a second cavity, the second cavity is separated from the first cavity, and a second liquid inlet communicated with the second cavity is formed in the second shell.

As another embodiment of the present application, the first housing includes:

the shell is sleeved on the first rotating shaft; and

the blocking device is sleeved on the first rotating shaft and connected with the shell, and the blocking device and the shell are enclosed to form the first cavity.

As another embodiment of the present application, the housing includes:

the baffle is sleeved on the first rotating shaft and arranged on one side of the first bearing;

the enclosing plate is sleeved on the first rotating shaft, one side of the enclosing plate is fixedly connected with one side of the baffle, the inner surface of the enclosing plate is attached to the outer surface of the first bearing, and the first liquid inlet is formed in the top of the enclosing plate; and

the vertical plate is sleeved on the first rotating shaft, one side of the vertical plate is fixedly connected with the other side of the enclosing plate, the blocking device is detachably connected with the other side of the vertical plate, and the first liquid outlet is formed in the bottom of the vertical plate.

As another embodiment of the present application, the blocking device comprises;

the check ring is sleeved on the first rotating shaft, one side surface of the check ring is abutted with the first bearing, and the other side surface of the check ring is abutted with the gear;

the end cover is sleeved on the periphery of the retainer ring, the outer ring is fixedly connected with the vertical plate, and the inner side of the end cover is provided with a groove; and

and the sealing ring is arranged in the groove and sleeved on the periphery of the check ring.

As another embodiment of the present application, the twin-screw pump further includes:

the second bearing is arranged at the driving end of the first rotating shaft; and

the third shell is sleeved on the periphery of the first rotating shaft, a third cavity for accommodating the second bearing is formed in the third shell, and a third liquid inlet and a third liquid outlet which are communicated with the third cavity respectively are formed in the third shell.

As another embodiment of the present application, the axis of the third liquid outlet passes through the center of the second bearing and forms a predetermined included angle with the horizontal line.

The utility model provides a two screw pump's beneficial effect lies in: compared with the prior art, the first bearing of the double-screw pump is positioned in the first cavity, the gear is positioned in the second cavity, the first cavity and the second cavity are arranged in a split manner and are not communicated with each other, lubricating oil is injected into the first cavity through the first liquid inlet, and the lubricating oil reaches a lubricating effect through the first bearing and then flows out from the first liquid outlet; be equipped with the second inlet on the second shell, can artifically add lubricating oil to the second cavity in, lubricating oil flows through the gear at the injection in-process, and the gear is through self rotatory lubrication of realizing. The utility model discloses first bearing separates the setting with the lubricated chamber of gear in the double-screw pump, the lubrication of first bearing need not to be considered again to the lubricating oil quantity on the gear, can regulate and control the lubricating oil volume in first cavity and the second cavity respectively, because the circulation of lubricating oil in first cavity flows, the rise of temperature in first cavity has been hindered, the temperature that will lead to first cavity is less than the temperature of second cavity, and then also play the effect of cooling to the lubricating oil in the second cavity, prevent that the oil in first cavity and the second cavity is too high, guarantee that gear and first bearing department all reach best lubricated cooling state, double-screw work efficiency is improved, thereby satisfy the high demand of special operating mode.

The utility model also provides a lubricated cooling system, include:

a lubricating oil station for supplying lubricating oil;

the double-screw pump is connected with the lubricating oil station; and

and the cooling device is arranged on the lubricating oil station and used for cooling the lubricating oil.

As another embodiment of this application, be equipped with on the second shell with the second liquid outlet of second cavity intercommunication, the lubrication cooling system still includes:

the differential pressure sensor is arranged on the second shell, and a probe of the differential pressure sensor extends into the second cavity;

an electric control valve is arranged on the second liquid inlet, the differential pressure sensor is in communication connection with the electric control valve, and when the differential pressure sensor exceeds a preset value, the electric control valve is closed.

As another embodiment of the present application, the lubricating oil station includes:

the oil tank is provided with an oil outlet and an oil return port which are respectively connected with the double-screw pump;

the two oil pumps are respectively arranged on the oil outlet and the oil return port; and

and the filter is arranged on the oil return port and used for filtering impurities flowing through the liquid from the oil return port.

As another embodiment of this application, be equipped with temperature controller on the lubricating oil station, temperature controller includes:

the temperature sensor is arranged on the oil tank and used for measuring the temperature of liquid in the oil tank; and

and the heating controller is arranged on the oil tank and used for adjusting the temperature of the liquid according to the temperature of the liquid.

The utility model provides a lubricated cooling system's beneficial effect lies in: compared with the prior art, the utility model discloses lubricated cooling system lubricating oil station carries lubricating oil to the twin-screw pump, then flows through the twin-screw pump after first cavity, and cooling device cools off the back to lubricating oil, flows back to the lubricating oil station, and the process realizes the lubricated cooling to the twin-screw pump internals above constantly circulating. The utility model discloses lubricated cooling system realizes the lubrication to part in the twin-screw pump through the circulation flow of lubricating oil, and lubricating oil cyclic utilization has avoided the waste at this in-process, through cooling device's effect, cools down lubricating oil, cools down to the position that lubricating oil flowed through, reachs the cooling to the twin-screw pump device, prevents that the device from being overheated, improves the life of twin-screw pump.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic front view of a lubricating and cooling system according to an embodiment of the present invention;

fig. 2 is a schematic top view of a lubricating and cooling system according to an embodiment of the present invention;

fig. 3 is a left side view structural schematic diagram of a twin-screw pump according to a second embodiment of the present invention;

fig. 4 is a schematic right-view structural diagram of a twin-screw pump according to an embodiment of the present invention;

fig. 5 is a cross-sectional view of a driving end used in a first embodiment of the present invention;

fig. 6 is a cross-sectional view of a non-drive end in accordance with an embodiment of the present invention;

fig. 7 is a control block diagram according to a first embodiment of the present invention;

fig. 8 is a block diagram of an electronic detection device according to an embodiment of the present invention.

In the figure: 1. a first housing; 101. a housing; 1011. a baffle plate; 1012. enclosing plates; 1013. a vertical plate; 102. a barrier device; 1021. a retainer ring; 1022. an end cap; 1023. a seal ring; 2. a pump body; 3. a second housing; 4. a first rotating shaft; 5. a first bearing; 6. a gear; 7. a first liquid inlet; 8. a first liquid outlet; 9. a first cavity; 10. a second cavity; 11. a second liquid inlet; 12. a second liquid outlet; 13. an electronic detection device; 14. a differential pressure sensor; 15. an electrically controlled valve; 16. a second bearing; 17. a third cavity; 18. a third liquid inlet; 19. a third liquid outlet; 20. a lubricating oil station; 201. an oil tank; 202. an oil pump; 203. a filter; 21. a third housing; 22. a cooling device; 23. a temperature controller; 231. a temperature sensor; 232. a heating controller; 24. a liquid level meter; 25. a pressure gauge; 26. a safety valve.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 8 together, the twin-screw pump of the present invention will now be described. The double-screw pump comprises a pump body 2, a first rotating shaft 4, a gear 6, a first shell 1, a first bearing 5 and a second shell 3, wherein the first rotating shaft 4 is arranged on the pump body 2; the gear 6 is arranged at the non-driving end of the first rotating shaft 4; the first shell 1 is sleeved on the periphery of the first rotating shaft 4, and a first cavity 9 is arranged in the first shell 1; the first bearing 5 is arranged on the first rotating shaft 4 and is positioned in the first cavity 9, the first shell 1 is used for dividing the first bearing 5 and the pump body 2, and the first shell 1 is provided with a first liquid inlet 7 and a first liquid outlet 8 which are respectively communicated with the first cavity 9; the second shell 3 covers the periphery of the gear 6 and is matched with the first shell 1 to form a second cavity 10, the second cavity 10 is separated from the first cavity 9, and a second liquid inlet 11 communicated with the second cavity 10 is formed in the second shell 3.

In fig. 1, a is a driving end, and B is a non-driving end.

Compared with the prior art, the utility model provides a double-screw pump, the utility model discloses the first bearing 5 of double-screw pump is in first cavity 9, gear 6 is in second cavity 10, first cavity 9 is cut apart from setting up with second cavity 10, each other is not communicated, lubricating oil is injected into first cavity 9 through first inlet 7, lubricating oil flows through first bearing 5 and reaches the lubrication effect to it, then flows out from first liquid outlet 8; be equipped with second inlet 11 on the second shell 3, can artifically add lubricating oil to second cavity 10 in, lubricating oil flows through gear 6 at the injection in-process, and gear 6 is through self rotatory lubrication of realizing. The utility model discloses first bearing 5 separates the setting with the lubricated chamber of gear 6 in the double screw pump, the lubrication of first bearing 5 need not to be considered again to the lubricating oil quantity on the gear 6, can regulate and control the lubricating oil volume in first cavity 9 and the second cavity 10 respectively, because the circulation of lubricating oil in first cavity 9 flows, the rise of temperature in first cavity 9 has been hindered, the temperature that will lead to first cavity 9 is less than the temperature of second cavity 10, and then also play the effect of cooling to the lubricating oil in the second cavity 10, prevent that the oil temperature in first cavity 9 and the second cavity 10 is too high, guarantee that gear 6 and first bearing 5 department all reach best lubricated cooling state, improve the work efficiency of double screw pump, thereby satisfy special operating mode's high demand.

As a specific embodiment of the twin-screw pump provided in the present invention, please refer to fig. 6, the first housing 11 includes a housing 101 and a blocking device 102, the housing 101 is sleeved on the first rotating shaft 4; the blocking device 102 is sleeved on the first rotating shaft 4 and connected with the housing 101, and the blocking device 102 and the housing 101 enclose to form a first cavity 9. The first bearing 5 is enclosed in the first cavity 9 through the shell 101 and the blocking device 102, and lubricating oil is injected into the first cavity 9 from the first liquid inlet 7, so that the first bearing 5 can be lubricated, the lubricating condition of the first bearing 5 is not affected by the amount of lubricating oil required by the gear 6, and the lubricating effect of the first bearing 5 is more sufficient; the blocking device 102 and the shell 101 are detachably connected, so that when the first bearing 5 and the gear 6 are integrally lubricated, the blocking device 102 can be detached, and the lubrication condition required by the pump body 2 is convenient to switch.

As a specific embodiment of the twin-screw pump provided in the present invention, please refer to fig. 6, the housing 101 includes a baffle 1011, a surrounding plate 1012 and a vertical plate 1013, the baffle 1011 is sleeved on the first rotating shaft 4 and is disposed on one side of the first bearing 5; the enclosing plate 1012 is sleeved on the first rotating shaft 4, one side of the enclosing plate 1012 is fixedly connected with one side of the baffle 1011, the inner surface of the enclosing plate 1012 is attached to the outer surface of the first bearing 5, and the first liquid inlet 7 is arranged at the top of the enclosing plate 1012; the vertical plate 1013 is sleeved on the first rotating shaft 4, one side of the vertical plate 1013 is fixedly connected to the other side of the surrounding plate 1012, the blocking device 102 is detachably connected to the other side of the vertical plate 1013, and the first liquid outlet 8 is disposed at the bottom of the vertical plate 1013. Lubricating oil gets into first cavity 9 through first inlet 7 on bounding wall 1012, and inside lubricating oil got into first bearing 5 from one side of first bearing 5, the first bearing 5 inner circle pivoted simultaneously drives lubricating oil and lubricates self, then spills over from the opposite side and flows out from the first liquid outlet 8 of riser 1013 bottom, and this structure realizes the sealed lubrication to the bearing, and through the circulation flow of lubricated liquid, when realizing even lubrication, the quantity of lubricating oil has been saved.

As a specific embodiment of the twin-screw pump provided by the present invention, please refer to fig. 6, the blocking device 102 includes a retaining ring 1021, an end cap 1022 and a sealing ring 1023, the retaining ring 1021 is sleeved on the first rotating shaft 4, one side surface of the retaining ring 1021 abuts against the first bearing 5, and the other side surface abuts against the first gear 6; the end cover 1022 is sleeved on the periphery of the retaining ring 1021, the outer ring of the end cover is fixedly connected with the vertical plate 1013, and the inner side of the end cover 1022 is provided with a groove; the sealing ring 1023 is arranged in the groove and sleeved on the periphery of the retaining ring 1021. The retainer ring 1021 and the baffle 1011 are clamped at two ends of the first bearing 5 to realize the positioning of the first bearing 5, and the retainer ring 1021 and the fixing device at the end part of the first rotating shaft 4 realize the positioning of the gear 6; the end cover 1022 is fixed with the vertical plate 1013 to realize the separation of the first cavity 9 and the second cavity 10; sealing washer 1023 increases the leakproofness of first cavity 9, prevents that the leakage of the lubricating oil in first cavity 9 from causing lubricating oil in the second cavity 10 too much, prevents that lubricating oil is too much to cause overheated, guarantee gear 6's life on the gear 6.

As a specific embodiment of the twin-screw pump provided by the present invention, please refer to fig. 1 to 6, the twin-screw pump further includes a second bearing 16 and a third housing 21, the second bearing 16 is disposed at the driving end of the first rotating shaft 4; the third housing 21 is sleeved on the periphery of the first rotating shaft 4, a third cavity 17 for accommodating the second bearing 16 is arranged in the third housing 21, and a third liquid inlet 18 and a third liquid outlet 19 which are respectively communicated with the third cavity 17 are arranged on the third housing 21. Lubricating oil gets into third cavity 17 through third liquid inlet 18, flows through second bearing 16 after, flows out from third liquid outlet 19, and the lubricating oil that flows out handles and can recycles, realizes the lubrication to drive end second bearing 16, and the circulating flow of lubricating oil can be abundant lubricated second bearing 16, and the lubricating oil circulating flow has hindered the intensification of lubricating oil, plays the refrigerated effect when lubricated to second bearing 16.

As a specific embodiment of the twin-screw pump provided in the present invention, please refer to fig. 3 and 5, the axis of the third liquid outlet 19 passes through the center of the second bearing 16, and is in the preset angle with the horizontal line. Lubricating oil gets into third cavity 17 and flows to the bottom of third cavity 17 because of the action of gravity, and the lubricating oil accumulation of bottom can reach the height of third liquid outlet 19 after reaching certain height, then flows out from third liquid outlet 19 and realizes the circulation of lubricating oil, and this structure can continuously form a certain amount of trapped oil in the bottom of third cavity 17, and under the circumstances that does not fill into lubricating oil and lubricate, the trapped oil of third cavity 17 bottom can prevent the excessive drying in the third cavity 17, prolongs the life of second bearing 16.

In this embodiment, the third liquid outlet 19 may also be disposed at the bottom of the third cavity 17 perpendicularly to the center of the second bearing 16, so as to facilitate the outflow of the lubricating oil.

Referring to fig. 1 to 8, the present invention further provides a lubrication cooling system, which includes a lubrication oil station 20, the twin-screw pump and a cooling device 22, wherein the lubrication oil station 20 is used for supplying lubrication oil; the twin-screw pump is connected with the lubricating oil station 20; a cooling device 22 is provided at the lubrication station 20 for cooling the lubrication oil.

The utility model provides a lubrication and cooling system, compared with the prior art, the utility model discloses lubrication oil station 20 of lubrication and cooling system carries lubricating oil to the twin-screw pump, then flows through the twin-screw pump that then flows out behind the first cavity 9, and cooling device 22 cools off the back to lubricating oil, flows back to lubrication oil station 20, and the process realizes the lubrication and cooling to the twin-screw pump internals more than the continuous circulation. The utility model discloses lubricated cooling system realizes the lubrication to part in the twin-screw pump through the circulation flow of lubricating oil, and lubricating oil cyclic utilization has avoided the waste at this in-process, through cooling device 22's effect, cools down to lubricating oil, cools down to the position that lubricating oil flowed through, reachs the cooling to the twin-screw pump device, prevents that the device is overheated, improves the life of twin-screw pump.

As a specific embodiment of the lubrication cooling system provided in the present invention, please refer to fig. 1 to 3 and fig. 5 to 8, a second liquid outlet 12 communicated with the second cavity 10 is disposed on the second housing 3, the lubrication cooling system further includes a differential pressure sensor 14, the differential pressure sensor 14 is disposed on the second housing 3, and a probe of the differential pressure sensor 14 extends into the second cavity 10; an electric control valve 15 is arranged on the second liquid inlet 11, the differential pressure sensor 14 is in communication connection with the electric control valve 15, and when the differential pressure sensor 14 exceeds a preset value, the electric control valve 15 is closed. Second inlet 11 sets up with first inlet 7 side by side, lubricating oil gets into second cavity 10 through second inlet 11, drench down from the top of gear 6, the rotation of gear 6 drives lubricating oil and realizes self-lubrication, the gear 6 rotates the bottom that the lubricating oil that splashes at second cavity 10 lateral wall flows to second cavity 10 because of the action of gravity among the process, flow through second liquid outlet 12, the lubricating oil that flows out can be lubricated gear 6 through handling recycle, this structure can realize the circulation lubrication to gear 6, can improve gear 6's the lubricated condition through the flow of control lubricating oil, the quantity is saved in the circulation use of lubricating oil, and production cost is reduced.

The readings of the differential pressure sensor 14 can be used as an index for detecting the flow rate of the lubricating oil in the second cavity 10, when the readings of the differential pressure sensor 14 are higher, the excessive lubricating oil is indicated, at this time, the readings of the differential pressure sensor 14 are transmitted to a control module of the electronic control valve 15, when the readings received by the control module are higher than a preset value, a closing signal is sent to the electronic control valve 15, the electronic control valve 15 is closed, the second liquid inlet 11 is closed, and the lubricating oil injection is stopped; when the readings of the differential pressure sensor 14 are lower, the lubricating oil is less, at the moment, the readings of the differential pressure sensor 14 are transmitted to the control module of the electric control valve 15, the control module receives the readings lower than the preset value, sends an opening signal to the electric control valve 15, the electric control valve 15 is opened, the second liquid inlet 11 is opened, and oil is filled into the second cavity 10.

As a specific embodiment of the lubrication cooling system provided by the present invention, please refer to fig. 1 to 2, the lubrication oil station 20 includes an oil tank 201, an oil pump 202 and a filter 203, the oil tank 201 is provided with an oil outlet and an oil return port respectively connected to a twin-screw pump; two oil pumps 202 are arranged, and the two oil pumps 202 are respectively arranged on the oil outlet and the oil return port; the filter 203 is disposed on the oil return port and is used for filtering impurities in the liquid flowing through the oil return port. The oil pumps 202 at the oil outlets are used for pumping lubricating oil in the oil tank 201 to flow into the twin-screw pump for lubrication, the oil pumps 202 at the oil return ports are used for enabling the lubricating oil to flow back to the oil tank 201, and the two oil pumps 202 provide power for the circulating flow of the lubricating oil; when the lubricating oil flows out of the double-screw pump, impurities such as sand and iron filings can be mixed, the impurities such as parts flowing back to the bearing or the gear 6 can cause abrasion of elements, and the lubricating oil can effectively filter the sand and the iron filings through the filter 203 before flowing back to the oil tank 201, so that the elements needing to be lubricated are not damaged while the lubricating effect is ensured.

In this embodiment, can be connected the oil-out with filter 203, and then lubricating oil also can filter through filter 203 when flowing out oil tank 201 and lubricate the twin-screw pump again, all filters in lubricating oil inflow and outflow oil tank 201, effectively reduces the impurity in the lubricating oil, improves lubricated effect.

As a specific embodiment of the lubrication cooling system provided in the present invention, please refer to fig. 1 to 2, a temperature controller 23 is disposed on the lubrication oil station 20, the temperature controller 23 includes a temperature sensor 231 and a heating controller 232, the temperature sensor 231 is disposed on the oil tank 201 and is used for measuring the temperature of the liquid in the oil tank 201; the heating controller 232 is disposed on the oil tank 201 and is used for adjusting the temperature of the liquid according to the temperature of the liquid. Cooling device 22 on lubricating oil station 20 can cool down lubricating oil, but lubricating oil if the temperature is crossed lowly, can cause the viscosity increase of lubricating oil, pump oil pumping difficulty, reduce lubricated effect when increasing the load of pump, consequently temperature sensor 231 can monitor the temperature of lubricating oil in oil tank 201 constantly, when temperature sensor 231 reality temperature is lower, can open heating controller 232, heat the lubricating oil in the postbox, the temperature of guarantee lubricating oil is suitable, improves lubricated effect.

In this embodiment, the oil tank 201 is further provided with a liquid level meter 24, a pressure gauge 25 and a safety valve 26, and the liquid level meter 24 is convenient for observing the amount of lubricating oil in the oil tank 201; when the pressure in the oil tank 201 is too high, a safety accident is easy to happen, and when the indication number of the pressure gauge 25 is too high, the safety valve 26 can be opened to release the pressure, so that the safety of the device is guaranteed.

As a specific embodiment of the lubrication cooling system provided in the present invention, please refer to fig. 2 and 8, the lubrication cooling system further includes an electronic detection device 13, and the electronic detection device 13 is in communication connection with the differential pressure sensor 14, the electric control valve 15, the oil pump 202, the cooling device 22, the temperature sensor 231, the heating controller 232, the pressure gauge 25 and the safety valve 26. The whole lubricating and cooling system is conveniently and manually or automatically controlled through the electronic detection device 13, and the labor intensity is reduced.

The readings of the differential pressure sensor 14 are displayed on the electronic detection device 13, when the readings of the differential pressure sensor 13 are too high, a closing signal is sent to the electronic control valve 15 through manual work or automatic identification of the electronic detection device 13, and the electronic control valve 15 is closed; when the reading is too low, an opening signal is sent to the electric control valve 15 through the control button, and the electric control valve 15 is opened.

When the double-screw pump needs to be lubricated, the electronic detection device 13 controls the oil pump 202 at the oil outlet and the oil return port to be opened, so that the circulating flow of lubricating oil is realized; when the twin-screw pump does not need to be lubricated or the maintenance is required, the oil pump 202 is controlled to be closed.

The readings of the temperature sensor 231 are displayed on the electronic detection device 13, and when the readings of the temperature sensor 231 are too high, the reading is automatically identified through manual work or the electronic detection device 13, and the cooling device 22 is controlled to be started to cool the lubricating oil; if the reading is too low, the heating controller 232 is controlled to start heating the lubricating oil.

The reading on the pressure gauge 25 is displayed on the electronic detection device 13, when the reading on the pressure gauge 25 is too high, the reading is automatically identified through manual work or the electronic detection device 13, an opening signal is sent to the safety valve 26, and the safety valve 26 is opened; when the reading is lower than the dangerous value, a closing signal is sent to the safety valve 26, and the safety valve 26 is closed.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. Twin-screw pump, characterized in that includes:

a pump body;

the first rotating shaft is arranged on the pump body;

a gear provided at a non-driving end of the first rotating shaft;

the first shell is sleeved on the periphery of the first rotating shaft, and a first cavity is formed in the first shell;

the first bearing is arranged on the first rotating shaft and is positioned in the first cavity, the first shell is used for dividing the first bearing and the pump body, and a first liquid inlet and a first liquid outlet which are respectively communicated with the first cavity are formed in the first shell; and

the second shell covers the periphery of the gear and is matched with the first shell to form a second cavity, the second cavity is separated from the first cavity, and a second liquid inlet communicated with the second cavity is formed in the second shell.

2. The twin screw pump of claim 1, wherein said first housing comprises:

the shell is sleeved on the first rotating shaft; and

the blocking device is sleeved on the first rotating shaft and connected with the shell, and the blocking device and the shell are enclosed to form the first cavity.

3. The twin screw pump of claim 2, wherein said housing includes:

the baffle is sleeved on the first rotating shaft and arranged on one side of the first bearing;

the enclosing plate is sleeved on the first rotating shaft, one side of the enclosing plate is fixedly connected with one side of the baffle, the inner surface of the enclosing plate is attached to the outer surface of the first bearing, and the first liquid inlet is formed in the top of the enclosing plate; and

the vertical plate is sleeved on the first rotating shaft, one side of the vertical plate is fixedly connected with the other side of the enclosing plate, the blocking device is detachably connected with the other side of the vertical plate, and the first liquid outlet is formed in the bottom of the vertical plate.

4. The twin screw pump of claim 3, wherein said dam means comprises;

the check ring is sleeved on the first rotating shaft, one side surface of the check ring is abutted with the first bearing, and the other side surface of the check ring is abutted with the gear;

the end cover is sleeved on the periphery of the retainer ring, the outer ring is fixedly connected with the vertical plate, and the inner side of the end cover is provided with a groove; and

and the sealing ring is arranged in the groove and sleeved on the periphery of the check ring.

5. The twin screw pump of claim 1, further comprising:

the second bearing is arranged at the driving end of the first rotating shaft; and

the third shell is sleeved on the periphery of the first rotating shaft, a third cavity for accommodating the second bearing is formed in the third shell, and a third liquid inlet and a third liquid outlet which are communicated with the third cavity respectively are formed in the third shell.

6. The twin screw pump of claim 5, wherein said third exit port has an axis passing through the center of said second bearing and disposed at a predetermined angle relative to the horizontal.

7. A lubrication and cooling system, comprising:

a lubricating oil station for supplying lubricating oil;

a twin screw pump according to any one of claims 1 to 6 connected to said lubrication station; and

and the cooling device is arranged on the lubricating oil station and used for cooling the lubricating oil.

8. The lubrication cooling system of claim 7, wherein said second housing defines a second fluid outlet in communication with said second cavity, said lubrication cooling system further comprising:

the differential pressure sensor is arranged on the second shell, and a probe of the differential pressure sensor extends into the second cavity;

an electric control valve is arranged on the second liquid inlet, the differential pressure sensor is in communication connection with the electric control valve, and when the differential pressure sensor exceeds a preset value, the electric control valve is closed.

9. The lubrication cooling system of claim 8, wherein the lubrication station comprises:

the oil tank is provided with an oil outlet and an oil return port which are respectively connected with the double-screw pump;

the two oil pumps are respectively arranged on the oil outlet and the oil return port; and

and the filter is arranged on the oil return port and used for filtering impurities flowing through the liquid from the oil return port.

10. The lubrication cooling system of claim 9, wherein a temperature controller is disposed on the lubrication station, the temperature controller comprising:

the temperature sensor is arranged on the oil tank and used for measuring the temperature of liquid in the oil tank; and

and the heating controller is arranged on the oil tank and used for adjusting the temperature of the liquid according to the temperature of the liquid.

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