CN113027750A

CN113027750A - Long-life gear slurry pump

Info

Publication number: CN113027750A
Application number: CN202110376058.6A
Authority: CN
Inventors: 洪文生; 洪琦锋; 洪琦斌; 洪琪玲
Original assignee: Yisu Pump Valve Technology Co ltd
Current assignee: Yisu Pump Valve Technology Co ltd
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2021-06-25

Abstract

The invention relates to the technical field of pumps and discloses a long-service-life gear slurry pump. The gear slurry pump of the present invention comprises: the pump comprises a pump seat, a driving motor, a pump body, a first bearing frame, a second bearing frame, a driving shaft, a driving gear, a driven shaft, a driven gear, a first bearing and a second bearing, wherein the driving motor and the pump body are arranged on the pump seat, the first bearing frame and the second bearing frame are respectively arranged on two sides of the pump body, the driving shaft and the driven shaft are arranged on the pump body in a penetrating mode, the driving gear and the driven gear are arranged in the pump body in an meshed mode, and the driving shaft and the driven shaft are respectively arranged on the first bearing frame and the second bearing frame through the first bearing and the second bearing. According to the gear slurry pump, the bearing for fixing the gear shaft is arranged on the bearing frame, the bearing is not in contact with a fluid medium and cannot be corroded by the fluid, the service life of the pump body is prolonged, and the pump body can convey the fluid medium with characteristics of strong corrosivity, strong viscosity, microparticle property, microcrystalline property and the like.

Description

Long-life gear slurry pump

Technical Field

The embodiment of the invention relates to the technical field of pumps, in particular to a long-service-life gear slurry pump.

Background

Gear pumps are rotary pumps that deliver or pressurize a fluid medium by virtue of the change in working volume and movement created between a pump cylinder and a meshing gear.

The gear pump comprises the pump body and two gears, and two gears intermeshing' setting are in the pump body, separate into two spaces with the pump body. When the gear rotates, the volume of the space on the gear disengagement side is increased from small to large, vacuum is formed, fluid is sucked, and the volume of the space on the gear engagement side is decreased from large to small, so that the fluid is squeezed into the pipeline.

However, in the existing gear pump, the gear shaft is arranged on the left end cover and the right end cover of the pump body through the bearings, and when conveyed fluid has strong corrosivity, the bearing is corroded to cause failure of the gear pump, so that the service life of the gear pump is shortened.

Disclosure of Invention

The invention aims to provide a long-service-life gear slurry pump to solve the problems in the background technology.

The embodiment of the invention provides a long-life gear slurry pump, which comprises: the pump comprises a pump seat, a driving motor, a pump body, a first bearing frame, a second bearing frame, a driving shaft, a driving gear, a driven shaft, a driven gear, a first bearing and a second bearing;

the driving motor and the pump body are respectively arranged on the pump seat, and the pump seat is used for fixing;

the pump body is provided with an inlet connecting pipe and an outlet connecting pipe, and the inlet connecting pipe and the outlet connecting pipe are both communicated with the inner cavity of the pump body;

the first bearing frame and the second bearing frame are respectively arranged on two sides of the pump body;

the driving gear and the driven gear are respectively arranged on the driving shaft and the driven shaft;

the driving shaft with the driven shaft is rotatable to be worn to establish on the pump body, with pump body sealing connection, the driving gear with driven gear is located in the pump body, the driving gear with driven gear meshes the setting, just the driving shaft with the driven shaft passes through respectively first bearing with the second bearing sets up first bearing frame with on the second bearing frame, the driving shaft with driving motor's output shaft transmission is connected, driving motor is used for driving the driving gear with driven gear rotates.

Based on the scheme, the long-service-life gear slurry pump is characterized in that the pump seat, the driving motor, the pump body, the first bearing frame, the second bearing frame, the driving shaft, the driving gear, the driven shaft, the driven gear, the first bearing and the second bearing are arranged, the driving motor and the pump body are arranged on the pump seat, the first bearing frame and the second bearing frame are respectively arranged on the left side and the right side of the pump body, the driving shaft and the driven shaft are rotatably arranged on the pump body in a penetrating mode, the driving gear and the driven gear are respectively arranged on the driving shaft and the driven shaft and are located in an inner cavity of the pump body, the driving gear and the driven gear are arranged in a meshed mode, the driving shaft and the driven shaft are respectively arranged on the first bearing frame and the second bearing frame through the first bearing and the second. According to the long-life gear slurry pump, the bearing for fixing the gear shaft is arranged on the bearing frame on the outer side of the pump body, and the bearing is not in contact with a fluid medium in the use process of the pump body and cannot be corroded by fluid, so that the service life of the pump body is prolonged, and the pump body can convey the fluid medium with characteristics of strong corrosivity, strong viscosity, micro-particle property, micro-crystallinity and the like.

In a feasible scheme, a washing inlet is formed in the top end of the pump body, a washing sewage draining outlet is formed in the bottom of the pump body, and the washing inlet is used for being connected with a washing pipeline.

In one possible embodiment, the method further comprises: a coupling;

the driving shaft and the output shaft are in transmission connection through the coupler.

In a feasible scheme, a circular groove is formed in the end portion of the output shaft, and a limiting bump is arranged on the inner wall of the circular groove of the output shaft;

the end part of the driving shaft is provided with a limiting groove, and the limiting groove is used for the limiting lug to be embedded.

In one possible embodiment, the method further comprises: a protective cover;

the protective cover is arranged on the pump base and used for shielding the coupler.

In one possible embodiment, the inlet connection pipe is provided with an inlet connection flange, the outlet connection pipe is provided with an outlet connection flange, and the inlet connection flange and the outlet connection flange are respectively used for connecting with a fluid pipeline.

In a feasible scheme, the first bearing frame and the second bearing frame are provided with a plurality of hollowed-out through holes, and the hollowed-out through holes are used for heat dissipation.

In one possible embodiment, the method further comprises: a first bearing cap and a second bearing cap;

the first bearing cover and the second bearing cover are arranged on the first bearing frame and the second bearing frame and are respectively used for shielding the first bearing and the second bearing.

In a possible scheme, two sides of the pump body are provided with first flange connecting parts;

the first bearing frame and the second bearing frame are provided with second flange connecting parts, and the second flange connecting parts are used for being connected with the first flange connecting parts.

In one possible embodiment, the pump base is provided with a plurality of fastening lugs, which are provided with screw holes and are used for fastening.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic illustration of a high life gear slurry pump in an embodiment of the present invention;

FIG. 2 is a schematic view of a pump body in an embodiment of the present invention;

FIG. 3 is a schematic view of a gear in an embodiment of the present invention;

FIG. 4 is a schematic view of the connection of the drive shaft and the output shaft in an embodiment of the present invention;

FIG. 5 is an enlarged partial view of a sheath in an embodiment of the present invention;

fig. 6 is a schematic view of a first bearing frame according to an embodiment of the present invention.

Reference numbers in the figures:

1. a pump mount; 11. a protective cover; 12. fixing the ear; 2. a drive motor; 21. an output shaft; 22. a limiting bump; 3. a pump body; 301. a first flange connection portion; 31. an inlet connection pipe; 32. an outlet connection pipe; 33. a flushing inlet; 34. flushing a sewage draining outlet; 35. an inlet connecting flange; 36. an outlet connecting flange; 401. hollowing out the through hole; 402. a second flange connection portion; 41. a first bearing frame; 42. a second bearing frame; 501. a mechanical seal gland; 51. a drive shaft; 511. a limiting groove; 52. a driven shaft; 61 a driving gear; 62. a driven gear; 71. a first bearing; 72. a second bearing; 8. a coupling; 91. a first bearing gland; 92. a second bearing cap.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for convenience in describing and simplifying the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication connection; either directly or indirectly through intervening media, either internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

As described in the background of the present application, a gear pump is composed of a pump body and two gears, and the two gears are disposed in the pump body in an intermeshing manner to divide the pump body into two spaces. When the gear rotates, the volume of the space on the gear disengagement side is increased from small to large, vacuum is formed, fluid is sucked, and the volume of the space on the gear engagement side is decreased from large to small, so that the fluid is squeezed into the pipeline.

The inventor of the application finds that in the conventional gear pump, the gear shaft is arranged on the left end cover and the right end cover of the pump body through the bearings, when the conveyed fluid has strong corrosivity, the gear pump fails due to corrosion of the bearings, and the service life of the gear pump is shortened; if the bearing made of the non-metallic material is adopted, when the conveyed fluid has the characteristics of strong viscosity, micro-particle property and micro-crystallinity, the bearing cannot bear larger radial torque force, and the bearing can be damaged, so that the service life of the gear pump is shortened.

In order to solve the above problems, the inventor of the present application proposes a technical solution of the present application, and specific embodiments are as follows:

fig. 1 is a schematic view of a long-life gear slurry pump in an embodiment of the present invention, fig. 2 is a schematic view of a pump body in an embodiment of the present invention, fig. 3 is a schematic view of a gear in an embodiment of the present invention, fig. 4 is a schematic view of connection of a drive shaft and an output shaft in an embodiment of the present invention, fig. 5 is a partially enlarged view of a sheath in an embodiment of the present invention, and fig. 6 is a schematic view of a first bearing holder in an embodiment of the present invention. As shown in fig. 1 to 6, the long-life gear slurry pump of the present embodiment includes: the pump comprises a pump base 1, a driving motor 2, a pump body 3, a first bearing frame 41, a second bearing frame 42, a driving shaft 51, a driving gear 61, a driven shaft 52, a driven gear 62, a first bearing 71 and a second bearing 72.

The driving motor 2 and the pump body 3 are fixedly arranged on the pump base 1 and respectively positioned at the left side and the right side of the pump base 1, and the driving motor 2 and the pump body 3 can be fixed on external required equipment through the pump base 1.

The pump body 3 is provided with a hollow inner cavity, the pump body 3 is provided with an inlet connecting pipe 31 and an outlet connecting pipe 32 which are communicated with the inner cavity, the inlet connecting pipe 31 and the outlet connecting pipe 32 of the pump body 3 can be arranged on the front side wall and the rear side wall of the top wall of the pump body 3 and can also be respectively arranged on the front side wall and the rear side wall of the pump body 3. The upper and lower inner walls of the inner cavity of the pump body 3 are arc-shaped, and the first bearing frame 41 and the second bearing frame 42 are respectively fixedly arranged on the outer walls of the left and right sides of the pump body 3.

The driving gear 61 is sleeved on the driving shaft 51, and the driven gear 62 is sleeved on the driven shaft 52.

The driving shaft 51 and the driven shaft 52 are rotatably inserted into the pump body 3, the left and right ends of the driving shaft 51 and the driven shaft 52 penetrate through the left and right end covers of the pump body 3, and the driving shaft 51 and the driven shaft 52 are hermetically connected with the end covers of the pump body 3 through sealing elements such as a mechanical sealing cover 501 (or a dynamic sealing cover). The driving gear 61 and the driven gear 62 are located in the inner cavity of the pump body 3, the driving gear 61 and the driven gear 62 are meshed with each other, the top of the driving gear 61 is tightly matched with the inner wall of the top of the pump body 3 and the bottom of the driven gear 62 is tightly matched with the inner wall of the bottom of the pump body 3, and the driving gear 61 and the driven gear 62 divide the inner cavity of the pump body 3 into two relatively independent closed spaces.

Left and right ends of the driving shaft 51 are respectively provided on the first bearing holder 41 and the second bearing holder 42 through first bearings 71, and left and right ends of the driven shaft 52 are respectively provided on the first bearing holder 41 and the second bearing holder 42 through second bearings 72. And one end (right end) of the driving shaft 51 is in transmission connection with the output shaft 21 of the driving motor 2, the driving shaft 51 is driven to rotate by the driving motor 2 when the driving shaft 51 is opened, and the driving gear 61 and the driven gear 62 are driven to rotate by the driving shaft 51 when the driving shaft 51 rotates, so that fluid is sucked into the pump body from the inlet connecting pipe 31 of the pump body 3 and is discharged out of the pump body from the outlet connecting pipe 32 of the pump body 3, and the fluid is conveyed.

Through the above, it is not difficult to discover that the long-life gear slurry pump of this embodiment, through setting up the pump mount, driving motor, the pump body, first bearing frame, the second bearing frame, the driving shaft, the driving gear, the driven shaft, driven gear, first bearing and second bearing, driving motor and pump body setting are on the pump mount, first bearing frame and second bearing frame set up the left and right sides at the pump body respectively, driving shaft and rotatable the wearing and establishing on the pump body of driven shaft, driving gear and driven gear set up respectively on driving shaft and driven shaft, be located the inner chamber of pump body, driving gear and driven gear meshing set up, and driving shaft and driven shaft set up respectively on first bearing frame and second bearing frame through first bearing and second bearing, the driving shaft is connected with driving motor's output shaft transmission. The high life gear slurry pump of this embodiment for the bearing setting of fixed gear shaft is on the bearing bracket in the pump body outside, and the bearing is contactless with fluid medium in the pump body use, can not receive fluidic corruption, has prolonged the life of the pump body, also makes the fluid medium that the pump body can carry characteristics such as strong corrosivity, strong consistency, microparticle nature and microcrystallite nature.

Optionally, as shown in fig. 2, in the high-life gear slurry pump in this embodiment, a flushing inlet 33 is disposed on a side wall of the top end of the pump body 3, a flushing sewage discharge outlet 34 is disposed at the bottom of the pump body 3, and the flushing inlet 33 and the flushing sewage discharge outlet 34 are both communicated with an inner cavity of the pump body 3. When the gear pump is normally used, the pump body 3 wash the entry 33 and wash drain 34 and pass through the end cap shutoff, when the gear pump needs to clear up, the pump body 3 wash entry 33 with wash the pipe connection and communicate, wash drain 34 and discharge pipe connection and communicate, through the interior high-pressure washing liquid of inputing to the inner chamber of the pump body 3, can wash the pump body inner chamber, the washing liquid is discharged from the drain that washes of bottom, the debris that can be convenient to the internal siltation of pump washs and clears up.

Optionally, as shown in fig. 4 and 5, the long-life gear slurry pump in this embodiment further includes: and a coupling 8.

The coupler 8 is arranged at the end parts of the driving shaft 51 and the output shaft 21 of the driving motor, the driving shaft 51 is in transmission connection with the output shaft 21 through the coupler 8, and when the driving motor 2 is started, the output shaft 21 drives the driving shaft 51 to rotate together.

Further, in the long-life gear slurry pump in this embodiment, a circular groove adapted to the driving shaft 51 is provided at an end of the output shaft 21 of the driving motor 2, a limit protrusion 22 extending in the axial direction is provided on an inner wall of the circular groove of the output shaft 21, and a limit groove 511 provided in the axial direction is provided on a circumferential side wall of a right end of the driving shaft 51.

When the driving shaft 51 is connected with the output shaft 21 of the driving motor 2, the right end of the driving shaft 51 is inserted into the circular groove of the output shaft 21, and the limit bump 22 on the output shaft 21 is inserted into the limit groove 511 of the driving shaft 51, so that the driving shaft 51 is in transmission connection with the output shaft 21 of the driving motor 2. The shaft coupling 8 is sleeved at the joint of the driving shaft 51 and the output shaft 21, and shields the connecting part of the driving shaft 51 and the output shaft 21, so that the safe operation of the pump body is ensured.

Further, as shown in fig. 1, the long-life gear slurry pump in this embodiment further includes: a shield 11.

The front side and the rear side of the protective cover 11 are arranged on the pump base 1, and the protective cover 11 shields the coupler 8, so that the safe operation of the pump body is ensured.

Optionally, in the long-life gear slurry pump in this embodiment, the end of the inlet connecting pipe 31 of the pump body 3 is provided with an inlet connecting flange 35, the end of the outlet connecting pipe 32 of the pump body is provided with an outlet connecting flange 36, and the inlet connecting flange 35 and the outlet connecting flange 36 are used for being connected with a connecting flange on a fluid pipeline, so that the pump body and the fluid pipeline can be conveniently mounted and connected.

Optionally, as shown in fig. 6, in the long-life gear slurry pump in this embodiment, the first bearing frame 41 and the second bearing frame 42 are both provided with a plurality of hollow through holes 401, so that the heat dissipation of the driving shaft, the driven shaft, the first bearing, the second bearing and the sealing part is facilitated when the pump body is used.

Optionally, the long-life gear slurry pump in this embodiment further includes: a first bearing cover 91 and a second bearing cover 92.

The two first bearing covers 91 are respectively arranged on the first bearing frame 41 and the second bearing frame 42 and positioned outside the first bearing 71, and the first bearing covers 91 are abutted against the outer end face of the first bearing 71 and completely shield the first bearing 71 to prevent foreign matters such as dust from entering the first bearing.

Similarly, two second bearing caps 92 are provided, the two second bearing caps 92 are respectively provided on the first bearing frame 41 and the second bearing frame 42 and located outside the second bearing 72, the second bearing caps 92 abut against the outer end face of the second bearing 72 and completely shield the second bearing 72, so as to prevent foreign matters such as dust from entering the second bearing.

Optionally, in the long-life gear slurry pump in this embodiment, the left and right sides of the pump body 3 are provided with first flange connection portions 301, and the first flange connection portions 301 are provided with a plurality of threaded holes.

The extensions of the first bearing frame 41 and the second bearing frame 42 are respectively provided with a second flange connecting part 402, the second flange connecting part 402 is provided with a plurality of through holes, and connecting bolts penetrate through the through holes of the second flange connecting part 402 and are meshed with the threaded holes of the first flange connecting part 301, so that the first bearing frame and the second bearing frame are connected to the left side and the right side of the pump body, and the first bearing frame and the second bearing frame are conveniently connected and fixed.

Optionally, in the long-life gear slurry pump in this embodiment, the pump base 1 is provided with a plurality of fixing lugs 12, the plurality of fixing lugs 12 are arranged at the outer edge of the pump base 1 at intervals, and the fixing lugs 12 are provided with bolt holes, so that the pump base can be conveniently installed and fixed through the connecting bolts.

According to the gear slurry pump, the manufacturing materials of all parts can be selected according to the actual working conditions of users, and the overflowing part of the pump can be made of special metal materials, metal-clad non-metal materials or metal-lined non-metal materials so as to adapt to the conveying of fluid media with strong corrosivity, strong viscosity, microparticle property and microcrystallization; the tooth shapes of a driving gear and a driven gear of the gear slurry pump can adopt one of a gradually-opened shape, a circular arc shape or a thread shape; the shaft seal of the gear slurry pump can adopt mechanical seal and also can adopt dynamic seal so as to meet the requirements in actual production.

In the present invention, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may be directly contacting the first feature and the second feature or indirectly contacting the first feature and the second feature through an intermediate.

Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high life gear slurry pump comprising: the pump comprises a pump seat, a driving motor, a pump body, a first bearing frame, a second bearing frame, a driving shaft, a driving gear, a driven shaft, a driven gear, a first bearing and a second bearing;

2. The long-life gear slurry pump according to claim 1, wherein a flushing inlet is formed at the top end of the pump body, and a flushing sewage drain is formed at the bottom of the pump body, and the flushing inlet is used for being connected with a cleaning pipeline.

3. The high life geared slurry pump of claim 1, further comprising: a coupling;

4. The long-life gear slurry pump according to claim 3, wherein a circular groove is formed at an end portion of the output shaft, and a limiting projection is formed on an inner wall of the circular groove of the output shaft;

5. The high life geared slurry pump of claim 3, further comprising: a protective cover;

6. The long-life gear slurry pump according to claim 1, wherein the inlet connection pipe is provided with an inlet connection flange, the outlet connection pipe is provided with an outlet connection flange, and the inlet connection flange and the outlet connection flange are respectively used for connecting with a fluid pipeline.

7. The long-life gear slurry pump according to claim 1, wherein the first and second bearing frames are provided with a plurality of hollowed-out through holes for dissipating heat.

8. The high life geared slurry pump of claim 1, further comprising: a first bearing cap and a second bearing cap;

9. The long-life gear slurry pump according to claim 1, wherein first flange connection portions are provided on both sides of the pump body;

10. The long-life gear slurry pump according to any one of claims 1 to 9, wherein the pump base is provided with a plurality of fixing lugs, the fixing lugs being provided with bolt holes, the fixing lugs being used for fixing.