CN213540709U

CN213540709U - Gear water pump

Info

Publication number: CN213540709U
Application number: CN202022340614.8U
Authority: CN
Inventors: 宫伟荃
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-06-25
Anticipated expiration: 2030-10-20

Abstract

The utility model relates to a gear pump technical field is a gear water pump, including the pump body, driving shaft and driven shaft, pump body front portion is equipped with the transmission chamber, and pump body rear portion is equipped with the working chamber. The utility model has the advantages of reasonable and compact structure, screw pump for equal operating mode condition, the equipment volume has been reduced, reduce manufacturing cost and maintenance cost, improve pressure and discharge capacity simultaneously, can also pump water, for traditional gear pump, impurity such as grit and the rust of avoiding water in the working chamber and carrying gets into the transmission intracavity, driven gear and preceding driving gear's rate of wear is reduced, preceding driven gear and preceding driving gear can retrain back driving gear and back driven gear, prevent that back driving gear and back driven gear from producing the impact to the pump body after receiving slight wearing and tearing, can improve performance and increase of service life, it is strong to have the popularization nature, application scope is wide, safety, laborsaving, it is simple and convenient, high efficiency characteristics.

Description

Gear water pump

Technical Field

The utility model relates to a gear pump technical field is a gear water pump.

Background

In the current oil field operation, a plunger pump is generally used for conveying high-pressure fluid, a centrifugal pump is generally used for conveying low-pressure fluid, a screw pump is generally used for conveying medium-pressure fluid, and the screw pump has some defects in application, such as high price, heavy weight, large volume, short service life, small discharge capacity relative to other pumps under the same working condition and unsuitability for pumping water, production and operation are influenced to a certain extent, while the bearing of the traditional gear pump is a needle bearing, the abrasion of the needle bearing can be accelerated in the process of conveying water, the service life is shortened, meanwhile, the conveyed water generally contains impurities such as sand, rust and the like, the traditional gear pump is a hard tooth surface, and the tooth surface is easily damaged by the absorbed impurities when gears are meshed, so that the impact is caused to the gear pump, the failure rate is increased, and the.

Disclosure of Invention

The utility model provides a gear water pump has overcome above-mentioned prior art not enough, and it can effectively solve the problem that the fault rate that bulky, life-span that current screw pump exists is short, the expense is high and traditional gear pump exists is high, application scope is little, the life-span is short.

The technical scheme of the utility model is realized through following measure: a gear water pump comprises a pump body, a driving shaft and a driven shaft, wherein a transmission cavity is arranged at the front part of the pump body, a working cavity is arranged at the rear part of the pump body, a first shaft hole and a second shaft hole are arranged at intervals in the middle of the pump body, the front end of the first shaft hole is communicated with the transmission cavity, the rear end of the first shaft hole is communicated with the working cavity, the driven shaft is arranged in the transmission cavity and the working cavity, the front end and the rear end of the driven shaft are respectively and fixedly arranged on the outer side of the front part and the outer side of the rear part of the driven shaft, a third shaft hole is arranged on the front side of the pump body corresponding to the position of the second shaft hole, the driving shaft is arranged in the working cavity in a sealing and rotating mode, the rear end of the second shaft hole is arranged on the driving shaft on the front side of the pump body after passing through the transmission cavity and the third shaft hole from, the outer side of the rear part of the pump body corresponding to the suction inlet is provided with a discharge port communicated with the working cavity, the rear part of the pump body, the driving shaft, the driven shaft, the rear driving gear and the rear driven gear which are positioned in the working cavity form a gear pump, and the outer side of the middle part of the driving shaft is fixedly provided with a front driving gear meshed with the front driven gear.

The following are further optimization or/and improvement of the technical scheme of the utility model:

the pump body can comprise a pump base, a front end cover and a rear end cover, a transmission groove with a forward opening is formed in the front side of the pump base, a working groove with a backward opening is formed in the rear side of the pump base, a first shaft hole and a second shaft hole are formed in the inner wall of the front side of the working groove at intervals and communicated with the transmission groove, the rear side of the pump base is fixedly installed with the rear end cover in a sealing mode, a working cavity is formed in the front side of the rear end cover and the working groove, a suction inlet and a discharge outlet are respectively formed in the lower side of the rear portion of the pump base, the front end cover is fixedly installed in the front side of the pump base in a sealing mode, the rear side of the front.

The rear side of the front end cover corresponding to the position of the first shaft hole can be provided with a first stepped hole with a backward opening and a diameter which is sequentially reduced from back to front, and the outer side of the front end of the driven shaft and the inner side of the large-diameter section of the first stepped hole are coaxially sleeved with a matched first bearing.

The outer side of the front part of the driving shaft can be sealed and rotatably arranged in the third shaft hole.

But coaxial cover is equipped with assorted second bearing between the anterior inboard of above-mentioned first shaft hole and the driven shaft outside, correspond and be equipped with a plurality of first sealing washer after to in proper order between the first shaft hole inboard and the driven shaft outside of second bearing rear position, coaxial cover is equipped with assorted third bearing between the anterior inboard of second shaft hole and the driving shaft outside, correspond and be equipped with a plurality of second sealing washer after to in proper order by preceding between the second shaft hole inboard and the driving shaft outside of third bearing rear position, coaxial cover is equipped with assorted fourth bearing between the inboard of third shaft hole rear portion and the driving shaft outside, correspond and be equipped with a plurality of third sealing washer before to after in proper order between the third shaft hole inboard and the driving shaft outside of fourth bearing the place ahead position.

The front lower side of the pump base can be fixedly provided with an oil tank, a lubricating oil hole communicated with the oil tank is formed in the inner wall of the lower portion of the transmission cavity, an oil discharge hole is formed in the bottom of the oil tank, an oil plug is screwed in the oil discharge hole in a sealing mode, a water tank is fixedly connected to the lower side of the oil tank, an inner water inlet hole and an outer water inlet hole are formed in the front side of the water tank, an outer water outlet hole is formed in the rear side of the lower end.

And the tooth surface of the rear driving gear and the tooth surface of the rear driven gear can be provided with wear-resistant layers.

The utility model has the advantages of reasonable and compact structure, screw pump for equal operating mode condition, the equipment volume has been reduced, reduce manufacturing cost and maintenance cost, improve pressure and discharge capacity simultaneously, can also pump water, for traditional gear pump, impurity such as grit and the rust of avoiding water in the working chamber and carrying gets into the transmission intracavity, driven gear and preceding driving gear's rate of wear is reduced, preceding driven gear and preceding driving gear can retrain back driving gear and back driven gear, prevent that back driving gear and back driven gear from producing the impact to the pump body after receiving slight wearing and tearing, can improve performance and increase of service life, it is strong to have the popularization nature, application scope is wide, safety, laborsaving, it is simple and convenient, high efficiency characteristics.

Drawings

Fig. 1 is a schematic sectional view of the preferred embodiment of the present invention.

Fig. 2 is a schematic top sectional view of the preferred embodiment of the present invention.

Fig. 3 is a left side view schematic sectional structure of the preferred embodiment of the present invention.

The codes in the figures are respectively: 1 is the pump mount, 2 is the driving shaft, 3 is the driven shaft, 4 is the transmission chamber, 5 is the working chamber, 6 is preceding driving gear, 7 is the back driving gear, 8 is preceding driven gear, 9 is the back driven gear, 10 is the front end lid, 11 is the rear end lid, 12 is first bearing, 13 is the second bearing, 14 is the third bearing, 15 is the fourth bearing, 16 is first sealing washer, 17 is the second sealing washer, 18 is the third sealing washer, 19 is the oil tank, 20 is the lubricating oil hole, 21 is the water tank, 22 is the water inlet, 23 is the oil plug, 24 is the sunction inlet, 25 is the discharge port, 26 is the inlet tube.

Detailed Description

The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.

In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.

The invention will be further described with reference to the following examples and drawings:

as shown in attached figures 1, 2 and 3, the gear water pump comprises a pump body, a driving shaft 2 and a driven shaft 3, wherein a transmission cavity 4 is arranged at the front part of the pump body, a working cavity 5 is arranged at the rear part of the pump body, a first shaft hole and a second shaft hole are arranged at the middle part of the pump body at intervals, the front end of the first shaft hole is communicated with the transmission cavity 4, the rear end of the first shaft hole is communicated with the working cavity 5, the driven shaft 3 is arranged in the transmission cavity 4 and the working cavity 5 at the front end and the rear end of the driven shaft 3 at the rear end, a front driven gear 8 and a rear driven gear 9 are respectively and fixedly arranged at the outer side of the front part and the outer side of the rear part of the driven shaft 3, a third shaft hole is arranged at the front side of the pump body corresponding to the position of the second shaft hole, a driving shaft 2 with the rear end positioned in the working cavity 5 is rotatably arranged, a suction inlet 24 communicated with the working cavity 5 is formed in the outer side of the rear part of the pump body corresponding to the side, where the rear driving gear 7 is separated from the rear driven gear 9, of the rear part of the pump body, a discharge outlet 25 communicated with the working cavity 5 is formed in the outer side of the rear part of the pump body corresponding to the position of the suction inlet 24, the rear driving gear 7 and the rear driven gear 9 in the working cavity 5 form a gear pump, and a front driving gear 6 meshed with a front driven gear 8 is fixedly installed on the outer side of the middle part of the driving shaft 2.

According to the demand, pump body the place ahead is equipped with the motor, and the motor rear end is equipped with the drive shaft, and the drive shaft rear end links together through the shaft coupling transmission with 2 front ends of driving shaft, all passes through the key-type connection between axle and the gear, and back driving gear 7 is the soft face tooth with the gear of back driven gear 9. In the use, for the screw pump of equal operating mode condition, can reduce the equipment volume, can reduce manufacturing cost and maintenance cost, improve pressure and discharge capacity simultaneously, can also pump water, for traditional gear pump, impurity such as the grit that has avoided water in the working chamber 5 and carried and rust gets into transmission chamber 4, reduce preceding driven gear 8 and preceding driving gear 6's rate of wear, preceding driven gear 8 and preceding driving gear 6 can retrain back driving gear 7 and back driven gear 9, prevent that back driving gear 7 and back driven gear 9 from producing the impact to the pump body after receiving slight wearing and tearing, improve performance and increase of service life, the utility model discloses rational in infrastructure and compact, convenient to use has that popularization nature is strong, application scope is wide, safety, laborsaving, simple and convenient, efficient characteristics.

The gear water pump can be further optimized or/and improved according to actual needs:

as shown in fig. 1, 2 and 3, the pump body includes a pump base 1, a front end cover 10 and a rear end cover 11, a transmission groove with a forward opening is arranged on the front side of the pump base 1, a working groove with a backward opening is arranged on the rear side of the pump base 1, a first shaft hole and a second shaft hole, of which the front ends are communicated with the transmission groove, are arranged on the inner wall of the front side of the working groove at intervals, the rear side of the pump base 1 is fixedly installed together with the rear end cover 11 in a sealing manner, a working cavity 5 is formed by the front side of the rear end cover 11 and the working groove, a suction inlet 24 and a discharge outlet 25 are respectively arranged on the lower side and the upper side of the rear portion of the pump base 1, the front end cover 10 is fixedly installed in a sealing manner, a transmission.

According to the requirement, the outer side of the rear end of the pump seat 1 is provided with a rear connecting flange, the rear connecting flange is uniformly provided with a plurality of front and rear through first connecting holes at intervals along the circumferential direction, the rear side of the rear end cover 11 corresponding to each first connecting hole is provided with front and rear through second connecting holes, the rear connecting flange and the rear end cover 11 sequentially pass through the second connecting holes and the first connecting holes corresponding to the positions from back to front through the front end and are fixedly installed together in a sealing mode through rear connecting bolts in threaded connection with rear connecting nuts, a rear sealing gasket can be arranged between the rear side of the pump seat 1 and the front side of the rear end cover 11, the outer side of the front end of the pump seat 1 is provided with a front connecting flange, the front connecting flange is uniformly provided with a plurality of front and rear through third connecting holes at intervals along the circumferential direction, the rear side of the front end cover 10 corresponding to each third connecting hole is provided with a front and rear through fourth connecting holes, the front connecting flange and the rear end cover 11 sequentially pass through the front connecting holes from front to The bolts are fixedly arranged together in a sealing way, and a front sealing gasket can be arranged between the front side of the pump base 1 and the rear side of the front end cover 10. In the use, through setting up front end housing 10 and rear end housing 11, can be convenient for dismouting axle and gear, also can reduce the manufacturing process degree of difficulty, the later maintenance of being convenient for simultaneously.

As shown in fig. 2, a first stepped hole with a backward opening and a diameter decreasing from back to front is formed in the rear side of the front end cover 10 corresponding to the first shaft hole, and a first bearing 12 matched with the outer side of the front end of the driven shaft 3 and the inner side of the large-diameter section of the first stepped hole are coaxially sleeved on the outer side of the front end of the driven shaft.

The first bearing 12 is known in the art as required. In use, with such an arrangement, the strength when the driven shaft 3 rotates can be increased.

As shown in the attached figures 2 and 3, the outer side of the front part of the driving shaft 2 is hermetically and rotatably arranged in the third shaft hole.

In the use process, through the arrangement, the sealing performance of the transmission cavity 4 can be improved, and the failure rate is reduced.

As shown in the attached

drawings

2 and 3, a matched second bearing 13 is coaxially sleeved between the inner side of the front part of the first shaft hole and the outer side of the driven shaft 3, a plurality of first sealing rings 16 are sequentially arranged between the inner side of the first shaft hole corresponding to the rear position of the second bearing 13 and the outer side of the driven shaft 3 from front to back, a matched third bearing 14 is coaxially sleeved between the inner side of the front part of the second shaft hole and the outer side of the driving shaft 2, a plurality of second sealing rings 17 are sequentially arranged between the inner side of the second shaft hole corresponding to the rear position of the third bearing 14 and the outer side of the driving shaft 2 from front to back, a matched fourth bearing 15 is coaxially sleeved between the inner side of the rear part of the third shaft hole and the outer side of the driving shaft 2, and a plurality of third sealing rings 18 are sequentially arranged between the inner.

According to requirements, the second bearing 13, the third bearing 14 and the fourth bearing 15 are all in the prior art, and the first sealing ring 16, the second sealing ring 17 and the third sealing ring 18 are all in the prior art and can be one in number. In the use, through setting up first sealing washer 16 and second sealing washer 17, can separate transmission chamber 4 and working chamber 5, make the water in bearing, preceding driving gear 6 and preceding driven gear 8 and the working chamber 5 and impurity separation such as grit and the rust of carrying, can reduce the failure rate of bearing, also can reduce the wearing and tearing volume of preceding driven gear 8 and preceding driving gear 6, the extension the utility model discloses a life.

As shown in the attached

drawings

1 and 3, an oil tank 19 is fixedly mounted on the lower side of the front portion of the pump base 1, a lubricating oil hole 20 communicated with the oil tank 19 is formed in the inner wall of the lower portion of the transmission cavity 4, an oil discharge hole is formed in the bottom of the oil tank 19, an oil plug 23 is screwed in the oil discharge hole in a sealing mode, a water tank 21 is fixedly connected to the lower side of the oil tank 19 in a sealing mode, a water inlet hole 22 communicated with the inside and the outside is formed in the front side of the water tank 21, a water outlet hole communicated with the inside and.

According to the requirement, an oil filling pipe is fixedly communicated with the oil tank 19, and the inner side of the upper end of the oil filling pipe is connected with a plugging thread in a sealing and threaded mode so as to conveniently fill lubricating oil into the oil tank 19. In the use, through setting up lubricating-oil hole 20, can make lubricating oil in the oil tank 19 get into in the transmission chamber 4, make preceding driving gear 6 and preceding driven gear 8 obtain lubricated reducing wear when the meshing, the life of extension gear, through setting up oil plug 23, demolish oil plug 23 and empty the lubricating oil in the oil tank 19 when overhauing, convenient to overhaul and maintenance, through setting up water tank 21 and inlet tube 26, the gear pump can continuous pumping when continuous operation low temperature water in the water tank 21 of inflow through inlet opening 22, low temperature water and the contact of 19 downside of oil tank reduce the temperature of lubricating oil in the oil tank 19, the extension the utility model discloses a working life.

As shown in fig. 1, 2 and 3, the tooth surface of the rear driving gear 7 and the tooth surface of the rear driven gear 9 are provided with wear-resistant layers.

The wear resistant layer may be a polymer material such as polyurethane, which is well known in the art, according to the requirement. In the use, through such setting, can make back driving gear 7 and back driven gear 9 all have soft face tooth, when the pump sending carries the water of impurity such as grit and rust, back driving gear 7 and back driven gear 9 intermeshing, grit and rust can be discharged through discharge port 25 in the extrusion embedding wearing layer or through the discharge port, have reduced back driving gear 7 and back driven gear 9's wearing and tearing volume, then reduce the fault rate of during operation, also can reduce the maintenance cost.

Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.

Claims

1. A gear water pump is characterized by comprising a pump body, a driving shaft and a driven shaft, wherein a transmission cavity is arranged at the front part of the pump body, a working cavity is arranged at the rear part of the pump body, a first shaft hole and a second shaft hole are arranged at intervals in the middle of the pump body, the front end of the first shaft hole is communicated with the transmission cavity, the rear end of the first shaft hole is communicated with the working cavity, the driven shaft is arranged in the transmission cavity and the working cavity in a sealing and rotating mode, the front end and the rear end of the driven shaft are respectively arranged in the transmission cavity and the working cavity, a front driven gear and a rear driven gear are respectively and fixedly arranged on the outer side of the front part and the outer side of the rear part of the driven shaft, a third shaft hole is arranged on the front side of the pump body corresponding to the position of the second shaft hole, a driving shaft is arranged in the working cavity in a sealing and rotating mode, the rear end of the driving shaft, the outer side of the rear part of the pump body corresponding to the suction inlet is provided with a discharge port communicated with the working cavity, the rear part of the pump body, the driving shaft, the driven shaft, the rear driving gear and the rear driven gear which are positioned in the working cavity form a gear pump, and the outer side of the middle part of the driving shaft is fixedly provided with a front driving gear meshed with the front driven gear.

2. The gear water pump of claim 1, wherein the pump body comprises a pump base, a front cover and a rear cover, a transmission groove with a forward opening is formed in the front side of the pump base, a working groove with a backward opening is formed in the rear side of the pump base, a first shaft hole and a second shaft hole are formed in the inner wall of the front side of the working groove at intervals, the front ends of the first shaft hole and the second shaft hole are communicated with the transmission groove, the rear side of the pump base and the rear cover are fixedly mounted in a sealed mode, a working cavity is formed between the front side of the rear cover and the working groove, the suction inlet and the discharge outlet are respectively formed in the lower side and the upper side of the rear portion of the pump base, the front cover is fixedly mounted in the sealed mode on the front side.

3. The gear water pump as claimed in claim 2, wherein a first stepped hole having a backward opening and a diameter decreasing from back to front is formed at a rear side of the front end cover corresponding to the first shaft hole, and a first bearing is coaxially fitted to an outer side of a front end of the driven shaft and an inner side of a large diameter section of the first stepped hole.

4. The geared water pump according to claim 2 or 3, wherein the outer side of the front portion of the driving shaft is sealingly and rotatably mounted in the third shaft hole.

5. The gear pump according to claim 4, wherein a second bearing is coaxially sleeved between an inner side of a front portion of the first shaft hole and an outer side of the driven shaft, a plurality of first seal rings are sequentially arranged from front to back between an inner side of the first shaft hole corresponding to a rear position of the second bearing and the outer side of the driven shaft, a third bearing is coaxially sleeved between an inner side of a front portion of the second shaft hole and the outer side of the driving shaft, a plurality of second seal rings are sequentially arranged from front to back between an inner side of the second shaft hole corresponding to a rear position of the third bearing and the outer side of the driving shaft, a fourth bearing is coaxially sleeved between an inner side of a rear portion of the third shaft hole and the outer side of the driving shaft, and a plurality of third seal rings are sequentially arranged from back to front between an inner side.

6. A gear water pump according to claim 2, 3 or 5, characterized in that an oil tank is fixedly mounted on the lower side of the front portion of the pump base, a lubricating oil hole communicated with the oil tank is formed in the inner wall of the lower portion of the transmission cavity, an oil discharge hole is formed in the bottom of the oil tank, an oil plug is screwed in the oil discharge hole in a sealing manner, a water tank is fixedly connected to the lower side of the oil tank, a water inlet hole communicated with the inside and the outside is formed in the front side of the water tank, a water outlet hole communicated with the inside and the outside is.

7. The gear water pump as claimed in claim 4, wherein an oil tank is fixedly mounted on the lower side of the front portion of the pump base, a lubricating oil hole communicated with the oil tank is formed in the inner wall of the lower portion of the transmission cavity, an oil discharge hole is formed in the bottom of the oil tank, an oil plug is screwed in the oil discharge hole in a sealing manner, a water tank is fixedly connected to the lower side of the oil tank, a water inlet hole communicated with the inside and the outside is formed in the front side of the water tank, a water outlet hole communicated with the inside and the outside is formed.

8. A gear pump according to claim 1, 2, 3, 5 or 7, wherein the tooth surfaces of the rear drive gear and the rear driven gear are provided with a wear resistant layer.

9. The geared water pump of claim 4, wherein the tooth surfaces of the rear drive gear and the rear driven gear are provided with a wear resistant layer.

10. The geared water pump of claim 6, wherein the tooth surfaces of the rear drive gear and the rear driven gear are provided with a wear resistant layer.