CN218207732U

CN218207732U - Gear type metering pump

Info

Publication number: CN218207732U
Application number: CN202222620840.0U
Authority: CN
Inventors: 林焕东; 林叶承; 林叶富; 吕云东
Original assignee: Guangzhou Tianyuan Silicone Machine Technology Co ltd
Current assignee: Guangzhou Tianyuan Silicone Machine Technology Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-01-03
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses a gear type metering pump, which comprises a gear plate, wherein the gear plate is provided with a gear groove, a feeding groove and a discharge port positioned on the side surface, the feeding groove and the discharge port are respectively positioned on two sides of the gear groove, the gear groove comprises a first gear space for accommodating a driving gear and a second gear space for accommodating a driven gear, and the driven gear is meshed with the driving gear; the upper shell is arranged above the gear plate, an oil guide groove is arranged in the upper shell, one end of the oil guide groove is communicated to an input shaft of the driving gear and a rotating shaft of the driven gear, and the other end of the oil guide groove is communicated to an oil filling port on the surface of the upper shell; the lower shell is arranged below the gear plate and limits axial movement of the driving gear or the driven gear together with the upper shell, and a feeding port is formed in the lower shell and communicated to the feeding groove. The utility model discloses a split type structure is convenient for carry out quick assembly disassembly, is equipped with in its inner structure moreover and leads the oil groove, is convenient for guide lubricating oil to lubricate in the gear shaft.

Description

Gear type metering pump

Technical Field

The utility model relates to a gear formula measuring pump among the measuring pump technical field.

Background

The metering pump, also called a quantitative pump or a proportional pump, can maintain a constant flow rate and simultaneously complete the functions of conveying, metering and adjusting, thereby simplifying the production process flow and being widely used in the fields of petrochemical industry, pharmacy, food and the like which have more accurate requirements on the consumption of raw materials.

The metering pump may be classified into a reciprocating metering pump and a rotary metering pump according to the operation mode of the metering pump. The reciprocating metering pump mainly forms vacuum through the reciprocating motion of the plunger in the cavity so as to quantitatively pump raw materials; the rotary metering pump generates pressure difference in the two side chambers through the rotation of the revolving body, the feedstock is discharged from the inlet port to the outlet port by a pressure differential. Wherein the gear type metering pump belongs to one of rotary metering pumps. The disengaged side of the gear type metering pump is a suction cavity, the entering engaged side is a discharge cavity, and the raw materials are filled between the teeth and reach the discharge cavity from the suction cavity along the inner wall of the gear cavity.

Because the gear in the gear formula measuring pump is in high pressure environment work always, and the extrusion of raw materials to the gear also can play the reaction power moreover, long-time operation can aggravate the wearing and tearing of gear, therefore in order to make the discharge amount of gear formula measuring pump more accurate, still need often maintain and overhaul it, the dismouting process is comparatively loaded down with trivial details. Moreover, the gear works in a closed space, the lubricating oil in the gear is easy to lose under high temperature and high pressure and difficult to supplement, this also leads to a further reduction in the service life of the gear.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a gear formula measuring pump, can conveniently install and remove and carry out the later maintenance, can supply lubricating oil to the measuring pump in work moreover.

According to the embodiment of the utility model provides a gear type measuring pump is provided, include:

the gear plate is provided with a gear groove, a feeding groove and a discharging hole, wherein the gear groove, the feeding groove and the discharging hole are communicated with each other, the feeding groove and the discharging hole are respectively positioned on two sides of the gear groove, and the gear groove comprises a first gear space and a second gear space;

a drive gear spatially fitted to the first gear and rotatable therein, the input shaft of the driving gear extends upwards;

a driven gear spatially fitted to the second gear and rotatable therein, the driven gear being engaged with the driving gear;

the upper shell is arranged above the gear plate, an input shaft of the driving gear can be exposed out of the upper shell, an oil guide groove is arranged in the upper shell, one end of the oil guide groove is communicated to the input shaft of the driving gear and a rotating shaft of the driven gear, and the other end of the oil guide groove is communicated to an oil filling port on the surface of the upper shell;

the lower shell is arranged below the gear plate and limits axial movement of the driving gear or the driven gear together with the upper shell, and a feeding port is formed in the lower shell and communicated to the feeding groove.

According to the embodiment of the present invention, further, the discharge gate with gear groove junction is equipped with tubaeform opening.

According to the embodiment of the present invention, further, and a layer of sealing ring is arranged at the edge of the feeding port.

According to the utility model discloses, furtherly, go up the casing including the last gear apron and the last closing cap board that paste each other and connect, the casing is including the lower gear apron and the lower closing cap board that paste each other and connect down, go up the surface of closing cap board with the surface of closing cap board all is equipped with the recess down, the recess is in go up the casing or constitute after the casing accomplishes the equipment down lead the oil groove.

According to the utility model discloses, furtherly, go up the gear cover plate with lower gear cover plate all is equipped with pressure relief groove, two pressure relief groove is located respectively the discharge gate with the junction top and the below in gear groove.

According to the utility model discloses, furtherly, gear formula measuring pump still includes the bearing, the upper gear apron with lower gear apron all is equipped with and is used for the holding the bearing frame of bearing, the driving gear with driven gear all passes through the bearing rotates and is connected to the upper gear apron with lower gear apron.

According to the utility model discloses, furtherly, go up the closing cap board with the input shaft junction of driving gear installs the sealing ring.

According to the utility model discloses, furtherly, install on the upper cover plate and be used for fixing the end cover of sealing ring.

According to the embodiment of the utility model provides a, furtherly, go up the gear apron go up the closing cap board down the gear apron with the closing cap board all is equipped with convenient to detach's step in border department down.

According to the embodiment of the utility model provides, furtherly, the gear plate go up the gear cover board go up the apron down the gear cover board with the apron all is equipped with a plurality of and is used for interconnect's locating hole down.

The utility model discloses beneficial effect includes at least: the utility model discloses a split type structure is convenient for carry out quick assembly disassembly, is equipped with in its inner structure moreover and leads the oil groove, is convenient for guide lubricating oil to lubricate in the gear shaft.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

Fig. 1 is an overall sectional view of a gear type metering pump according to an embodiment of the present invention;

FIG. 2 is a structural diagram of a gear plate in the gear type metering pump according to the embodiment of the present invention;

FIG. 3 is a structural diagram of an upper gear cover plate in the gear type metering pump according to the embodiment of the present invention;

FIG. 4 is a structural diagram of an upper sealing cover plate in the gear type metering pump according to the embodiment of the present invention;

FIG. 5 is a structural diagram of a lower gear cover plate in the gear type metering pump according to the embodiment of the present invention;

fig. 6 is a structural diagram of a lower sealing cover plate in the gear type metering pump of the embodiment of the present invention.

Reference numerals: 100-gear plate, 110-gear groove, 111-first gear space, 112-second gear space, 120-feeding groove, 130-discharging hole, 200-driving gear, 300-driven gear, 400-upper shell, 410-oil filling port, 420-upper gear cover plate, 430-upper cover plate, 500-lower shell, 510-feeding hole, 511-sealing ring, 520-lower gear cover plate, 530-lower cover plate, 600-groove, 700-pressure relief groove, 800-bearing, 810-bearing seat, 900-sealing ring, 910-sealing end cover, 1000-step and 1100-positioning hole.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of meanings are one or more, a plurality of meanings are two or more, and the terms greater than, smaller than, exceeding, etc. are understood as excluding the number, and the terms greater than, lower than, within, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Because the gear in the gear formula measuring pump is in high pressure environment work always, and the extrusion of raw materials to the gear also can play the reaction power moreover, long-time operation can aggravate the wearing and tearing of gear, therefore in order to make the discharge amount of gear formula measuring pump more accurate, still need often maintain and overhaul it, the dismouting process is comparatively loaded down with trivial details. Moreover, the gear works in a closed space, and lubricating oil in the gear is easy to lose under high temperature and high pressure and difficult to supplement, so that the service life of the gear is further shortened.

The embodiment of the utility model provides a gear formula measuring pump adopts range upon range of and split type design, and quick assembly disassembly when the later maintenance of being convenient for promotes the work efficiency of later maintenance. And this gear formula measuring pump is equipped with in and leads the oil groove, can add mechanical lubricating oil through outside oil filler hole, and mechanical lubricating oil realizes lubricating along leading in the axis of rotation of oil groove infiltration gear, keeps the lubricated operating condition of gear, prolongs the working life of gear axis of rotation, also prevents to take place gear axis of rotation wearing and tearing and lead to the problem of precision reduction simultaneously.

Referring to fig. 1, in the gear type metering pump according to the embodiment of the present invention, including a gear plate 100, a driving gear 200, a driven gear 300, an upper case 400, and a lower case 500. Wherein the gear plate 100 is a core member for placing the driving gear 200 and the driven gear 300, and the processes of the input and output of the raw material also substantially occur in the gear plate 100. Referring to fig. 2, the gear plate 100 is provided with a gear groove 110, a feeding groove 120 and a discharging hole 130 which are communicated with each other, and the feeding groove 120 and the discharging hole 130 are respectively located at both sides of the gear groove 110. The gear groove 110 is a symmetrical double ring shape, and includes a first gear space 111 and a second gear space 112, the driving gear 200 is adapted to the first gear space 111 and rotates therein, the driven gear 300 is adapted to the second gear space 112 and rotates therein, and the driving gear 200 is engaged with the driven gear 300 and can drive the driven gear to rotate. The input shaft of the driving gear 200 extends upward, and can be connected to and driven by an external driving device.

Referring to the top view of the gear plate 100 in fig. 2, when the driving gear 200 rotates counterclockwise, the driven gear 300 correspondingly rotates clockwise, the feeding groove 120 is located at the disengaged side of the two gears, and the discharging hole 130 is located at the engaged side of the two gears. Since the inter-tooth space in the disengaged side is released, the pressure in the feeding groove 120 increases to generate a pressure difference, the raw material is embedded into the inter-tooth space, and the inner wall of the fitting gear groove 110 is brought to the discharge hole 130 by the gears. As the driving gear 200 is re-engaged with the driven gear 300, the raw material between the teeth is extruded and discharged from the discharge hole 130, thereby completing the quantitative transfer of the raw material. Specifically, in order to make the discharge of the raw material smoother, the connection between the discharge port 130 and the gear groove 110 is opened in a trumpet shape, so that the raw material is transited to the discharge port 130 along an inclined plane when being discharged, and the resistance of the raw material discharge is reduced.

The upper case 400 is installed above the gear plate 100, and the lower case 500 is installed below the gear plate 100 to seal the upper and lower sides of the gear plate 100, respectively, to prevent axial play of the driving gear 200 or the driven gear 300, and to prevent overflow of raw materials. Wherein, last casing 400 is seted up and is supplied the through-hole that the driving gear 200 input shaft exposes, and is equipped with oil guide groove in last casing 400, and oil guide groove's one end communicates to the input shaft of driving gear 200 and driven gear 300's axis of rotation, and oil guide groove's the other end communicates to seting up the oil filler 410 on last casing 400 surface to when adding mechanical lubricating oil at oil filler 410, mechanical lubricating oil can add to gear rotation axis department through oil guide groove and lubricate.

The lower shell 500 is provided with a feeding port 510, which is communicated with the feeding groove 120, so that the raw material moves upward from the feeding port 510 during feeding, thereby more conveniently controlling the feeding amount of the raw material. Specifically, a layer of sealing ring 511 is installed at the edge of the feeding port 510, and is used for enhancing the sealing performance at the interface when being connected with external feeding equipment, and reducing the overflow of raw materials.

In some embodiments, the upper housing 400 and the lower housing 500 are respectively of an integral structure, and in this embodiment, the upper housing 400 and the lower housing 500 in the present gear type metering pump can be further disassembled, the upper housing 400 includes an upper gear cover plate 420 and an upper cover plate 430 attached to each other, and the lower housing 500 includes a lower gear cover plate 520 and a lower cover plate 530 attached to each other. Referring to fig. 4 and 6, grooves 600 are formed on the surfaces of the upper and

lower sheathing plates

430 and 530, and when the upper or lower case 400 or 500 is assembled, the grooves 600 form oil guide grooves through which the lubricating oil flows. The split type installation method is convenient for processing the size and the shape of the oil guide groove, and the oil guide groove is convenient to maintain after later-stage disassembly and assembly.

Further, referring to fig. 3 and 5, the upper gear cover plate 420 and the lower gear cover plate 520 are both provided with pressure relief grooves 700, and the two pressure relief grooves 700 are respectively located above and below the connection between the discharge port 130 and the gear groove 110, and are used for transmitting high pressure generated during gear meshing to the discharge port 130, so as to prevent the local high pressure generated during gear meshing from damaging the gear itself.

Further, this gear formula measuring pump still includes bearing 800, and upper gear apron 420 and lower gear apron 520 all are equipped with the bearing frame 810 that is used for holding bearing 800, and driving gear 200 and driven gear 300 all rotate through bearing 800 and are connected to upper gear apron 420 and lower gear apron 520, can reduce the rotational friction of gear through bearing 800, promote the rotational stability of gear moreover.

Further, a sealing ring 900 is installed at a connection position of the upper cover plate 430 and the input shaft of the driving gear 200, and is used for preventing external dust or other impurities from entering the input shaft of the driving gear 200 to cause input shaft abrasion, and simultaneously preventing lubricating oil in the input shaft from overflowing due to extrusion to cause pollution to an external structure.

Further, a seal end cap 910 for fixing the seal ring 900 is further installed on the upper cover plate 430 for the seal ring 900 to be detached.

Further, the upper gear cover plate 420, the upper cover plate 430, the lower gear cover plate 520, and the lower cover plate 530 are each provided at edges thereof with a step 1000 for easy detachment. When two parts that will paste and connect are separated, can pry two parts as the atress point with this step 1000, promote dismantlement efficiency.

Furthermore, one corner of the gear plate 100, the upper gear cover plate 420, the upper cover plate 430, the lower gear cover plate 520 and the lower cover plate 530 is provided with a notch for guiding the installation position of each component, and the notches of each component should be located at the same position during correct installation, so that the installation efficiency during installation is improved, and meanwhile, the risk of installation errors is reduced.

Further, the gear plate 100, the upper gear cover plate 420, the upper cover plate 430, the lower gear cover plate 520 and the lower cover plate 530 are all provided with a plurality of positioning holes 1100 for mutual connection, and the parts can be fixed to each other through bolt connection. It is easily understood that other connection methods may be adopted to fix the components, and the details are not described herein.

Furthermore, the gear plate 100, the upper gear cover plate 420, the upper cover plate 430, the lower gear cover plate 520 and the lower cover plate 530 are made of stainless steel, so that the gear metering pump has higher structural strength and is not easy to corrode, and the service life of the gear metering pump is prolonged.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims

1. A gear-type metering pump, comprising:

a drive gear spatially fitted to the first gear and rotatable therein, an input shaft of the drive gear extending upward;

2. The gear-type metering pump of claim 1, wherein: the discharge gate with gear groove junction is equipped with tubaeform opening.

3. A gear type metering pump according to claim 1, wherein: and a layer of sealing ring is arranged at the edge of the feeding port.

4. A gear type metering pump according to claim 1, wherein: the upper shell comprises an upper gear cover plate and an upper cover plate which are attached to each other, the lower shell comprises a lower gear cover plate and a lower cover plate which are attached to each other, grooves are formed in the surfaces of the upper cover plate and the lower cover plate, and the grooves form the oil guide groove after the upper shell or the lower shell is assembled.

5. The gear-type metering pump of claim 4, wherein: the upper gear cover plate and the lower gear cover plate are both provided with pressure relief grooves, and the two pressure relief grooves are respectively positioned above and below the joint of the discharge hole and the gear groove.

6. A gear type metering pump according to claim 4, wherein: the gear type metering pump also comprises a bearing, the upper gear cover plate and the lower gear cover plate are respectively provided with a bearing seat for accommodating the bearing, the driving gear and the driven gear are both rotationally connected to the upper gear cover plate and the lower gear cover plate through the bearings.

7. A gear type metering pump according to claim 4, wherein: and a sealing ring is arranged at the connection position of the upper cover plate and the input shaft of the driving gear.

8. The gear-type metering pump of claim 7, wherein: and the upper sealing cover plate is provided with a sealing end cover for fixing the sealing ring.

9. The gear-type metering pump of claim 4, wherein: the upper gear cover plate, the upper sealing cover plate, the lower gear cover plate and the lower sealing cover plate are all provided with steps convenient to detach at the edges.

10. The gear-type metering pump of claim 4, wherein: the gear plate, go up the gear apron, go up the upper seal apron, lower gear apron and the lower seal apron all is equipped with a plurality of and is used for interconnect's locating hole.