Gear pump capable of achieving multi-stage gear meshing pressurization cutting and provided with cleaning openings in two sides

Abstract

The utility model discloses a multi-stage gear meshing pressurization cutting gear pump with cleaning ports on two sides, and relates to the technical field of gear pumps. Comprising a pump body, bearing supports are connected to the two opposite sides of the pump body, a multi-stage gear assembly is connected to the two bearing supports, cleaning openings are formed in the two opposite sides, not provided with the bearing supports, of the pump body, and a cleaning opening cover plate is connected to each cleaning opening; a pump cavity partition plate is arranged in the pump body to form a first pump cavity and a second pump cavity, and the first pump cavity and the second pump cavity are communicated through an internal flow channel arranged in the pump body. Self-suction and lift can be increased, foreign matter blocking is avoided, and the gears are convenient to maintain and overhaul due to the arrangement of the cleaning openings in the two sides.

Description

Technical Field

[0001] The utility model relates to the technical field of gear pumps, in particular to a gear pump with multi-stage gear meshing, pressurizing and cutting functions and cleaning ports on both sides. Background Art

[0002] A gear pump is a rotary pump that relies on the change and movement of the working volume formed between the pump cylinder and the meshing gears to transport liquid or increase its pressure.

[0003] The old single-stage, fully enclosed gear pump has the disadvantages of low head, small suction, difficult cleaning and difficult maintenance. Therefore, it is necessary to provide a gear pump with multi-stage gear meshing, pressurized cutting and cleaning ports on both sides to increase self-priming and head, avoid foreign matter jamming and facilitate gear maintenance and repair. Utility Model Content

[0004] The main purpose of the utility model is to provide a gear pump with multi-stage gear meshing, pressurization and cutting, and cleaning ports on both sides. By increasing the number of gear stages and the cleaning ports on both sides, the effects of multi-stage pressurization and multi-stage cutting through multi-stage gear circulation are achieved, and the cover plate can be easily disassembled for internal cleaning and maintenance, so as to solve the problems existing in the prior art.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A multi-stage gear meshing, pressurized, and cutting gear pump with cleaning ports on both sides, comprising a pump body, bearing brackets connected to opposite sides of the pump body, multi-stage gear assemblies connected to the two bearing brackets, cleaning ports provided on opposite sides of the pump body where no bearing brackets are provided, and each cleaning port connected to a cleaning port cover plate;

[0007] A pump cavity partition is provided inside the pump body to form a first pump cavity and a second pump cavity. The first pump cavity and the second pump cavity are connected through an internal flow channel provided in the pump body.

[0008] Furthermore, the multi-stage gear assembly includes a first cavity gear set and a second cavity gear set connected to each other through a pump shaft, the first cavity gear set is located in the first pump cavity, and the second cavity gear set is located in the second pump cavity.

[0009] Furthermore, an upper gear cavity and a lower gear cavity are provided inside the pump body, and the first cavity gear set includes a first upper gear and a first lower gear, the first upper gear is connected to the bearing bracket and is located in the upper gear cavity, and the first lower gear is connected to the bearing bracket and is located in the lower gear cavity.

[0010] Furthermore, the second cavity gear set includes a second upper gear and a second lower gear, the second upper gear is connected to the bearing bracket and is located in the upper gear cavity, the second lower gear is connected to the bearing bracket and is located in the lower gear cavity, the first upper gear and the second upper gear are connected through the upper gear pump shaft, and the first lower gear and the second lower gear are connected through the lower gear pump shaft.

[0011] Furthermore, the bearing bracket is provided with a bearing and a skeleton oil seal, and the multi-stage gear assembly is connected to the bearing bracket via the bearing.

[0012] Furthermore, a bearing cover is installed on the bearing bracket.

[0013] Furthermore, the skeleton oil seal can be replaced by a mechanical seal.

[0014] Furthermore, the top of the pump body is provided with two through openings, and the through openings are connected to the interior of the pump body.

[0015] Furthermore, the cleaning port cover is detachably connected to the pump body by bolts.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The multi-stage gear assembly can pressurize and cut the fluid in multiple stages within the pump body, increasing the self-priming force and lift and preventing foreign matter from getting stuck.

[0018] The arrangement of the cleaning port and the cleaning port cover facilitates internal cleaning and is convenient for inspection and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of the pump body.

[0020] Figure 2 A top view of the pump body.

[0021] Figure 3 A side view of the pump body.

[0022] Figure 4 Schematic diagram of the interior of the pump body.

[0023] Figure 5 This is a schematic diagram of the disassembly of the pump body and the cleaning port cover.

[0024] Figure 6 for Figure 5 AA section disassembly diagram.

[0025] Among them, 1-pump body; 2-bearing bracket; 3-cleaning port; 4-first upper gear; 5-first lower gear; 6-second upper gear; 7-second lower gear; 8-cleaning port cover; 9-internal flow channel; 10-first pump chamber; 11-second pump chamber; 12-through port; 13-pump chamber partition; 14-upper gear chamber; 15-lower gear chamber. DETAILED DESCRIPTION

[0026] The technical solution of the present utility model is further described below through the accompanying drawings and embodiments.

[0027] Example

[0028] Combine Figure 1-6 The utility model provides a gear pump with multi-stage gear meshing, boosting and cutting, and cleaning ports on both sides, including a pump body 1 with four circumferential sides, and bearing brackets 2 are connected to the opposite sides of the pump body 1, and a multi-stage gear assembly is connected to the two bearing brackets 2. The multi-stage gear assembly is used to achieve two-stage pressurization, increase self-priming and lift; cleaning ports 3 are provided on the opposite sides of the pump body 1 where no bearing bracket 2 is provided, and each cleaning port 3 is connected to a cleaning port cover 8. The arrangement of the cleaning port 3 and the cleaning port cover 8 facilitates cleaning of the interior and facilitates inspection and maintenance; a pump cavity partition 13 is provided inside the pump body 1 to form a first pump cavity 10 and a second pump cavity 11, and the first pump cavity 10 and the second pump cavity 11 are connected via an internal flow channel 9 provided in the pump title 1.

[0029] The multi-stage gear assembly includes a first cavity gear set and a second cavity gear set interconnected by a pump shaft, the first cavity gear set is located in the first pump cavity 10, and the first cavity gear set is primary pressurized in the first pump cavity 10, the second cavity gear set is located in the second pump cavity 11, and the second cavity gear set is secondary pressurized in the second pump cavity 11; during operation, the multi-stage gear assembly in this embodiment is a two-stage gear assembly, after the first cavity gear set pressurizes and cuts the fluid through gear meshing, the fluid is transferred to the gear meshing pressurized and cut of the second cavity gear set through the internal flow channel 9, and finally flows out through the through port serving as the outlet, thereby achieving the function of increasing self-priming force and lift.

[0030] In some other embodiments, the multi-stage gear assembly may be a multi-stage pressure-cutting assembly such as a three-stage gear meshing assembly, a four-stage gear meshing assembly, or a five-stage gear meshing assembly.

[0031] An upper gear cavity 14 and a lower gear cavity 15 are provided inside the pump body 1. The first cavity gear set includes a first upper gear 4 and a first lower gear 5. The first upper gear 4 is connected to the bearing 2 and is located in the upper gear cavity 14. The first lower gear 5 is connected to the bearing bracket 2 and is located in the lower gear cavity 15.

[0032] The second cavity gear set includes a second upper gear 6 and a second lower gear 7. The second upper gear 6 is connected to the bearing bracket and is located in the upper gear cavity 14. The second lower gear 7 is connected to the bearing bracket 2 and is located in the lower gear cavity 15. The first upper gear 4 and the second upper gear 6 are connected through the upper gear pump shaft, and the first lower gear 5 and the second lower gear 7 are connected through the lower gear pump shaft. The operation of the pump can be achieved by driving the gear pump shaft.

[0033] The bearing bracket 2 is provided with a bearing and a skeleton oil seal, and the multi-stage gear assembly is connected to the bearing bracket via the bearing, thereby achieving stable operation and having good sealing performance.

[0034] In some other embodiments, the skeleton oil seal may be replaced by a mechanical seal, and the mechanical seal is a sealing ring or a sealing gasket.

[0035] A bearing cover is installed on the bearing bracket 2 to ensure that the position of the bearing is fixed.

[0036] The top of the pump body 1 is provided with two through openings 12 , which are communicated with the interior of the pump body 1 , and can realize the functions of feeding and discharging.

[0037] The cleaning port cover plate 8 is detachably connected to the pump body 1 by bolts, and is easy to disassemble and install.

[0038] The four gears inside the pump body 1 are arranged side by side to form two mutually meshing gear sets, supported by two bearing brackets 2 and installed in the upper gear cavity 14 and the lower gear cavity 15 respectively. The two gear sets are separated by a pump cavity partition 13, forming a first cavity gear set in the first pump cavity 10 and a second cavity gear set in the second pump cavity 11, thus forming a two-stage pressurization and cutting. The fluid enters the pump body through the port 12, passes through the first pump cavity 10, and is initially pressurized and cut by the first upper gear 4 and the first lower gear 5. After passing through the internal flow channel 9 of the pump body 1, it enters the second pump cavity 11. After the second meshing and pressurization and cutting of the second upper gear 6 and the second lower gear 7, it is discharged through another port 12, thus achieving the suburb effect of secondary pressurization and cutting. If there is foreign matter stuck or the internal gear structure needs to be repaired and maintained, it can be cleaned and repaired through the cleaning port 3 on both sides of the pump body 1 and the cleaning port cover 8 on both sides.

[0039] As an optimization, the cleaning port 3 can be set as a two-cavity opening.

[0040] The gear pump disclosed in this embodiment determines the inlet and outlet directions by controlling the forward and reverse rotation of the pump shaft. The fluid enters from the inlet through the first set of gears for the first pressurization and cutting, then passes through the internal flow channel into the second set of parallel gears for the second pressurization and cutting, and is discharged through the outlet.

[0041] The gear pump in this embodiment can be made of a material selected according to the material composition of the conveyed material, and can convey most of the fluids that can flow, such as stainless steel, gray iron, ductile iron or cast steel.

[0042] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A gear pump with multi-stage gear meshing, boosting and cutting, and cleaning ports on both sides, characterized in that: The pump body comprises a pump body, wherein two opposite sides of the pump body are connected to bearing brackets, and the two bearing brackets are connected to a multi-stage gear assembly. Two opposite sides of the pump body where no bearing brackets are provided are provided with cleaning ports, and each cleaning port is connected to a cleaning port cover plate; A pump cavity partition is provided inside the pump body to form a first pump cavity and a second pump cavity. The first pump cavity and the second pump cavity are connected through an internal flow channel provided in the pump body.

2. A multi-stage gear meshing, boosting and cutting gear pump with cleaning ports on both sides as claimed in claim 1, characterized in that: The multi-stage gear assembly includes a first cavity gear set and a second cavity gear set connected to each other through a pump shaft, the first cavity gear set is located in the first pump cavity, and the second cavity gear set is located in the second pump cavity.

3. A multi-stage gear meshing, boosting and cutting gear pump with cleaning ports on both sides as claimed in claim 2, characterized in that: An upper gear cavity and a lower gear cavity are provided inside the pump body. The first cavity gear set includes a first upper gear and a first lower gear. The first upper gear is connected to the bearing bracket and is located in the upper gear cavity. The first lower gear is connected to the bearing bracket and is located in the lower gear cavity.

4. A multi-stage gear meshing, pressurized cutting gear pump with cleaning ports on both sides as claimed in claim 3, characterized in that: The second cavity gear set includes a second upper gear and a second lower gear, the second upper gear is connected to the bearing bracket and is located in the upper gear cavity, the second lower gear is connected to the bearing bracket and is located in the lower gear cavity, the first upper gear and the second upper gear are connected through the upper gear pump shaft, and the first lower gear and the second lower gear are connected through the lower gear pump shaft.

5. A multi-stage gear meshing, pressurized cutting gear pump with cleaning ports on both sides as claimed in claim 1, characterized in that: The bearing bracket is provided with a bearing and a skeleton oil seal, and the multi-stage gear assembly is connected to the bearing bracket through the bearing.

6. A multi-stage gear meshing, boosting and cutting gear pump with cleaning ports on both sides as claimed in claim 5, characterized in that: A bearing cover is installed on the bearing bracket.

7. A multi-stage gear meshing, pressurized cutting gear pump with cleaning ports on both sides as claimed in claim 5, characterized in that: The skeleton oil seal can be replaced by a mechanical seal.

8. A multi-stage gear meshing, pressurized cutting gear pump with cleaning ports on both sides as claimed in claim 1, characterized in that: The top of the pump body is provided with two through openings, and the through openings are communicated with the interior of the pump body.

9. A multi-stage gear meshing, boosting and cutting gear pump with cleaning ports on both sides as claimed in claim 1, characterized in that: The cleaning port cover is detachably connected to the pump body via bolts.

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