Rear cover body blank capable of machining various parts

Abstract

The utility model relates to the technical field of high-pressure gear pump rear cover body machining, in particular to a rear cover body blank capable of machining various parts. The rear cover body blank structurally comprises a rear cover body blank body, a front oil inlet cavity, an oil inlet channel, a rear oil inlet cavity, a rear oil outlet cavity, an oil outlet channel, a front oil outlet cavity, a gear cavity and an oil return cavity are formed in the rear cover body blank body, the front oil inlet cavity is connected with the rear oil inlet cavity through the oil inlet channel, and the rear oil inlet cavity is connected with the oil return cavity. The front oil outlet cavity is connected with the rear oil outlet cavity through an oil outlet channel, and the front oil outlet cavity is connected with the gear cavity. According to the rear cover body blank capable of machining the various parts, six different rear cover bodies can be machined according to needs through one rear cover body blank, and on the premise that the use requirement is met, the production cost is greatly reduced, the production process is simplified, and the design and production cycle is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure gear pump rear cover processing, in particular to a rear cover blank capable of processing a variety of parts. Background Art

[0002] The high-pressure gear pump is a common energy conversion device. It is a component that provides hydraulic fluid energy to the hydraulic system. It converts mechanical energy into fluid hydraulic energy by driving a pair of gears to rotate through a prime mover. In order to ensure high-pressure sealing, the high-pressure oil needs to be sealed in the cavity between the side plate, gear and housing with a rear cover. Due to the limitation of installation space, the arrangement of the oil inlet and outlet of the hydraulic gear pump has six common structural styles: side inlet and side outlet, side inlet and rear outlet, rear inlet and rear outlet, rear inlet and side outlet, front side outlet, and front rear outlet. The past practice in the industry is: in order to process parts with six different structures, six professional blanks need to be designed respectively, and then cast and processed.

[0003] In order to meet the installation space requirements of different equipment on the market and according to different design specifications, six professional blanks are designed for the six common gear pump oil port arrangements, namely side inlet and side outlet, side inlet and rear outlet, rear inlet and rear outlet, rear inlet and side outlet, front side outlet, and front rear outlet. These blanks are then cast and processed to meet the needs of the six two-piece oil port arrangements. The result is that there are many types of blanks, a small amount of casting in a single batch, great difficulty in management, low mold utilization, and high inventory costs. Summary of the invention

[0004] In order to solve the problems of the prior art, the utility model provides a rear cover body blank that can be used to process a variety of parts. Through one rear cover body blank, six different rear cover bodies can be produced as needed. On the premise of meeting the use requirements, the production cost is greatly reduced, the production process is simplified, and the design and production cycle is shortened.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A rear cover blank capable of processing a variety of parts comprises a rear cover blank body, on which a forward oil chamber (1), an oil inlet passage (2), a rear oil inlet chamber (4), a rear oil outlet chamber (7), an oil outlet passage (9), a front oil outlet chamber (10), a gear chamber (11), and an oil return chamber (12) are respectively arranged, wherein the forward oil chamber (1) is connected to the rear oil inlet chamber (4) via the oil inlet passage (2), the rear oil inlet chamber (4) is connected to the oil return chamber (12), and the front oil outlet chamber (10) is connected to the rear oil outlet chamber (11) via the oil outlet passage (9). An oil outlet chamber (7), the front oil outlet chamber (10) is connected to the gear chamber (11), a first oil inlet to be processed portion (3) is provided on the rear cover body blank body on the side of the rear oil inlet chamber (4), a second oil inlet to be processed portion (5) is provided on the rear cover body blank body below the rear oil inlet chamber (4), a first oil outlet to be processed portion (6) is provided on the rear cover body blank body below the rear oil outlet chamber (7), and a second oil outlet to be processed portion (8) is provided on the rear cover body blank body on the side of the rear oil outlet chamber (7).

[0007] Preferably, the first oil inlet is processed at the portion to be processed (3) of the first oil inlet, and the second oil outlet is processed at the portion to be processed (8), thereby forming a side-inlet and side-outlet high-pressure gear pump.

[0008] Preferably, the first oil inlet is processed at the portion to be processed (3) of the first oil inlet, and the first oil outlet is processed at the portion to be processed (6) of the first oil outlet, thereby forming a side-inlet and rear-outlet high-pressure gear pump.

[0009] Preferably, the second oil inlet is processed at the portion to be processed (5) of the second oil inlet, and the first oil outlet is processed at the portion to be processed (6) of the first oil outlet, thereby forming a rear-in and rear-out high-pressure gear pump.

[0010] Preferably, the second oil inlet is processed at the portion to be processed (5) of the second oil inlet, and the second oil outlet is processed at the portion to be processed (8), thereby forming a rear-inlet and side-outlet high-pressure gear pump.

[0011] Preferably, a second oil outlet is processed at the portion to be processed (8) for the second oil outlet, thereby forming a forward side-outlet high-pressure gear pump.

[0012] Preferably, the first oil outlet is processed at the portion (6) of the second oil outlet to be processed, forming a forward-discharge and rear-discharge type high-pressure gear pump.

[0013] The beneficial effects brought by the technical solution provided by the utility model are:

[0014] 1. In terms of design, by designing a rear cover blank structure for a gear pump, it can be used to process a variety of parts, which greatly simplifies the drawing and calculation work, shortens the design cycle and production cycle, and reduces labor costs;

[0015] 2. In terms of manufacturing, the casting batches are reduced, the number of single batches of blanks of the same specifications is greatly increased, production efficiency is improved, and management costs are reduced;

[0016] 3. In terms of products, one blank can be processed into a variety of parts, with good blank interchangeability, stable quality and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a structural front view of a rear cover blank that can process multiple parts according to the utility model;

[0019] Figure 2 for Figure 1 A-A half section view;

[0020] Figure 3 It is a schematic structural diagram of a side-in and side-out solution for processing a rear cover blank of the utility model that can process a variety of parts;

[0021] Figure 4 It is a schematic structural diagram of a side-in and rear-out solution for processing a rear cover blank of the utility model that can process various parts;

[0022] Figure 5 It is a schematic structural diagram of a back-in and back-out scheme for processing a rear cover blank of the utility model with multiple parts;

[0023] Figure 6 It is a schematic structural diagram of a rear-entry and side-exit scheme of a rear cover blank capable of processing a variety of parts according to the utility model;

[0024] Figure 7 It is a schematic structural diagram of a forward and side-out scheme for processing a rear cover blank of the utility model that can process a variety of parts;

[0025] Figure 8 It is a schematic structural diagram of a forward-and-backward-outward solution for processing a rear cover blank of the utility model for processing various parts. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings. Example

[0027] As attached Figure 1 , 2 As shown, this embodiment provides a rear cover blank that can be used to process a variety of parts. Its structure includes a rear cover blank body, and the rear cover blank body is respectively provided with a forward oil chamber (1), an oil inlet passage (2), a rear oil inlet chamber (4), a rear oil outlet chamber (7), an oil outlet passage (9), a front oil outlet chamber (10), a gear chamber (11), and an oil return chamber (12). The forward oil chamber (1) is connected to the rear oil inlet chamber (4) through the oil inlet passage (2), the rear oil inlet chamber (4) is connected to the oil return chamber (12), and the front oil outlet chamber (10) is connected to the rear oil outlet chamber (11) through the oil outlet passage (9). The rear oil outlet chamber (7), the front oil outlet chamber (10) is connected to the gear chamber (11), characterized in that a first oil inlet to be processed portion (3) is provided on the rear cover body blank body on the side of the rear oil inlet chamber (4), a second oil inlet to be processed portion (5) is provided on the rear cover body blank body below the rear oil inlet chamber (4), a first oil outlet to be processed portion (6) is provided on the rear cover body blank body below the rear oil outlet chamber (7), and a second oil outlet to be processed portion (8) is provided on the rear cover body blank body on the side of the rear oil outlet chamber (7).

[0028] When the gear pump is working, the hydraulic oil passes through the rear oil inlet chamber (4) or the oil inlet passage (2) as the gear rotates, and is sucked into the gear chamber (11), completing energy conversion and becoming high-pressure oil, which is pressed into the front oil outlet chamber (10) and discharged through the oil outlet passage (9) and the rear oil outlet chamber (7) in sequence.

[0029] Alternatively, the hydraulic oil directly enters the oil inlet passage (2) from the forward oil chamber (1), is sucked into the gear chamber (11), completes energy conversion, becomes high-pressure oil, is pressed into the front oil outlet chamber (10), and is discharged in sequence through the oil outlet passage (9) and the rear oil outlet chamber (7).

[0030] In the actual process, the back cover blank of the utility model can be processed into the following 6 types of parts, which can be selectively processed according to customer needs:

[0031] 1. Side-in and side-out solution: as shown in the attached Figure 3As shown, only the first oil inlet of the first oil inlet to be processed part (3) and the second oil outlet of the second oil outlet to be processed part (8) are processed. When the gear pump starts working, the flow path of the oil is: entering the pump chamber oil channel through the first oil inlet, and then filling the space in the pump chamber. A pair of gears rotate under the drive of the prime mover. As the gears rotate, the gears mesh to gradually reduce the volume of the oil inlet side of the gear chamber (11). A negative pressure vacuum state is formed in the front oil chamber (1), the oil inlet channel (2), and the rear oil chamber (4) of the gear pump, and the hydraulic oil sucked in by the first oil inlet is continuously transported to the oil outlet side of the gear chamber (11), thereby completing energy conversion, that is, converting mechanical energy into high-pressure hydraulic energy. The high-pressure oil passes through the front oil outlet chamber (10), the oil outlet channel (9), and the rear oil outlet chamber (7) in sequence, and is discharged at the second oil outlet, completing the discharge process.

[0032] 2. Side-in and rear-out solution: as shown in the attached Figure 4 As shown, only the first oil inlet of the first oil inlet to be processed part (3) and the first oil outlet of the first oil outlet to be processed part (6) are processed. When the gear pump starts working, the flow path of the oil is: entering the pump chamber oil channel through the first oil inlet, and then filling the space in the pump chamber. A pair of gears rotate under the drive of the prime mover. As the gears rotate, the gears mesh to gradually reduce the volume of the oil inlet side of the gear chamber (11). A negative pressure vacuum state is formed in the front oil chamber (1), the oil inlet channel (2), and the rear oil chamber (4) of the gear pump, and the hydraulic oil sucked in by the first oil inlet is continuously transported to the oil outlet side of the gear chamber (11), thereby completing energy conversion, that is, converting mechanical energy into high-pressure hydraulic energy. The high-pressure oil passes through the front oil outlet chamber (10), the oil outlet channel (9), and the rear oil outlet chamber (7) in sequence, and is discharged at the first oil outlet, completing the discharge process.

[0033] 3. Last-in-last-out solution: as attached Figure 5 As shown, only the second oil inlet of the second oil inlet to be processed part (5) and the first oil outlet of the first oil outlet to be processed part (6) are processed. When the gear pump starts working, the flow path of the oil is: entering the pump chamber oil channel through the second oil inlet, and then filling the space in the pump chamber. A pair of gears rotate under the drive of the prime mover. As the gears rotate, the gears mesh, causing the volume of the oil inlet side of the gear chamber (11) to gradually decrease, forming a negative pressure vacuum state in the front oil chamber (1), the oil inlet channel (2), and the rear oil inlet chamber (4) of the gear pump, and continuously transporting the hydraulic oil sucked in by the second oil inlet to the oil outlet side of the gear chamber (11), thereby completing energy conversion, that is, converting mechanical energy into high-pressure hydraulic energy. The high-pressure oil passes through the front oil outlet chamber (10), the oil outlet channel (9), and the rear oil outlet chamber (7) in sequence, and is discharged at the first oil outlet, completing the discharge process.

[0034] 4. Rear entry and side exit solution: as shown in the attached Figure 6As shown, only the second oil inlet of the second oil inlet to be processed part (5) and the second oil outlet of the second oil outlet to be processed part (8) are processed. When the gear pump starts working, the flow path of the oil is: entering the pump chamber oil channel through the second oil inlet, and then filling the space in the pump chamber. The pair of gears rotate under the drive of the prime mover. As the gears rotate, the gears mesh to gradually reduce the volume of the oil inlet side of the gear chamber (11). A negative pressure vacuum state is formed in the front oil chamber (1), the oil inlet channel (2), and the rear oil chamber (4) of the gear pump, and the hydraulic oil sucked in by the second oil inlet is continuously transported to the oil outlet side of the gear chamber (11), thereby completing energy conversion, that is, converting mechanical energy into high-pressure hydraulic energy. The high-pressure oil passes through the front oil outlet chamber (10), the oil outlet channel (9), and the rear oil outlet chamber (7) in sequence, and is discharged at the second oil outlet, completing the discharge process.

[0035] 5. Forward and side exit plan: as attached Figure 7 As shown, only the second oil outlet of the second oil outlet to be processed part (8) is processed. When the gear pump starts working, the flow path of the oil is: entering the pump chamber oil channel through the forward oil chamber (1), and then filling the space in the pump chamber. A pair of gears rotate under the drive of the prime mover. As the gears rotate, the gears mesh, causing the volume of the oil inlet side of the gear chamber (11) to gradually decrease, forming a negative pressure vacuum state in the forward oil chamber (1), the oil inlet channel (2), and the rear oil inlet chamber (4) of the gear pump, and continuously transporting the hydraulic oil sucked into the forward oil chamber (1) to the oil outlet side of the gear chamber (11), thereby completing energy conversion, that is, converting mechanical energy into high-pressure hydraulic energy. The high-pressure oil passes through the front oil outlet chamber (10), the oil outlet channel (9), and the rear oil outlet chamber (7) in sequence, and is discharged at the second oil outlet, completing the discharge process.

[0036] 6. Forward and backward plan: as attached Figure 8 As shown, only the first oil outlet of the first oil outlet to be processed part (6) is processed. When the gear pump starts working, the flow path of the oil is: entering the pump chamber oil channel through the forward oil chamber (1), and then filling the space in the pump chamber. A pair of gears rotate under the drive of the prime mover. As the gears rotate, the gears mesh, causing the volume of the oil inlet side of the gear chamber (11) to gradually decrease, forming a negative pressure vacuum state in the forward oil chamber (1), the oil inlet channel (2), and the rear oil inlet chamber (4) of the gear pump, and continuously transporting the hydraulic oil sucked into the forward oil chamber (1) to the oil outlet side of the gear chamber (11), thereby completing energy conversion, that is, converting mechanical energy into high-pressure hydraulic energy. The high-pressure oil passes through the front oil outlet chamber (10), the oil outlet channel (9), and the rear oil outlet chamber (7) in sequence, and is discharged at the first oil outlet, completing the discharge process.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rear cover blank capable of processing a variety of parts, comprising a rear cover blank body, wherein the rear cover blank body is respectively provided with a forward oil chamber (1), an oil inlet passage (2), a rear oil inlet chamber (4), a rear oil outlet chamber (7), an oil outlet passage (9), a front oil outlet chamber (10), a gear chamber (11), and an oil return chamber (12), wherein the forward oil chamber (1) is connected to the rear oil inlet chamber (4) via the oil inlet passage (2), the rear oil inlet chamber (4) is connected to the oil return chamber (12), the front oil outlet chamber (10) is connected to the rear oil outlet chamber (7) via the oil outlet passage (9), and the front oil outlet chamber (10) is connected to the gear chamber (11), characterized in that: A first oil inlet to be processed portion (3) is provided on the rear cover body blank body on the side of the rear oil inlet chamber (4), a second oil inlet to be processed portion (5) is provided on the rear cover body blank body below the rear oil inlet chamber (4), a first oil outlet to be processed portion (6) is provided on the rear cover body blank body below the rear oil outlet chamber (7), and a second oil outlet to be processed portion (8) is provided on the rear cover body blank body on the side of the rear oil outlet chamber (7).

2. A back cover blank capable of processing multiple parts according to claim 1, characterized in that: The first oil inlet is processed at the portion (3) to be processed for the first oil inlet, and the second oil outlet is processed at the portion (8) to be processed for the second oil outlet.

3. A back cover blank capable of processing various parts according to claim 1, characterized in that: The first oil inlet is processed at the portion (3) to be processed for the first oil inlet, and the first oil outlet is processed at the portion (6) to be processed for the first oil outlet.

4. A back cover blank capable of processing various parts according to claim 1, characterized in that: The second oil inlet is processed at the portion (5) to be processed for the second oil inlet, and the first oil outlet is processed at the portion (6) to be processed for the first oil outlet.

5. The back cover blank capable of processing various parts according to claim 1, characterized in that: The second oil inlet is processed at the portion (5) to be processed for the second oil inlet, and the second oil outlet is processed at the portion (8) to be processed for the second oil outlet.

6. The back cover blank capable of processing various parts according to claim 1, characterized in that: The second oil outlet is processed at the portion (8) to be processed for the second oil outlet.

7. The back cover blank capable of processing various parts according to claim 1, characterized in that: The first oil outlet to be processed portion (6) is processed with a first oil outlet.

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