CN213235428U - Balanced type novel single-screw pump capable of intermittently pressing oil - Google Patents
Balanced type novel single-screw pump capable of intermittently pressing oil Download PDFInfo
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- CN213235428U CN213235428U CN202021567753.8U CN202021567753U CN213235428U CN 213235428 U CN213235428 U CN 213235428U CN 202021567753 U CN202021567753 U CN 202021567753U CN 213235428 U CN213235428 U CN 213235428U
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Abstract
The utility model relates to a balanced type novel single screw pump for pressing oil intermittently, which comprises a left screw, a left pump cover, a pump body, a right pump cover, a shaft coupling, a right screw, a port plate, an oil inlet, a left oil outlet, a right oil outlet and a waist-shaped hole; working medium is sucked into the T-shaped inner cavity from the oil inlet of the pump body, is respectively conveyed and compressed to the position of the port plate through screws at two ends with opposite threads, and is continuously pressurized at the position of the port plate when a kidney-shaped hole of the port plate is not communicated with the oil outlet, and is pumped out at high pressure when the kidney-shaped hole of the port plate rotates to be communicated with the oil outlet; the reverse thread design of the left screw and the right screw can effectively balance the axial force of the screws, prevent the axial movement of the screws and improve the stress condition of the screws. The utility model has the advantages of compact structure, small pulsation, stable conveying, convenient adjustment and maintenance, etc.
Description
Technical Field
The utility model belongs to the technical field of hydraulic transmission, concretely relates to novel single-screw pump of balanced type of intermittent type nature pressure oil.
Background
The single-screw pump is widely applied to the fields of conveying low-viscosity media such as water, actually conveying suspensions containing solid particles or short fibers, and conveying very high-viscosity media, and is used in the fields of petroleum, chemical industry, construction, environmental protection, ships, textile, metallurgy, mining, printing and paper making industry, food, medicine, daily chemical industry and the like. The existing single-screw pump mostly adopts an eccentric screw pump, and depends on a metal rotor and a rubber stator of an eccentric shaft, so that the defects that the rubber stator is easy to wear, the service life is only 200h, and the rotor is only about 800h, thereby greatly causing industrial waste. When a screw rod of a screw pump with a single working cavity does work, a large axial force can be generated on the screw rod, so that the screw rod has the danger of shaft breakage, the mechanical seal at an oil outlet is influenced by pressure, and the service life is greatly shortened; meanwhile, when the rotating speed is high, noise and vibration can be increased, and the probability of failure is increased.
The defects are combined, the balanced type novel single-screw pump for intermittently pressing oil is provided, a left screw and a right screw of two sections of opposite spiral lines are fixedly connected and driven through a coupler, axial force generated by a single shaft can be effectively offset during oil pumping through the screws of the two sections of opposite spiral lines, a flow distribution disc is respectively and fixedly installed on the shaft rings of the left screw and the right screw in a coaxial mode, intercommunication and separation of an inner cavity of a pump body and an oil outlet are carried out through rotation of a following screw, and pressurization and intermittent high-pressure pumping of working media are achieved.
Disclosure of Invention
The technical scheme that a novel balanced single-screw pump of intermittent type nature pressure oil adopted is as follows: the pump comprises a left screw 1, a left pump cover 2, a pump body 3, a right pump cover 4, a coupler 5, a right screw 6, a port plate 7, an oil inlet 3-0, a left oil outlet 2-0, a right oil outlet 4-0 and a kidney-shaped hole 7-0; an oil inlet 3-0 is designed at the position of the middle part of the pump body 3 vertical to the axis of the inner cavity to realize the pumping of working medium;
the left pump cover 2 and the right pump cover 4 are fixedly connected to the left side end face and the right side end face of the pump body 3 through bolts and are in sealing connection, adjusting gaskets are mounted at the joints of the left pump cover 2 and the right pump cover 4 and the left side end face and the right side end face of the pump body 3 respectively, a left oil outlet 2-0 is arranged on the left pump cover 2, a right oil outlet 4-0 is arranged on the right pump cover 4 at the same position, and the left oil outlet 2-0 and the right oil outlet 4-0 are designed to have the same diameter;
the left screw 1 is coaxially and fixedly connected with the right screw 6 through a coupler 5, the left screw 1, the right screw 6 and the coupler 5 are coaxially arranged in an inner cavity of the pump body 3, the valve plate 7 is coaxially fixed at a shaft collar of the left screw 1, the valve plate 7 is axially fixed by a sleeve, and a sealing ring is arranged between the shaft collar of the left screw 1 and the valve plate 7 for sealing; the left screw rod 1 is coaxially connected with the left pump cover 2 through a bearing, and a sealing ring is adopted between the shaft body of the left screw rod 1 and the left pump cover 2 for sealing; the shaft head end of the left screw rod 1 is a power input end;
the same port plate 7 is fixedly arranged at the shaft collar of the right screw 6, the port plate 7 is axially fixed by a sleeve, and a sealing ring is arranged between the shaft collar of the right screw 6 and the port plate 7 for sealing; the right screw 6 is coaxially connected with the right pump cover 4 through a bearing, and a shaft head of the right screw 6 is sealed with the right pump cover 4 by a sealing ring;
the flow distribution discs 7 are designed in two same shapes and are coaxially and fixedly installed at the shaft rings of the left screw rod 1 and the right screw rod 6 respectively, the outer end faces of the two flow distribution discs 7 are in zero-clearance fit with the inner end faces of the left pump cover 2 and the right pump cover 4, the flow distribution holes in the flow distribution discs 7 are designed in kidney-shaped holes 7-0, and the kidney-shaped holes 7-0 can be communicated with a left oil outlet 2-0 of the left pump cover 2 and a right oil outlet 4-0 of the right pump cover 4 respectively to realize oil outlet; and a sealing ring is adopted for sealing between the valve plate 7 and the pump body 3.
The utility model has the advantages that: a balanced type novel single screw pump for intermittently pressing oil adopts a T-shaped flow channel design, a working medium is pumped in from a middle oil inlet 3, and the working medium is pumped out to two transverse ends through single screws at the left end and the right end; the flow distribution discs 7 respectively arranged at the shaft rings of the left screw 1 and the right screw 6 at the left end and the right end rotate along with the screws, and the left oil outlet 2-0 of the left pump cover 2 is communicated with the right oil outlet 4-0 of the right pump cover 4 to seal so as to pump out and block working media in the pump, control over the flow and pressure of the working media in the pump is realized, and the efficiency of the pump is improved; the left screw rod 1 and the right screw rod 6 adopt reverse thread design, axial force balance can be realized when a working medium is pumped, the screw rod is prevented from floating in the pump body, and the pump has the advantages of compact structure, simplicity in operation, economy, practicality and the like, and has higher practical value.
Drawings
Fig. 1 is a front view of a balanced novel single-screw pump for intermittent pressure oil.
Fig. 2 is a sectional view of a balanced novel single-screw pump for intermittently pressing oil.
Fig. 3 is a left side view of a balanced novel single-screw pump for intermittent pressure oil.
Fig. 4 is a sectional view B-B of fig. 2.
Fig. 5 is a cross-sectional view C-C of fig. 2.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
referring to fig. 1, 2, 3, 4 and 5, the balanced novel single-screw pump for intermittently pressing oil comprises a left screw 1, a left pump cover 2, a pump body 3, a right pump cover 4, a coupler 5, a right screw 6, a thrust plate 7, an oil inlet 3-0, a left oil outlet 2-0, a right oil outlet 4-0 and a kidney-shaped hole 7-0; an oil inlet 3-0 is arranged at the position of the middle part of the pump body 3, which is vertical to the axis of the inner cavity, so that the pumping of working medium is realized;
the left pump cover 2 and the right pump cover 4 are fixedly connected to the left side end face and the right side end face of the pump body 3 through bolts respectively and are in sealing connection treatment, adjusting gaskets are mounted at the joints of the left pump cover 2 and the right pump cover 4 and the left side end face and the right side end face of the pump body 3 respectively, a left oil outlet 2-0 is arranged on the left pump cover 2, a right oil outlet 4-0 is arranged on the right pump cover 4 at the same position, and the left oil outlet 2-0 and the right oil outlet 4-0 are designed to have the same diameter;
the left screw 1 is coaxially and fixedly connected with the right screw 6 through a coupler 5, the left screw 1, the right screw 6 and the coupler 5 are coaxially arranged in an inner cavity of the pump body 3, the valve plate 7 is coaxially fixed at a shaft collar of the left screw 1, the valve plate 7 is axially fixed by a sleeve, and a sealing ring is arranged between the shaft collar of the left screw 1 and the valve plate 7 for sealing; the left screw rod 1 is coaxially connected with the left pump cover 2 through a bearing, and a sealing ring is adopted between the shaft body of the left screw rod 1 and the left pump cover 2 for sealing; the shaft head end of the left screw rod 1 is a power input end;
the same port plate 7 is fixedly arranged at the shaft collar of the right screw 6, the port plate 7 is axially fixed by a sleeve, and a sealing ring is arranged between the shaft collar of the right screw 6 and the port plate 7 for sealing; the right screw 6 is coaxially connected with the right pump cover 4 through a bearing, and a shaft head of the right screw 6 is sealed with the right pump cover 4 by a sealing ring;
the flow distribution discs 7 are designed in two same shapes and are coaxially and fixedly installed at the shaft rings of the left screw rod 1 and the right screw rod 6 respectively, the outer end faces of the two flow distribution discs 7 are in zero-clearance fit with the inner end faces of the left pump cover 2 and the right pump cover 4, the flow distribution holes in the flow distribution discs 7 are designed in kidney-shaped holes 7-0, and the kidney-shaped holes 7-0 can be communicated with a left oil outlet 2-0 of the left pump cover 2 and a right oil outlet 4-0 of the right pump cover 4 respectively to realize oil outlet; and a sealing ring is adopted for sealing between the valve plate 7 and the pump body 3.
The working process of the utility model is as follows:
when a balanced type novel single-screw pump with intermittent pressure oil starts to work, a working medium enters an inner cavity of a pump body from an oil inlet 3-0 of the pump body 3, is distributed to the left end and the right end in a T-shaped flow channel of the inner cavity of the pump body, and drives a right screw 6 to rotate coaxially at the same rotating speed through a coupler 5 along with the transmission of power from a shaft head of the left screw 1, the right screw 6 and the pump body 3 form a closed inner cavity, so that the working medium in the left flow channel and the right flow channel of the inner cavity of the pump; the shaft collars of the left screw 1 and the right screw 6 are respectively and fixedly provided with a port plate 7, the outer end surfaces of the two port plates 7 are respectively in gapless fit with the inner end surfaces of the left pump cover 2 and the right pump cover 4, a film formed by a small amount of working medium exists between the port plates 7 and the pump covers to achieve the lubricating effect, the port plates 7 adopt a waist-shaped hole 7-0 design, the port plates 7 can rotate along with the rotation of the left screw 1 and the right screw 6, when the waist-shaped hole 7-0 is separated from a left oil outlet 2-0 of the left pump cover 2 and a right oil outlet 4-0 of the right pump cover 4, the working medium is continuously pressurized in the pump body along with the rotation of the screws, and when the port plates 7 rotate along with the screws until the waist-shaped hole 7-0 is communicated with a left oil outlet 2-0 of the left pump cover 2 and a right oil outlet 4-0 of the right pump cover 4, the pressurized high-pressure working medium is continuously pressurized in the high-pressure pump body through the left oil Therefore, the purpose of indirect oil supply is achieved; the working pressure can be increased by changing the rotation speed of the screw.
Claims (4)
1. The utility model provides a novel single screw pump of balanced type of intermittent type nature pressure oil which characterized in that: the pump comprises a left screw (1), a left pump cover (2), a pump body (3), a right pump cover (4), a coupler (5), a right screw (6), a port plate (7), an oil inlet (3-0), a left oil outlet (2-0), a right oil outlet (4-0) and a kidney-shaped hole (7-0); an oil inlet (3-0) is designed at the position of the middle part of the pump body (3) vertical to the axis of the inner cavity to realize the pumping of working medium;
left pump cover (2) and right pump cover (4) respectively through bolt fixed connection at the left and right sides terminal surface of the pump body (3) and take sealing connection, left pump cover (2) and right pump cover (4) install adjusting shim with the pump body (3) left and right sides terminal surface junction respectively, left pump cover is gone up (2) and is arranged a left oil-out (2-0), right oil-out (4-0) have been arranged at the same position on right pump cover (4), left oil-out (2-0) and right oil-out (4-0) adopt the same diameter design.
2. The balanced type novel single-screw pump for intermittent pressure oil as claimed in claim 1, characterized in that: the left screw (1) is coaxially and fixedly connected with the right screw (6) through a coupler (5), the left screw (1), the right screw (6) and the coupler (5) are coaxially installed in an inner cavity of the pump body (3), the valve plate (7) is coaxially fixed at a shaft collar of the left screw (1), the valve plate (7) is axially fixed through a sleeve, and meanwhile a sealing ring is arranged between the shaft collar of the left screw (1) and the valve plate (7) for sealing; the left screw rod (1) is coaxially connected with the left pump cover (2) through a bearing, and a sealing ring is adopted between the shaft body of the left screw rod (1) and the left pump cover (2) for sealing; the shaft head end of the left screw (1) is a power input end.
3. The balanced type novel single-screw pump for intermittent pressure oil as claimed in claim 1, characterized in that: the same valve plate (7) is fixedly arranged at the shaft ring of the right screw (6), the valve plate (7) is axially fixed by a sleeve, and a sealing ring is arranged between the shaft ring of the right screw (6) and the valve plate (7) for sealing; the right screw rod (6) is coaxially connected with the right pump cover (4) through a bearing, and a shaft head of the right screw rod (6) is sealed with the right pump cover (4) through a sealing ring.
4. The balanced type novel single-screw pump for intermittent pressure oil as claimed in claim 1, characterized in that: the flow distribution discs (7) are designed in two same shapes and are coaxially and fixedly mounted at the shaft collars of the left screw (1) and the right screw (6) respectively, the outer end faces of the two flow distribution discs (7) are in zero-clearance fit with the inner end faces of the left pump cover (2) and the right pump cover (4), the flow distribution holes in the flow distribution discs (7) are designed in kidney-shaped holes (7-0), and the kidney-shaped holes (7-0) can be communicated with a left oil outlet (2-0) of the left pump cover (2) and a right oil outlet (4-0) in the right pump cover (4) respectively to realize oil outlet; the valve plate (7) and the pump body (3) are sealed by a sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021567753.8U CN213235428U (en) | 2020-08-01 | 2020-08-01 | Balanced type novel single-screw pump capable of intermittently pressing oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021567753.8U CN213235428U (en) | 2020-08-01 | 2020-08-01 | Balanced type novel single-screw pump capable of intermittently pressing oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213235428U true CN213235428U (en) | 2021-05-18 |
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ID=75891741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021567753.8U Active CN213235428U (en) | 2020-08-01 | 2020-08-01 | Balanced type novel single-screw pump capable of intermittently pressing oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213235428U (en) |
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2020
- 2020-08-01 CN CN202021567753.8U patent/CN213235428U/en active Active
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