WO2021042664A1

WO2021042664A1 - Uniform flow pipeline pump

Info

Publication number: WO2021042664A1
Application number: PCT/CN2020/072761
Authority: WO
Inventors: 肖立峰
Original assignee: 肖立峰
Priority date: 2019-09-06
Filing date: 2020-02-27
Publication date: 2021-03-11
Also published as: CN110425121A; CN110425121B

Abstract

A uniform flow pipeline pump (100), comprising a pump housing (10) that is formed by the aligned connection between an upper pump housing (11) and a lower pump housing (12); pipeline accommodating cavities (10B) are formed by aligning an upper pipeline accommodating cavity (111) and a lower pipeline accommodating cavity (121), and two elastic hoses (30) are provided within each pipeline accommodating cavity (10B); a spindle (40) is provided within the pump housing (10), a shaft sleeve (50) is connected on the spindle (40), and first wobble plates (61) and second wobble plates (62) are provided on the spindle (40) and the shaft sleeve (50) and are mounted obliquely; arc-shaped projections (611, 621) are provided at the edges of the first and second wobble plates, and the arc-shaped projections (611, 621) contact inner sides of two elastic hoses (30), respectively; and the first wobble plates (61) and the second wobble plates (62) are each supported by a first bearing (71) and a second bearing (72), respectively. When the spindle (40) rotates, the first wobble plates (61) and the second wobble plates (62) are driven to swing in the circumferential direction so as to squeeze or release the elastic hoses (30) during swinging so that a liquid is continuously drained and suctioned. The described uniform flow pipeline pump (100) may effectively reduce the wear on the elastic hoses (30); moreover, the flow rate of a fluid is more uniform, and the fluid is conveyed more stably.

Description

Uniform flow pipeline pump

【Technical Field】

The invention relates to a liquid pump, in particular to a uniform flow pipeline pump which can effectively reduce the abrasion of an elastic hose, has a more uniform fluid flow rate, and a more stable delivery.

【Background technique】

A pump is a machine that transports liquids or pressurizes liquids. It transfers the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. Pumps are widely used to transport liquids such as water, oil, acid and alkali, emulsions, suspoemulsions and liquid metals, as well as liquids, gas mixtures and liquids containing suspended solids. Traditional pumps include centrifugal pumps, diaphragm pumps, piston pumps, and peristaltic pumps. In the chemical, food, pharmaceutical, biological engineering and other fields, there are high requirements for flow pulsation and flow accuracy. Among the existing pipeline pumps, there is a pipeline pump that pushes a single balance wheel to swing in the circumferential direction through an oblique cam mounted on the central axis to press the infusion hose to discharge and inhale liquid. Although it can realize liquid transportation, it has obvious defects. . Because the intersection of the axis of the balance wheel and the axis of the central shaft moves during the rotation and swing of the balance wheel, the balance wheel not only exerts pressure on the hose, but also has a large friction force, which makes the infusion hose serious. Therefore, the service life is greatly reduced, and frequent replacement of the hose not only increases the cost, but also leads to a decrease in production efficiency.

[Summary of the invention]

The present invention aims to solve the above-mentioned problems, and provides a uniform flow pipeline pump which can effectively reduce the abrasion of the elastic hose, the fluid flow rate is more uniform, the delivery is more stable, the cost can be reduced, and the production efficiency can be improved.

In order to achieve the above objective, the present invention provides a uniform flow pipeline pump. The uniform flow pipeline pump includes a pump housing with a cylindrical cavity in the pump housing, and an annular pipe is provided on the side wall of the cylindrical cavity. The accommodating cavity is provided with a pipe inlet and outlet communicating with the pipe accommodating cavity on the pump housing, and a pipe joint fixed to the pump housing is provided outside the pipe inlet and outlet, and two elastic hoses are arranged in the pipe accommodating cavity , The two ends of the elastic hose are connected with the pipe joints, and the inner cavity of the pump housing is provided with a main shaft coaxial with the inner cavity, and the main shaft is connected with the motor. The pump casing and the lower pump casing are butted and connected, and the upper and lower pump casings are respectively provided with an upper pipe accommodating groove and a lower pipe accommodating groove, and an upper pipe accommodating groove and a lower pipe accommodating groove on opposite sides of the upper pump housing and the lower pump housing. A plurality of protrusions are provided at the bottom of the tube at equal intervals along the circumferential direction, and the upper pipe accommodating groove and the lower pipe accommodating groove are aligned to form a pipe accommodating cavity, and a shaft sleeve is connected to the main shaft, the main shaft and the shaft sleeve A first wobble plate and a second wobble plate are arranged on the upper part. The part of the main shaft and the sleeve connecting the first wobble plate and the second wobble plate is inclined, so that the first wobble plate and the second wobble plate are installed obliquely. The edges of the wobble plate and the second wobble plate are provided with arc-shaped protrusions. The arc-shaped protrusions of the two wobble plates are respectively in contact with the inner sides of the two elastic hoses. The first wobble plate and the second wobble plate are supported by the first bearing. , The second bearing support, the opposite sides of the two wobble plates are provided with a plurality of bowl-shaped depressions spaced in the circumferential direction, and the plurality of bowl-shaped depressions are paired to form a plurality of nearly spherical ball cavities, and each is installed in the plurality of nearly spherical ball cavities. There is a rotatable ball, so that when the main shaft rotates, the first wobble plate and the second wobble plate are driven to swing in the circumferential direction, and the elastic hose is squeezed or loosened during the swing, so that the liquid is continuously discharged And inhalation.

The central axis of the pipe containing cavity coincides with the central axis of the main shaft.

The main shaft includes an upper straight shaft at both ends, a lower straight shaft, and an oblique shaft between the upper straight shaft and the lower straight shaft. The upper end of the oblique shaft is provided with a first shoulder, and the axis of the oblique shaft is the same as the axis of the straight shaft. At a point, the center of the upper straight shaft is provided with a motor shaft hole, the side surface of the lower straight shaft is provided with a key groove, and the center is provided with a first screw hole.

The shaft sleeve includes an inclined shaft sleeve at the upper part and a straight shaft sleeve at the lower part. A second shoulder is arranged at the lower part of the inclined shaft sleeve, a key groove is provided on the inner wall of the shaft hole of the inclined shaft sleeve, and the straight shaft sleeve is provided on the inner wall of the shaft hole. There is a connecting hole, and the axis of the outer cylindrical surface of the inclined shaft sleeve intersects the axis of the straight axis of the main shaft at a point.

The oblique shaft sleeve of the shaft sleeve is sleeved on the lower straight shaft of the main shaft. The shape and inclination angle of the oblique shaft sleeve are the same as the oblique shaft of the main shaft. The keys are fixed, and the main shaft and the sleeve are supported by the third bearing and the fourth bearing respectively.

The first wobble plate and the second wobble plate are disc-shaped bodies with a first bearing hole and a through hole for the main shaft to pass through in the center. The first wobble plate is fixed on the main shaft through the first bearing, and the second wobble plate passes through the first bearing hole. The two bearings are fixed on the sleeve, and the first wobble plate and the second wobble plate are mutually supported by a plurality of balls located between them. The axis of the first wobble plate and the second wobble plate intersects the axis of the straight shaft of the main shaft. At one point, the first wobble plate is supported by a first bearing located below the first shoulder of the main shaft, and the second wobble plate is supported by a second bearing located above the second shoulder of the sleeve.

The intersection of the axis of the oblique shaft and the axis of the straight shaft is located on the plane of the top of the arc-shaped protrusion of the first wobble plate, and the intersection of the axis of the outer cylindrical surface of the oblique shaft sleeve and the axis of the straight shaft is located on the arc of the second wobble plate The plane where the top of the protrusion lies.

The pipe joint includes a liquid inlet, a liquid outlet, four pipe connections and a pressure plate. The liquid inlet and the liquid outlet are respectively connected to two water inlet pipe connections and two water outlet pipe connections, and two water inlet pipe connections And the two outlet pipe interfaces are tapered outside, and the four ports of the two elastic hoses are inserted into the two inlet pipe interfaces and the two outlet pipe interfaces, and are sealed and fixed by a pressure plate.

Four fixing holes corresponding to the four tube interfaces of the two elastic hoses are provided on the inner side of the pressure plate. The four ends of the two elastic hoses are inserted into the fixing holes, and each fixing hole includes a straight hole. And the cone hole part, the cone hole part extends from the middle part of the fixing hole to the entrance, so that the end of the elastic hose is fixed on the pressure plate.

The contribution of the present invention is that it effectively solves the problems existing in the prior art. The uniform flow pipeline pump of the present invention adopts the double wobble plate structure arranged on the inclined shaft, so that the intersection of the axis of the inclined shaft and the axis of the straight shaft is located on the plane of the top of the arc-shaped protrusion of the first wobble plate, and the outer side of the inclined shaft sleeve The intersection of the axis of the cylindrical surface and the axis of the straight shaft is located on the plane where the top of the arc-shaped protrusion of the second wobble plate is located. Since the intersection point falls on the axis, when the main shaft rotates, the first wobble plate and the second pendulum When the disc swings, the elastic hose is only oscillated and rolled, and the degree of friction is greatly reduced. Therefore, the service life of the elastic hose can be greatly improved, which not only saves production costs, but also greatly reduces the time to replace the elastic hose. Effectively improve production efficiency. The invention also has the characteristics of simple structure, easy implementation, wide application range and the like.

【Explanation of the drawings】

Fig. 1 is a schematic diagram of the appearance of the present invention.

Fig. 2 is a cross-sectional view of the structure of the present invention.

Fig. 3 is a cross-sectional view of another structure of the present invention.

Fig. 4 is a schematic diagram of the pump casing structure of the present invention, in which Fig. 4A is a cross-sectional view of the upper pump casing structure, Fig. 4B is a top view of Fig. 4A, Fig. 4C is a cross-sectional view of the lower pump casing, and Fig. 4D is a bottom view of Fig. 4C.

Figure 5 is a cross-sectional view of the spindle structure of the present invention.

Fig. 6 is a cross-sectional view of the sleeve structure of the present invention.

FIG. 7 is a schematic diagram of the structure of the first wobble plate of the present invention, in which 7A is a cross-sectional view, and FIG. 7B is a bottom view of FIG. 7A.

8 is a schematic diagram of the structure of the pipe joint of the present invention, in which FIG. 8A is a schematic diagram of the appearance, FIG. 8B is a cross-sectional view of the structure, FIG. 8C is a diagram of the pressure plate, and FIG. 8D is a cross-sectional view of FIG. 8C.

【detailed description】

The following examples are further explanations and descriptions of the present invention, and do not constitute any limitation to the present invention.

1 to 3, the uniform flow pipeline pump 100 of the present invention includes a pump housing 10, a pipe joint 20, an elastic hose 30, a main shaft 40, a shaft sleeve 50, a first wobble plate 61, a second wobble plate 62, and a first wobble plate. Bearing 71, second bearing 72, third bearing 73, and third bearing 74.

As shown in FIG. 4, the pump casing 10 is formed by buttingly connecting an upper pump casing 11 and a lower pump casing 12. The structure of the upper pump casing 11 is shown in FIGS. 4A and 4B, which is a convex block body. , The center is provided with a cylindrical inner cavity 10A1 composed of three sections of holes with different diameters. The cylindrical inner cavity 10A1 is used to house the motor shaft (not shown in the figure), the main shaft 40, the first bearing 71 and the third Bearing 73. The structure of the lower pump housing 12 is shown in Figure 4C and Figure 4D. It is an inverted convex block with a cylindrical cavity 10A2 composed of two sections of holes with different diameters in the center. The cylindrical cavity 10A2 is used for The shaft sleeve 50, the second bearing 72 and the fourth bearing 74 are accommodated. The cylindrical inner cavity 10A1 of the upper pump casing 11 and the cylindrical inner cavity 10A2 of the lower pump casing 12 are aligned to form a cylindrical inner cavity 10A. Opposite sides of the upper pump casing 11 and the lower pump casing 12 are respectively provided with a U-shaped upper pipe accommodating groove 111 and a lower pipe accommodating groove 121, and the upper pipe accommodating groove 111 and the lower pipe accommodating groove 121 are formed by a pairing The nearly elliptical pipe accommodating cavity 10B is used for accommodating the elastic hose 30, and the central axis of the pipe accommodating cavity 10B coincides with the central axis of the main shaft 40. As shown in Figures 4B and 4D, a plurality of

protrusions

1111, 1211 are provided at the bottom of the upper pipe accommodating groove 111 and the lower pipe accommodating groove 121 at equal intervals along the circumferential direction. In this embodiment, the convex The

ridges

1111 and 1211 are wave-shaped, which are used to form the pressure dead point of the first wobble plate 61 and the second wobble plate 62 on the elastic hose 30, so as to separate the high and low pressure areas of the liquid in the hose. During the swinging process of the first wobble plate 61 and the second wobble plate 62, they sequentially contact the crushing point to drive the liquid to flow. The pump housing 10 is provided with a pipe inlet and outlet 10C communicating with the pipe containing cavity, and a pipe joint 20 fixed to the pump housing 10 is provided outside the pipe inlet and outlet 10C.

As shown in Figures 8A and 8B, the pipe joint 20 includes a liquid inlet 21, a liquid outlet 22, four pipe connections 23, and a pressure plate 24, wherein the liquid inlet 21 and the liquid outlet 22 are respectively provided at The upper and lower ends of the pipe joint are provided with two water inlet pipe interfaces 231 and two water outlet pipe interfaces 232 between the liquid inlet 21 and the liquid outlet 22. The liquid inlet 21 and the liquid outlet 22 are connected to the two inlets respectively. The water pipe interface 231 and the two outlet pipe interfaces 232 are connected. The outside of the two inlet pipe interfaces 231 and the two outlet pipe interfaces 232 are tapered inwardly, and the four ports of the two elastic hoses 30 are inserted into the two inlet pipe interfaces 231 and the two outlet pipe interfaces 232, and The pressure plate 24 is sealed and fixed. As shown in Figures 8C and 8D, four fixing holes 241 corresponding to the four tube ports 23 of the two elastic hoses are provided on the inner side of the pressure plate 24, and each fixing hole 241 includes a straight hole 2411 and an inward The inclined taper hole portion 2412, whose taper hole portion 2412 extends from the middle of the fixing hole 241 to the entrance, the four ends of two elastic hoses are inserted into the fixing holes 241, and the ends of the elastic hose 30 are pushed through the pressure plate 24.部fixed. The processed liquid enters the elastic hose 30 through the liquid inlet 21 and the water inlet pipe interface 231, and then is discharged through the water outlet pipe interface 232 and the liquid outlet 22.

As shown in Figures 2 and 3, an elastic hose 30 is provided in each of the upper pipe accommodating groove 111 and the lower pipe accommodating groove 121. The elastic hose 30 is a high-strength elastic hose, such as rubber. A hose, a plastic hose or a silicone hose, both ends of the hose 30 are connected to the pipe joint 20.

As shown in Figures 2, 3, and 5, a main shaft 40 is provided in the inner cavity 10A of the pump housing. The main shaft 40 is connected to a motor (not shown in the figure), and the main shaft 40 is coaxial with the inner cavity 10A. . The main shaft 40 includes an upper straight shaft 41, a lower straight shaft 42 and an oblique shaft 43 at both ends. The oblique shaft 43 is located between the upper straight shaft 41 and the lower straight shaft 42. The oblique shaft 43 is used to make the first wobble plate 61 The inclined shaft 43 is installed and oscillated at an angle, and the upper end of the inclined shaft 43 is provided with a first shoulder 44 for defining the first bearing 71. The axis of the inclined shaft 43 intersects the axis of the straight shaft at a point, the center of the upper straight shaft 41 is provided with a motor shaft hole 411, and the motor shaft is fixed in the motor shaft hole 411. The side surface of the lower straight shaft 42 is provided with a key groove 421 for connecting with the shaft sleeve 50. The center of the lower straight shaft is provided with a first screw hole 422 for fixing the shaft sleeve 50.

As shown in Figures 2, 3, and 6, the shaft sleeve 50 includes an inclined shaft sleeve 51 at the upper part and a straight shaft sleeve 52 at the lower part. The oblique shaft sleeve 51 is arranged obliquely with respect to the straight shaft sleeve 52. A second shoulder 53 is provided at the lower part of the inclined shaft sleeve 51 to define the second bearing 72. A key groove 511 is provided on the inner wall of the shaft hole of the inclined shaft sleeve 51, which is matched with the key groove 421 of the lower straight shaft of the main shaft, so that the main shaft 40 and the shaft sleeve 50 are positioned. The straight shaft sleeve 52 is provided with a connecting hole 521 for connecting the main shaft 40 and the shaft sleeve 50. The axis of the outer cylindrical surface of the inclined shaft sleeve 51 intersects the axes of the upper straight shaft 41 and the lower straight shaft 42 of the main shaft at one point. As shown in Fig. 2, the inclined shaft sleeve 51 of the shaft sleeve is sleeved on the lower straight shaft 42 of the main shaft, and is limited by the key installed in the key groove 511 of the inclined shaft sleeve and the key groove 421 of the straight shaft of the main shaft. The shape and inclination angle of the inclined shaft sleeve 51 are the same as the inclined shaft 43 of the main shaft. The main shaft 40 and the shaft sleeve 50 are restricted and connected by the first screw hole 422, the connecting hole 521 and the key installed in the

key groove

421, 511. The main shaft 40 and the sleeve 50 are supported by a third bearing 73 and a fourth bearing 74, respectively.

As shown in Figures 2, 7A, and 7B, a first wobble plate 61 and a second wobble plate 62 are provided on the main shaft 40 and the sleeve 50, wherein the first wobble plate 61 is installed obliquely through the first bearing 71 On the inclined shaft 43 of the main shaft, the inclination angle of the first bearing 71 defines the inclination angle of the first wobble plate 61. The edge of the first wobble plate 61 is provided with an arc-shaped protrusion 611 that contacts the surface of the elastic hose 30 and squeezes the elastic hose 30 when the first wobble plate 61 swings. The first wobble plate 61 is supported by the first bearing 71. The second wobble plate 62 has the same structure as the first wobble plate 61, and is arranged in the lower part of the first wobble plate 61 in the opposite direction. The edge of the second wobble plate 62 is provided with an arc-shaped protrusion 621 which is connected to the surface of the elastic hose 30. Contact and squeeze the elastic hose 30 when the second wobble plate 62 swings. The second wobble plate 62 is supported by a second bearing 72. A plurality of bowl-shaped

recesses

612, 622 are provided on opposite sides of the first wobble plate 61 and the second wobble plate 62 at intervals along the circumferential direction, and the bottom of the plurality of bowl-shaped

recesses

612, 622 has a flat surface. The bowl-shaped

depressions

612, 622 on the opposite sides of the two wobble plates form a plurality of nearly spherical ball cavities 60A. Each of the nearly spherical ball cavities 60A is equipped with a ball 63 whose diameter is smaller than that of the ball cavity 60A. The size of the ball 63 can rotate within a certain range in the ball cavity 60A. As shown in Fig. 7A and Fig. 7B, the first wobble plate 61 and the second wobble plate 62 are disc-shaped bodies with first bearing holes 613, 623 and through

holes

614, 624 for the main shaft to pass through in the center. The wobble plate 61 is fixed on the main shaft 40 through the first bearing 71, the second wobble plate 62 is fixed on the sleeve 50 through the second bearing 72, and the first wobble plate 61 and the second wobble plate 62 pass through the shaft between them. The two balls 63 support each other. The axes of the first wobble plate 61 and the second wobble plate 62 intersect with the axis of the straight shaft of the main shaft, respectively. Specifically, as shown in FIG. 2, the intersection of the axis of the inclined shaft 43 and the axis of the straight shaft is located on the plane where the top of the arc-shaped protrusion 611 of the first wobble plate 61 is located, and the axis of the outer cylindrical surface of the inclined shaft sleeve 51 and The intersection of the axis of the straight shaft is located on the plane of the top of the arc-shaped protrusion 621 of the second wobble plate. Because the position of the intersection point does not change during the rotation of the main shaft, the first wobble plate 61 and the second wobble plate 62 swing under the drive of the main shaft 40. The contact surface of the wobble plate and the elastic hose does not slide relative to each other, but only swings and rolls, thus greatly reducing the friction damage of the elastic hose, significantly prolonging the service life of the elastic hose, and improving the working efficiency of the pump .

The working process of the present invention is shown in Figure 2 and Figure 3. When the motor drives the main shaft 40 to rotate, the main shaft 40 and the sleeve 50 drive the first wobble plate 61 and the second wobble plate 62 to swing. A wobble plate 61 and a second wobble plate 62 are arranged obliquely, so that the arc-shaped

protrusions

611, 621 of the first wobble plate 61 and the second wobble plate 62 squeeze or loosen the two elastic hoses 30 during the swing process. During the squeezing process, when the elastic hose 30 is completely compressed at the position corresponding to the wave-shaped

protrusions

1111, 1211 at the bottom of the upper pipe containing groove 111 and the lower pipe containing groove 121, the liquid It can’t pass, so the backflow of the liquid is prevented. The first wobble plate 61 and the second wobble plate 62 are continuously squeezed, so that the liquid entering the hose 30 is continuously discharged and sucked, forming the uniform flow pipeline pump of the present invention Work. Also due to the double wobble plate and double pipe structure of the present invention, the phase difference of the two elastic hoses 30 is 180 degrees, the liquid flows in parallel at the outlet, and the flow is uniform after the parallel flow, thus forming the uniform flow pipeline pump of the present invention.

Although the present invention has been disclosed through the above embodiments, the scope of protection of the present invention is not limited thereto. Without departing from the concept of the present invention, the deformations, replacements, etc. of the above components will fall into the present invention. Within the scope of the claims.

Claims

A uniform flow pipeline pump. The uniform flow pipeline pump (100) comprises a pump housing (10), and a cylindrical inner cavity (10A) is arranged in the pump housing (10). The side wall of the cylindrical inner cavity (10A) A ring-shaped pipe containing cavity (10B) is provided on the pump housing (10), a pipe inlet (10C) communicating with the pipe containing cavity is provided on the pump housing (10), and the pipe inlet (10C) is externally provided with the pump housing (10) A fixed pipe joint (20), two elastic hoses (30) are arranged in the pipe containing cavity (10B), two ends of the elastic hose (30) are connected to the pipe joint (20) In the inner cavity (10A) of the pump casing, there is a main shaft (40) coaxial with the inner cavity, and the main shaft (40) is connected with the motor. It is characterized in that the pump casing (10) consists of the upper pump The casing (11) and the lower pump casing (12) are butted and connected. The upper pump casing (11) and the lower pump casing (12) are respectively provided with an upper pipe containing groove (111) and a lower pipe containing groove. A plurality of protrusions (1111, 1211) are provided at the bottom of the upper pipe holding groove (111) and the lower pipe holding groove (121) at equal intervals along the circumferential direction. The upper pipe holding groove (111) ) And the lower pipe accommodating groove (121) to form a pipe accommodating cavity (10B), a shaft sleeve (50) is connected to the main shaft (40), and a shaft sleeve (50) is connected to the main shaft (40) and the shaft sleeve (50). A first wobble plate (61) and a second wobble plate (62) are provided, and the parts of the main shaft (40) and the shaft sleeve (50) that connect the first wobble plate (61) and the second wobble plate (62) are inclined , So that the first wobble plate (61) and the second wobble plate (62) are installed obliquely, the edges of the first wobble plate (61) and the second wobble plate (62) are provided with arc-shaped protrusions (611, 621), two The arc-shaped protrusions (611, 621) of the two wobble plates are in contact with the inner sides of the two elastic hoses (30) respectively. The first wobble plate (61) and the second wobble plate (62) are connected by the first bearing (71). ), the second bearing (72) is supported, the opposite sides of the two wobble plates are provided with a plurality of bowl-shaped recesses (612, 622) spaced in the circumferential direction, and the plurality of bowl-shaped recesses (612, 622) are paired to form a plurality of proximal The spherical ball cavity (60A) is equipped with a rotatable ball (63) in a plurality of nearly spherical ball cavities (60A), so that when the main shaft (40) rotates, the first wobble plate (61) and The second wobble plate (62) swings in the circumferential direction, and the elastic hose (30) is squeezed or loosened during the swing process, so that the liquid is continuously discharged and sucked in.
The uniform flow pipeline pump according to claim 1, wherein the central axis of the pipeline containing cavity (10B) coincides with the central axis of the main shaft (40).
The uniform flow pipeline pump according to claim 1, wherein the main shaft (40) includes an upper straight shaft (41), a lower straight shaft (42) at both ends, and an upper straight shaft (41) and a lower straight shaft. The oblique shaft (43) between the shafts (42), the upper end of the oblique shaft (43) is provided with a first shoulder (44), the axis of the oblique shaft (43) and the axis of the straight shaft intersect at a point, so The center of the upper straight shaft (41) is provided with a motor shaft hole (411), the side surface of the lower straight shaft (42) is provided with a key groove (421), and the center is provided with a first screw hole (422).
The uniform flow pipeline pump according to claim 3, wherein the shaft sleeve (50) comprises an inclined shaft sleeve (51) located at the upper part and a straight shaft sleeve (52) located at the lower part, and the shaft sleeve (51) The lower part is provided with a second shoulder (53), the inner wall of the shaft hole of the inclined shaft sleeve (51) is provided with a key groove (511), and the straight shaft sleeve (52) is provided with a connecting hole (521). The axis of the outer cylindrical surface of the inclined shaft sleeve (51) intersects the axis of the straight axis of the main shaft at a point.
The uniform flow pipeline pump according to claim 4, wherein the inclined shaft sleeve (51) of the shaft sleeve is sleeved on the lower straight shaft (42) of the main shaft, and the shape of the inclined shaft sleeve (51) And the inclination angle is the same as the inclined shaft (43) of the main shaft. The main shaft (40) and the sleeve (50) pass through the first screw hole (422), the connecting hole (521) and the key phase installed in the keyway (421, 511). Fixed, the main shaft (40) and the shaft sleeve (50) are respectively supported by a third bearing (73) and a fourth bearing (74).
The uniform flow pipeline pump according to claim 5, wherein the first wobble plate (61) and the second wobble plate (62) are disc-shaped bodies with a first bearing hole (613, 623) in the center. ) And through holes (614, 624) for the main shaft to pass through. The first wobble plate (61) is fixed on the main shaft (40) through a first bearing (71), and the second wobble plate (62) passes through a second bearing (72). ) Is fixed on the shaft sleeve (50), and the first wobble plate (61) and the second wobble plate (62) are mutually supported by a plurality of balls (63) located between them, the first wobble plate (61) and the second wobble plate (61) The axis of the second wobble plate (62) intersects the axis of the straight shaft of the main shaft at one point, and the first wobble plate (61) is supported by a first bearing (71) located below the first shoulder (44) of the main shaft (40), The second wobble plate (62) is supported by a second bearing (72) located above the second shoulder (53) of the shaft sleeve (50).
The uniform flow pipeline pump according to claim 3 or 4, characterized in that the intersection of the axis of the inclined shaft (43) and the axis of the straight shaft is located on the arc-shaped protrusion (611) of the first wobble plate (61) On the plane where the top is located, the intersection of the axis of the outer cylindrical surface of the inclined shaft sleeve (51) and the axis of the straight shaft is located on the plane of the top of the arc-shaped protrusion (621) of the second wobble plate.
The uniform flow pipeline pump according to claim 4, wherein the pipe joint (20) includes a liquid inlet (21), a liquid outlet (22), four pipe connections (23) and a pressure plate (24) , Wherein the liquid inlet (21) and the liquid outlet (22) are respectively communicated with two inlet pipe interfaces (231) and two outlet pipe interfaces (232), two inlet pipe interfaces (231) and two The two outlet pipe interfaces (232) are tapered outside, and the four ports of the two elastic hoses (30) are inserted into the two inlet pipe interfaces (231) and the two outlet pipe interfaces (232), and the pressure plate (24) ) Sealed and fixed.
The uniform flow pipeline pump according to claim 8, characterized in that, four fixing holes (241) corresponding to the four pipe interfaces (23) of the two elastic hoses are provided on the inner side of the pressure plate (24) , The four ends of the two elastic hoses are inserted into the fixing holes (241), each fixing hole (241) includes a straight hole portion (2411) and a tapered hole portion (2412), and the tapered hole portion (2412) is The middle part of the fixing hole (241) extends to the entrance, so that the end of the elastic hose (30) is fixed on the pressure plate (24).