CN220581249U - Self-cooling reciprocating pump - Google Patents

Abstract

The utility model provides a self-cooling type reciprocating pump, which comprises a power component and a main pump component, wherein the power component comprises a shell and a core body, the shell comprises a containing cavity, the core body is installed in the containing cavity and is coaxially connected with the shell, the radial cavity wall of the containing cavity is matched with the radial outermost surface of the core body to form a medium cavity, a first pipe fitting is arranged on the far pump side of the shell and is used for connecting a medium source, the medium source is used for providing cooling medium to the power component and the main pump component, the first pipe fitting is communicated with the medium cavity, the main pump component comprises a heat exchange cavity and a second pipe fitting, the heat exchange cavity is communicated with the medium cavity and the second pipe fitting, the cooling medium exchanges heat with the main pump component in the heat exchange cavity, the cooling of a pump body can be efficiently realized, and the service life of the pump body is prolonged.

Description

Self-cooling reciprocating pump

Technical Field

The utility model relates to the technical field of reciprocating pumps, in particular to a self-cooling type reciprocating pump.

Background

The reciprocating pump, also called plunger pump, is a device for realizing liquid suction and liquid pressure by means of the reciprocating motion of a plunger component in a pump body to change the volume, and is widely applied to the fields of high pressure, large flow and the like, such as a high-pressure cleaning machine and the like.

In the working process of the reciprocating pump, electromagnetic heat can be generated by the electrically driven reciprocating pump, friction is generated in the pump body due to mechanical movement of the plunger assembly, energy lost by friction can be converted into heat, the interior of the pump body is further heated continuously, even thermal deformation of different degrees can be caused, the pump body works in an environment with high temperature for a long time, the output power of the pump body can be limited, the service life of the pump body is seriously influenced, and therefore the reciprocating pump needs to be cooled.

In the prior art, air cooling is generally adopted for heat dissipation, a cooling fan is arranged at the side of the reciprocating pump, and air flow is driven by the cooling fan to cool the pump body, so that the cooling fan is required to be arranged, the occupied space is increased, the cooling effect is poor, and certain limitation is achieved.

Disclosure of Invention

Accordingly, the present utility model is directed to a self-cooling reciprocating pump that can efficiently exchange heat and cool a pump body and extend the service life of the pump body.

The utility model provides a self-cooling type reciprocating pump, which comprises a power component and a main pump component, wherein the power component is coaxially connected with the main pump component, the power component comprises a shell and a core body, the shell comprises a containing cavity, the core body is installed in the containing cavity and is coaxially connected with the shell, a radial cavity wall of the containing cavity is matched with the radial outermost surface of the core body to form a medium cavity, a first pipe fitting is arranged on the far pump side of the shell and is used for connecting a medium source, the medium source is used for providing cooling medium to the power component and the main pump component, the first pipe fitting is communicated with the medium cavity, the heat exchange cavity comprises a heat exchange cavity and a second pipe fitting, the heat exchange cavity is communicated with the medium cavity and the second pipe fitting, and the cooling medium exchanges heat with the main pump component in the heat exchange cavity.

In an embodiment, the power component comprises a pressure regulating member, the pressure regulating member is arranged in the accommodating cavity, the pressure regulating member is located between the cavity wall of the far pump side of the accommodating cavity and the core body, the pressure regulating member is coaxially arranged with the shell body and the core body, the pressure regulating member can rotate around the axial direction, the far pump side of the pressure regulating member is convexly provided with blades, an adjusting cavity is formed between the pressure regulating member and the cavity wall of the far pump side of the accommodating cavity, and the adjusting cavity is communicated with the first pipe fitting and the medium cavity.

In an embodiment, the radially outermost surface of the core body is provided with a flow guiding sheet in a protruding manner, and/or the radially inner wall of the accommodating cavity is provided with the flow guiding sheet in a protruding manner, the flow guiding sheet is accommodated in the medium cavity, and the flow guiding sheet is used for increasing the contact area between the cooling medium in the medium cavity and the core body.

In an embodiment, the main pump assembly comprises a connecting pipe, the connecting pipe is communicated with the heat exchange cavity, an interface is arranged on the side, close to the pump, of the core body, the interface is communicated with the medium cavity, and the interface is connected with the connecting pipe so as to realize the communication between the medium cavity and the heat exchange cavity.

In an embodiment, the main pump assembly includes the main pump chamber, and set up in center pin, sloping cam plate and the plunger subassembly in the main pump chamber, the one end of center pin with the sloping cam plate is connected, and the other end passes the inside with the pressure regulating piece of core is connected, the center pin with the coaxial setting of core, just the center pin is rotatory motion around the axial, drives the sloping cam plate with the pressure regulating piece is rotatory around the axial, the sloping cam plate keep away from the one end of center pin with the plunger subassembly contacts, the sloping cam plate is rotatory around the axial, drives the reciprocating motion is along the axial to the plunger subassembly.

In an embodiment, the core body comprises a functional cavity, a rotor and a stator are arranged in the functional cavity, and the rotor is sleeved on the central shaft and can rotate around the axial direction along with the central shaft.

In an embodiment, the distal pump side of the core is provided with a seal shell, the radially outermost contour dimension of the seal shell is greater than the radially outermost contour dimension of the core, and the radially outermost contour dimension of the seal shell is greater than the radially outermost contour dimension of the receiving cavity, and when the housing is connected with the core, the seal shell is in contact with and connected with the proximal pump side of the housing.

In an embodiment, at least one connecting piece is protruding along radial outermost surface of the pump-proximal side of the housing, a first connecting hole is provided on the connecting piece, a second connecting hole is provided on the sealing housing, the second connecting hole cooperates with the first connecting hole, and connection between the housing and the core is achieved through a fastener.

In an embodiment, the near pump side of the core is provided with a connecting cylinder, the connecting cylinder is connected with the core through the sealing shell, the connecting cylinder comprises a pump connecting cavity, the pump connecting cavity is communicated with the main pump cavity and the functional cavity, and one end of the central shaft near the pump side, the swash plate and the plunger assembly are arranged in an accommodating space formed by the pump connecting cavity and the main pump cavity.

In an embodiment, the main pump assembly comprises a main pump cavity, at least one heat conducting column is arranged in the main pump cavity, the heat conducting column is arranged in parallel with the plunger assembly in the main pump cavity, the heat exchanging cavity is arranged in the heat conducting column, and the heat exchanging cavity is communicated with the connecting pipe and the second pipe fitting.

In one embodiment, the media lumen has a smaller diameter dimension on the distal pump side than on the proximal pump side.

In an embodiment, the core is of a fixed diameter size, the diameter of the proximal pump side of the receiving chamber is greater than the diameter of the distal pump side thereof, or the diameter of the proximal pump side of the core is less than the diameter of the distal pump side thereof, and the receiving chamber is of a fixed diameter size.

In one embodiment, the diameter of the two ends of the medium cavity along the axial direction is larger than the diameter of the middle part of the medium cavity.

In an embodiment, the diameter dimension of the middle part of the core body is larger than the diameter dimension of the two ends of the core body along the axial direction, the accommodating cavity is of a fixed diameter dimension, or the diameter dimension of the middle part of the accommodating cavity is smaller than the diameter dimension of the two ends of the accommodating cavity along the axial direction, and the core body is of a fixed diameter dimension.

The self-cooling reciprocating pump provided by the utility model has the beneficial effects that:

the power assembly comprises a first pipe fitting, a shell and a core body form a medium cavity communicated with the first pipe fitting, the first pipe fitting is used for introducing cooling medium into the medium cavity, the core body is arranged in the shell, and the cooling medium exchanges heat with the core body in the medium cavity to cool so as to ensure the safety of the working environment of the power assembly and prolong the service life of the power assembly; the main pump assembly comprises a heat exchange cavity communicated with the medium cavity, a cooling medium enters the heat exchange cavity through the medium cavity, heat exchange is realized between the heat exchange cavity and the inside of the main pump assembly, and the cooling medium is discharged through the second pipe fitting, so that the main pump assembly can be subjected to heat exchange and cooling, the service life of the main pump assembly is prolonged, the space occupation is small, and the output power of the pump body is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an overall structure of an embodiment of the present utility model;

FIG. 2 is an exploded right side view of the overall structure of an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of the overall structure of an embodiment of the present utility model;

FIG. 4 is an enlarged partial schematic view of FIG. 3; FIG. 5 is a schematic view of a core according to an embodiment of the present utility model;

FIG. 6 is a cross-sectional view of a power assembly according to another embodiment of the present utility model;

FIG. 7 is a cross-sectional view of a power assembly according to another embodiment of the present utility model;

FIG. 8 is a partial cross-sectional view of the overall structure of an embodiment of the present utility model;

fig. 9 is a partial cross-sectional view of a main pump assembly according to an embodiment of the present utility model.

In the figure:

10-a power assembly; 11-a housing; 111-a receiving cavity; 112-a connector; 1121-a first connection hole; 12-core; 120-functional cavity; 121-a sealed housing; 1211-a second connection hole; 1212-fasteners; 1213-interface; 122-a deflector; 123-connecting cylinders; 1231-pump chamber; 1232-first fixing column; 13-a pressure regulating member; 131-leaves; 14-a rotor; 15-a stator; 16-first sealing; 17-bearings; 18-second sealing;

20-a main pump assembly; 201-connecting a pipe; 202-a main pump chamber; 203-a second fixed column; 204-third sealing; 205-fourth seal; 206-fifth sealing; 21-a central axis; 22-swash plate; 23-a plunger assembly; 231-a body; 232-an elastic member; 24-heat conducting columns; 301-a dielectric cavity; 302-adjusting the cavity; 303-a heat exchange cavity; 31-a first tube; 32-a second tube.

Detailed Description

Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms described above will be understood to those of ordinary skill in the art in a specific context.

The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc. refer to an orientation or positional relationship based on that shown in the drawings, or that is conventionally put in place when the inventive product is used, merely for convenience of description and simplicity of description, and do not indicate or imply that the apparatus or housing in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the utility model.

The terms "first," "second," "third," and the like are merely used to distinguish between similar shells and do not indicate or imply a relative importance or a particular order.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a list of elements does not include only those elements but may include other elements not expressly listed.

Fig. 1 is a schematic diagram of the overall structure of the self-cooling type reciprocating pump according to the present utility model, and fig. 2 is an exploded schematic diagram of the overall structure, in which, for convenience of description of the positional relationship and connection relationship of the components, an end of the power assembly 10, which is close to the main pump assembly 20 in the direction of the axis L, is defined as a proximal pump side, and an end thereof, which is far from the main pump assembly 20, is defined as a distal pump side.

With reference to fig. 1 and 2, the self-cooling type reciprocating pump provided by the utility model comprises a power assembly 10 and a main pump assembly 20, wherein the power assembly 10 is coaxially connected with the main pump assembly 20, a cooling medium flows into the main pump assembly 20 from the power assembly 10 and flows out from the main pump assembly 20, and the cooling medium is used for carrying out heat exchange and cooling on the power assembly 10 and the main pump assembly 20, so that the problems of service life reduction, power output limitation and the like caused by high temperature are avoided, the whole reciprocating pump is in a safe and reliable working environment, the working efficiency of the reciprocating pump is improved, and the service life is prolonged.

The power assembly 10 includes a housing 11 and a core 12, the housing 11 includes a housing cavity 111, the housing cavity 111 is a cavity mechanism opening at a pump side near of the housing 11, the housing cavity 111 is used for housing the core 12, the core 12 is installed in the housing cavity 111, and the core 12 is connected with the housing 11 coaxially (axis L), an orthographic projection of the housing cavity 111 on the axis L completely surrounds an orthographic projection of the core 12 on the axis L, when the core 12 is located in the housing cavity 111, a medium cavity 301 is formed between a radially inner side wall of the housing cavity 111 and a radially outermost surface of the core 12, that is, a medium cavity 301 is reserved between a radially innermost surface of the housing 11 and a radially outermost surface of the core 12 for cooling medium to flow through, when the cooling medium enters the medium cavity 301, the cooling medium contacts with an outer surface of the core 12, exchanges heat with the core 12, and heat generated by the core 12 is taken away, so that cooling of the core 12 is achieved.

Referring to fig. 1 and 3, the power assembly 10 includes a first pipe 31 disposed on a distal pump side of the housing 11, the first pipe 31 being in communication with the accommodating chamber 111, more specifically, the first pipe 31 being in communication with the medium chamber 301, the first pipe 31 being for connection with an external medium source, and a cooling medium entering the medium chamber 301 through the first pipe 31.

For example, the external medium source of the first tube 31 may be provided as a tap. As shown in fig. 2, the core 12 is provided with a seal shell 121 on the distal pump side, the outermost contour dimension of the seal shell 121 in the direction orthogonal to the axis L is greater than the outermost contour dimension of the core 12 in the direction orthogonal to the axis L and greater than the outermost contour dimension of the accommodating chamber 111 in the direction orthogonal to the axis L, that is, the outermost contour dimension of the seal shell 121 in the radial direction is greater than the outermost contour dimension of the core 12 in the radial direction and greater than the outermost contour dimension of the accommodating chamber 111 in the radial direction, more specifically, the orthographic projection of the seal shell 121 in the direction of the axis L completely encloses the core 12 and the orthographic projection of the accommodating chamber 111, and when the core 12 is connected with the housing 11, the seal shell 121 contacts and is connected with the proximal pump side of the housing 11, and sealing of the medium chamber 301 can be realized through the seal shell 121 to prevent leakage of the cooling medium, avoid loss of the cooling medium, and ensure cooling efficiency.

In one example, the central axes of the sealing shell 121 and the core 12 are coincident, that is, the core 12 and the sealing shell 121 are coaxially arranged, so that the processing difficulty can be reduced, and the overall aesthetic property and design sense are ensured.

In another example, the sealing shell 121 is not coincident with the central axis of the core 12, i.e., the sealing shell 121 is disposed eccentrically to the core 12, and thus can also serve as a seal for the medium chamber 301 and a connection with the housing 11.

In one example, the core 12 is integrally formed with the seal housing 121.

In another example, the core 12 and the sealing shell 121 are connected by welding.

Fig. 3 is a cross-sectional view of the whole structure of the self-cooled reciprocating pump according to the present utility model, and in one possible example, with reference to fig. 2 and fig. 3, the connection manner of the housing 11 and the core 12 is as follows: at least one connecting piece 112 is arranged on the radially outermost surface of the shell 11 on the side close to the pump in a protruding mode, a first connecting hole 1121 is formed in the connecting piece 112, a second connecting hole 1211 is formed in the sealing shell 121, the second connecting hole 1211 is matched with the first connecting hole 1121, the first connecting hole 1121 and the second connecting hole 1211 are connected through a fastener 1212, and then quick connection between the shell 11 and the core 12 is achieved.

Illustratively, the first connecting hole 1121 and the second connecting hole 1211 are screw holes, the fastening member 1212 is a bolt, and the screw connection is simple in process, convenient in assembly and disassembly, and convenient in maintenance and overhaul.

In one possible example, the first housing 11 is provided in a cylindrical shape.

In one possible example, the second housing 12 is provided in a cylindrical shape.

In one possible example, the first cavity 111 is provided as a cylindrical cavity.

As shown in fig. 2, the power assembly 10 includes a pressure regulating member 13, where the pressure regulating member 13 is disposed between a wall of the receiving chamber 111 on the distal pump side and the core 12, and is disposed coaxially with the housing 11 and the core 12, the pressure regulating member 13 is rotatable about an axis L, the distal pump side of the pressure regulating member 13 is provided with a protruding vane 131, and when the pressure regulating member 13 is disposed in the receiving chamber 111, a regulating chamber 302 is formed between the pressure regulating member 13 and the wall of the receiving chamber 111 on the distal pump side, and the regulating chamber 302 is in communication with the first pipe 31 and the medium chamber 301;

by rotating the pressure regulating member 13 around the axis L, the cooling medium from the first pipe member 31 is powered, and the cooling medium can enter the housing 11 through the first pipe member 31, more specifically, the cooling medium enters the regulating chamber 302 through the first pipe member 31, during the rotation of the pressure regulating member 13, the blades 131 disturb the cooling medium, so that the cooling medium is pressurized under the centrifugal force, the high-pressure cooling medium enters the medium chamber 301 from the regulating chamber 302, and the cooling medium contacts the core 12 in the medium chamber 301 to generate heat exchange with the core 12, so as to play a role in heat dissipation and cooling of the core 12.

In one example, the diameter dimension of the pressure regulator 13 is smaller than the diameter dimension of the receiving cavity 111, and the diameter dimension of the pressure regulator 13 may be greater than, equal to, or smaller than the diameter dimension of the core 12.

In the working process of the conventional reciprocating pump, the reciprocating motion of the plunger assembly 23 is utilized to enable the interior of the reciprocating pump to form a vacuum cavity, and the medium is pumped into the vacuum cavity by utilizing the pressure difference between the vacuum cavity in the reciprocating pump and the external atmospheric pressure, so that the energy of the medium is lost in the process, and the pressure of the medium during pumping out is influenced.

In some existing reciprocating pumps, a booster pump is usually arranged outside the reciprocating pump to boost the medium so as to improve the pumping pressure of the medium, but the space occupation of the whole reciprocating pump system is increased by the mode, a pipeline is additionally arranged between the booster pump and the reciprocating pump to transmit the medium, the input cost is increased, and the method has certain limitation.

In a possible example, referring to fig. 2 and fig. 3, the outermost surface of the core 12 in the direction orthogonal to the axis L is convexly provided with the guide vane 122, that is, the outermost surface of the core 12 in the radial direction is convexly provided with the guide vane 122, the guide vane 122 is accommodated in the medium cavity 301, and the guide vane 122 is used for increasing the contact area between the cooling medium in the medium cavity 301 and the core 12, so as to further improve the heat dissipation efficiency.

For example, the guide vane 122 may be disposed on the radially inner wall of the accommodating chamber 111, or may be disposed on the radially outermost surface of the core 12 and the radially inner wall of the accommodating chamber 111.

Illustratively, as shown in fig. 5, the guide vane 122 is configured in a spiral shape, so as to play a role in guiding the cooling medium, and the cooling medium can flow around the medium cavity 301 along the spiral guide vane 122, so as to promote heat dissipation balance of the core 12.

Illustratively, the guide vane 122 extends along the direction of the axis L, and a guide gap is left between the two ends of the guide vane 122 in the axial direction and the two ends of the core 12 and/or the accommodating cavity 111 in the axial direction, and through the gap, the coolant medium is facilitated to enter the medium cavity 301 from the adjusting cavity 302 and enter the main pump assembly 20 from the medium cavity 301, and the extending along the direction of the axis L may be parallel to the axis L or form a certain angle with the axis L, so as to increase the contact area between the coolant medium and the core 12 and ensure the heat dissipation efficiency.

In one example of this embodiment, as shown in fig. 6, fig. 6 (a) is a sectional view of the power assembly 10, fig. 6 (B) is a simplified view showing the medium chamber 301 more intuitively, the core 12 is disposed along the axis L with a diameter dimension on the proximal pump side smaller than that on the distal pump side, the diameter of the accommodating chamber 111 is fixed, as shown in fig. 6 (B), the medium chamber 301 is made smaller on the distal pump side and larger on the proximal pump side, that is, the medium chamber 301 includes a closing-in section on the distal pump side, and the medium chamber 301 includes a flaring section on the proximal pump side, so that, when the cooling medium enters the medium chamber 301 from the adjusting chamber 302 and flows from the distal pump side to the proximal pump side of the medium chamber 301, pressurization can be achieved from the closing-in section to the flaring section, and can be mated with the pressure regulator 13, so that secondary pressurization of the cooling medium can be achieved.

The diameter of the core 12 varies linearly along the axis L, for example, but may vary non-linearly.

In another example of this embodiment, the diameter of the core 12 is fixed, the diameter of the proximal side of the accommodating chamber 111 is larger than the diameter of the distal side thereof, so that the diameter of the medium chamber 301 is smaller on the distal side and larger on the proximal side, that is, on the distal side, the medium chamber 301 includes a closing-in section, and on the proximal side, the medium chamber 301 includes a flaring section, so that when the cooling medium enters the medium chamber 301 from the adjusting chamber 302 and flows from the distal side to the proximal side of the medium chamber 301, the pressurization can be realized, and the secondary pressurization of the cooling medium can be realized in cooperation with the adjusting member 13.

Illustratively, the diametric dimension of the receiving cavity 111 varies linearly along the axis L.

In another example of this embodiment, both the core 12 and the receiving chamber 111 are configured to be variable diameter such that the medium chamber 301 has a smaller diameter on the distal pump side and a larger diameter on the proximal pump side.

In another example of this embodiment, as shown in fig. 7, fig. 7 (a) is a sectional view of the power assembly 10, fig. 7 (B) is a simplified view for more intuitively showing the medium chamber 301, the core 12 is disposed along the axis L with a diameter larger than that of both ends of the core 12 along the axial direction, the diameter of the accommodating chamber 111 is fixed, the diameter of both ends of the medium chamber 301 on the proximal and distal pump sides is larger than that of the middle, and the medium chamber 301 includes two flared sections and a closed section connecting the two flared sections, so that the cooling medium can be pressurized when entering the medium chamber 301 from the adjusting chamber 302, and can be matched with the pressure adjusting member 13 to realize secondary pressurization of the cooling medium.

In another example of this embodiment, the diameter of the core 12 is fixed, the diameter dimension of the middle part of the accommodating chamber 111 is smaller than the diameter dimension of the two ends along the axial direction, the diameter dimension of the two ends of the medium chamber 301 on the near pump side and the far pump side is larger than the diameter dimension of the middle part thereof, and the medium chamber 301 comprises two flaring sections and a closing section connecting the two flaring sections, so that the cooling medium can realize pressurization when entering the medium chamber 301 from the adjusting chamber 302 and can be matched with the pressure adjusting piece 13, and the secondary pressurization of the cooling medium can be realized.

In another example of the present embodiment, both the core 12 and the accommodation chamber 111 are provided to be variable in diameter.

The structure is used for carrying out secondary pressurization on the cooling medium, so that the pumping pressure of the cooling medium can be further improved, the whole volume of the reciprocating pump can not be additionally increased, and the device has good economical efficiency and practicability.

As shown in fig. 2, the main pump assembly 20 includes a connection pipe 201 and a heat exchange cavity 303, the connection pipe 201 is communicated with the heat exchange cavity 303, an interface 1213 is arranged on the pump side near the core 12, the interface 1213 is communicated with the medium cavity 301, the connection pipe 201 is connected with the interface 1213, so as to realize the communication between the medium cavity 301 and the heat exchange cavity 303, and a cooling medium in the medium cavity 301 enters the heat exchange cavity 303 through the interface 1213 and the connection pipe 201 and flows out of the heat exchange cavity 303.

The main pump assembly 20 includes a second pipe member 32, the second pipe member 32 being in communication with the heat exchange chamber 303, the cooling medium from the connection pipe 201 flowing to the second pipe member 32 via the heat exchange chamber 303, and being discharged from the main pump assembly 20 by the second pipe member 32.

As shown in fig. 2, the main pump assembly 20 includes a main pump cavity 202, and a central shaft 21, a swash plate 22 and a plunger assembly 23 disposed in the main pump cavity 202, one end of the central shaft 21 is connected with the swash plate 22, a main body of the central shaft 21 is disposed in the core 12, one end of the central shaft away from the swash plate 22 penetrates through the core 12 and is connected with the pressure regulating member 13, the central shaft 21 is coaxially disposed with the housing 11 and the core 12, the swash plate 22 is obliquely disposed, one side end surface of the swash plate 22 away from the central shaft 21 in the axial direction contacts with the plunger assembly 23, the central shaft 21 can rotate around an axis L to drive the swash plate 22 and the pressure regulating member 13 to rotate around the axis L, and in the rotation process of the swash plate 22, the contact surface of the swash plate 22 and the plunger assembly 23 in the axial direction will generate a height change due to the oblique arrangement, so that the reciprocating motion of the plunger assembly 23 in the axial direction is realized.

Illustratively, gear oil is disposed within the main pumping chamber 202.

As shown in fig. 2, the plunger assembly 23 includes a main body 231 and an elastic member 232 sleeved outside the main body 231, the main body 231 is used for contacting with the swash plate 22, when the swash plate 22 rotates to a higher position of a contact surface of the swash plate 22 with the main body 231 to enable the plunger assembly 23 to axially move, the elastic member 232 is extruded to generate elastic deformation, when the swash plate 22 continues to rotate to a lower position of a contact surface of the swash plate 22 with the plunger assembly 23, the elastic member 232 is deformed to be restored, and the restoring force enables the main body 231 to be restored, so that the reciprocating movement of the plunger assembly 23 in the axial direction can be realized.

Illustratively, the body 231 is provided as a hollow post.

As shown in fig. 3, the core 12 includes a functional cavity 120, where the functional cavity 120 is a cavity structure with two ends open along the direction of the axis L, that is, the functional cavity 120 includes a first opening and a second opening (not labeled in the drawing), where the first opening is located on the near pump side of the core 12, the second opening is located on the far pump side of the core 12, one end of the central shaft 21 penetrates through the first opening to be connected with the swash plate 22, and the other end penetrates through the second opening to be connected with the pressure regulator 13.

As shown in fig. 3, the functional cavity 120 is provided with a rotor 14 and a stator 15, the rotor 14 is sleeved on the central shaft 21 and is coaxially arranged with the central shaft 21, the stator 15 is sleeved on the rotor 14 and is coaxially arranged with the rotor 14, and when the central shaft 21 rotates around the shaft L, the rotor 14 is driven to rotate around the axial direction.

Referring to fig. 3 and 4, the central shaft 21 is provided with a first seal 16 at a position close to the first opening and the second opening, the first seal 16 is respectively disposed at a connection position between the central shaft 21 and the first opening and a connection position between the central shaft 21 and the second opening, and a good sealing effect can be achieved by the arrangement of the first seal 16, so that cooling medium is prevented from penetrating into the functional cavity 120, loss of the cooling medium is reduced, and functions of the central shaft 21, the rotor 14 and the stator 15 are guaranteed.

With reference to fig. 3 and fig. 4, a bearing 17 is disposed between the central shaft 21 and the core 12, and the relative rotation between the core 12 and the central shaft 21 is achieved by the bearing 17, and illustratively, the bearings 17 are disposed in two, and are disposed at two ends of the central shaft 21, more specifically, at a connection portion between the central shaft 21 and the first opening, and at a connection portion between the central shaft 21 and the second opening.

Referring to fig. 3 and 4, a second seal 18 is disposed between the housing 11 and the core 12, and the second seal 18 is disposed on the pump-proximal side of the core 12 and the housing 11, more specifically, between the seal housing 121 and the housing 11, so that leakage of the cooling medium can be prevented, loss of the cooling medium can be reduced, and cooling effect can be ensured by the arrangement of the second seal 18.

Referring to fig. 2 and 3, a connecting cylinder 123 is disposed on the proximal side of the core 12, the connecting cylinder 123 is connected with the core 12 through a sealing shell 121, the connecting cylinder 123 includes a pump connecting cavity 1231, the pump connecting cavity 1231 is communicated with the main pump cavity 202, the pump connecting cavity 1231 is communicated with the functional cavity 120 through a first opening, one end of the central shaft 21 on the proximal side passes through the functional cavity 120 through the first opening, and one end of the central shaft 21 on the proximal side, a swash plate 22 and a plunger assembly 23 are disposed in a containing space formed by the pump connecting cavity 1231 and the main pump cavity 202.

Illustratively, the connecting cylinder 123 is integrally formed with the seal housing 121.

For example, referring to fig. 2 and 8, a first fixing post 1232 is disposed on the radially outermost surface of the connecting cylinder 123, a first fixing hole is formed in the first fixing post 1232, the main pump assembly 20 includes a second fixing post 203, a second fixing hole is formed in the second fixing post 203, and the connecting cylinder 123 is connected to the main pump assembly 20 through the first fixing hole and the second fixing hole.

Illustratively, as shown in FIG. 3, a third seal 204 is provided between the connecting cylinder 123 and the main pump assembly 20, and by providing the third seal 204, a tight connection of the connecting cylinder 123 to the main pump assembly 20 can be ensured.

Illustratively, as shown in fig. 3, the main pump assembly 20 further includes a fourth seal 205, where the fourth seal 205 is sleeved on the main body 231 of the plunger assembly 23, and the fourth seal 205 can perform the functions of sealing and locking oil to ensure lubrication of the plunger assembly 23.

Illustratively, as shown in FIG. 3, the main pump assembly 20 further includes a fifth seal 206, wherein the fifth seal 206 is disposed over the body 231 of the plunger assembly 23 and is capable of sealing.

Referring to fig. 3 and 8, the main pump assembly 20 includes at least one heat conducting column 24, the axial direction of the heat conducting column 24 is parallel to the axis L, the heat conducting column 24 is disposed in the main pump cavity 202, the heat exchanging cavity 303 is disposed in the heat conducting column 24, the heat conducting column 24 is communicated with the connecting pipe 201, and the heat conducting column 24 is communicated with the second pipe fitting 32, since the heat conducting column 24 is disposed in the main pump cavity 202, hot oil is generally disposed in the main pump cavity 202, and when a cooling medium enters the heat exchanging cavity 303 of the heat conducting column 24 from the connecting pipe 201, heat exchange is generated between the heat conducting column 24 and the main pump cavity 202 to reduce the temperature in the main pump cavity 202.

Illustratively, the thermally conductive post 24 is disposed coaxially with the central shaft 21 to avoid taking up installation space for the plunger assembly 23.

Illustratively, a check valve is provided in the connecting tube 201 to prevent the cooling medium from flowing backward.

Illustratively, a one-way valve is provided within the second tube member 32 to prevent backflow of the cooling medium.

Based on the self-cooling type reciprocating pump, the utility model also provides a control method of the self-cooling type reciprocating pump, which comprises the following steps:

the power assembly 10 is electrified and started, the rotor 14 rotates to drive the central shaft 21 to rotate around the axial direction, the pressure regulating piece 13 rotates around the axial direction, the pressure regulating piece 13 supplies power to the cooling medium, the cooling medium enters the regulating cavity 302 from the first pipe fitting 31, the cooling medium just entering the regulating cavity 302 has a first pressure, and centrifugal force is provided for the cooling medium through the rotation of the blades 131 around the axial direction, so that the cooling medium is pressurized from the first pressure to a second pressure;

the cooling medium enters the medium cavity 301 from the adjusting cavity 302, contacts with the outermost surface of the core 12 along the radial direction and exchanges heat, absorbs the heat of the core 12, and realizes the cooling of the core 12;

the cooling medium enters the heat exchange cavity 303 from the medium cavity 301, exchanges heat with the inside of the main pump assembly 20 in the heat exchange cavity 303, absorbs heat in the main pump assembly 20, achieves cooling of the main pump assembly 20, and is discharged out of the main pump assembly 20 from the second pipe fitting 32.

The utility model provides a control method of a self-cooling reciprocating pump, which further comprises the following steps:

the power assembly 10 is electrified and started, the rotor 14 rotates to drive the central shaft 21 to rotate around the axial direction, the pressure regulating piece 13 rotates around the axial direction, the pressure regulating piece 13 supplies power to the cooling medium, the cooling medium enters the regulating cavity 302 from the first pipe fitting 31, the cooling medium just entering the regulating cavity 302 has a first pressure, and centrifugal force is provided for the cooling medium through the rotation of the blades 131 around the axial direction, so that the cooling medium is pressurized from the first pressure to a second pressure;

the cooling medium enters the medium cavity 301 from the adjusting cavity 302, contacts with the outermost surface of the core 12 along the radial direction and exchanges heat, absorbs the heat of the core 12, and realizes the cooling of the core 12, and in the medium cavity 301, as the medium cavity 301 is arranged in a variable diameter mode, the cooling medium passing through the medium cavity 301 is pressurized, and the medium cavity 301 is pressurized from the second pressure to the third pressure;

the cooling medium enters the heat exchange cavity 303 from the medium cavity 301, exchanges heat with the inside of the main pump assembly 20 in the heat exchange cavity 303, absorbs heat in the main pump assembly 20, achieves cooling of the main pump assembly 20, and is discharged out of the main pump assembly 20 from the second pipe fitting 32.

In summary, in the self-cooling type reciprocating pump provided by the utility model, the power assembly 10 includes the first pipe fitting 31, the housing 11 and the core 12 form the medium cavity 301 communicated with the first pipe fitting, the first pipe fitting 31 is used for introducing the cooling medium into the medium cavity 301, the core 12 is installed in the housing 11, and the cooling medium exchanges heat with the core 12 in the medium cavity 301 to ensure the safety of the working environment of the power assembly 10 and prolong the service life of the power assembly 10; the main pump assembly 20 comprises a heat exchange cavity 303 communicated with the medium cavity 301, cooling medium enters the heat exchange cavity 303 through the medium cavity 301, heat exchange is achieved between the cooling medium and the inside of the main pump assembly 20 in the heat exchange cavity 303, and then the cooling medium is discharged through the second pipe fitting 32, so that the main pump assembly 20 can be subjected to heat exchange and cooling, the service life of the main pump assembly 20 is prolonged, and the output power of a pump body is guaranteed.

The control method of the self-cooling reciprocating pump can control the heat of the pump body, realizes heat exchange and cooling of the power assembly 10 and the main pump assembly 20 through the cooling medium, is simple and reliable, improves the output power of the pump body, and prolongs the service life.

It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.

Claims (14)

1. A self-cooled reciprocating pump, characterized by: including power pack (10) and main pump assembly (20), power pack (10) with main pump assembly (20) coaxial coupling, power pack (10) include casing (11) and core (12), casing (11) are including holding chamber (111), core (12) install in hold in chamber (111), and with casing (11) coaxial coupling, hold chamber (111) along radial chamber wall with core (12) along radial outside surface cooperation forms medium chamber (301), the far pump side of casing (11) is equipped with first pipe fitting (31), first pipe fitting (31) are used for connecting the medium source, the medium source is used for providing cooling medium to power pack (10) and in main pump assembly (20), first pipe fitting (31) with medium chamber (301) intercommunication, heat transfer chamber (303) and second pipe fitting (32), heat transfer chamber (303) and medium chamber (301), with second pipe fitting (32) are in heat transfer chamber (303) and heat transfer medium.

2. A self-cooling reciprocating pump according to claim 1, wherein: the power assembly (10) comprises a pressure regulating piece (13), the pressure regulating piece (13) is arranged in the accommodating cavity (111), the pressure regulating piece (13) is located between the cavity wall of the far pump side of the accommodating cavity (111) and the core body (12), the pressure regulating piece (13) and the shell (11) are coaxially arranged, the pressure regulating piece (13) can rotate around the axial direction, the far pump side of the pressure regulating piece (13) is convexly provided with blades (131), a regulating cavity (302) is formed between the pressure regulating piece (13) and the cavity wall of the far pump side of the accommodating cavity (111), and the regulating cavity (302) is communicated with the first pipe fitting (31) and the medium cavity (301).

3. A self-cooling reciprocating pump according to claim 1 or 2, characterized in that: the cooling device is characterized in that a guide vane (122) is arranged on the outermost surface of the core body (12) along the radial direction in a protruding mode, and/or the guide vane (122) is arranged on the cavity wall of the containing cavity (111) along the radial direction in a protruding mode, the guide vane (122) is contained in the medium cavity (301), and the guide vane (122) is used for increasing the contact area between a cooling medium in the medium cavity (301) and the core body (12).

4. A self-cooling reciprocating pump according to claim 1, wherein: the main pump assembly (20) comprises a connecting pipe (201), the connecting pipe (201) is communicated with the heat exchange cavity (303), an interface (1213) is arranged on the pump-near side of the core body (12), the interface (1213) is communicated with the medium cavity (301), and the interface (1213) is connected with the connecting pipe (201) so as to realize the communication between the medium cavity (301) and the heat exchange cavity (303).

5. A self-cooling reciprocating pump according to claim 2, characterized in that: the main pump assembly (20) comprises a main pump cavity (202), and a central shaft (21), a swash plate (22) and a plunger assembly (23) which are arranged in the main pump cavity (202), one end of the central shaft (21) is connected with the swash plate (22), the other end of the central shaft passes through the inside of the core body (12) and is connected with the pressure regulating element (13), the central shaft (21) is coaxially arranged with the core body (12), the central shaft (21) rotates around the axial direction to drive the swash plate (22) and the pressure regulating element (13) to rotate around the axial direction, one end, away from the central shaft (21), of the swash plate (22) is contacted with the plunger assembly (23), and the swash plate (22) rotates around the axial direction to drive the plunger assembly (23) to reciprocate along the axial direction.

6. A self-cooling reciprocating pump according to claim 5, wherein: the core body (12) comprises a functional cavity (120), a rotor (14) and a stator (15) are arranged in the functional cavity (120), and the rotor (14) is sleeved on the central shaft (21) and can rotate around the axial direction along with the central shaft (21).

7. A self-cooling reciprocating pump according to claim 6, wherein: the pump-far side of the core body (12) is provided with a sealing shell (121), the radial outermost contour dimension of the sealing shell (121) is larger than the radial outermost contour dimension of the core body (12), the radial outermost contour dimension of the sealing shell (121) is larger than the radial outermost contour dimension of the containing cavity (111), and when the shell (11) is connected with the core body (12), the sealing shell (121) is contacted with and connected with the pump-near side of the shell (11).

8. A self-cooling reciprocating pump according to claim 7, wherein: at least one connecting piece (112) is arranged on the outer side surface of the shell (11) near the pump side along the radial direction in a protruding mode, a first connecting hole (1121) is formed in the connecting piece (112), a second connecting hole (1211) is formed in the sealing shell (121), the second connecting hole (1211) is matched with the first connecting hole (1121), and the shell (11) is connected with the core body (12) through a fastener (1212).

9. A self-cooling reciprocating pump according to claim 7, wherein: the nearly pump side of core (12) is equipped with and connects jar (123), connect jar (123) pass through seal shell (121) with core (12) are connected, connect jar (123) including linking pump chamber (1231), link pump chamber (1231) with main pump chamber (202) and function chamber (120) intercommunication, the nearly pump side of center pin (21) one end sloping cam plate (22) plunger subassembly (23) set up in link pump chamber (1231) with in the accommodation space that main pump chamber (202) formed.

10. A self-cooling reciprocating pump according to claim 4, wherein: the main pump assembly (20) comprises a main pump cavity (202), at least one heat conducting column (24) is arranged in the main pump cavity (202), the heat conducting column (24) is arranged in parallel with a plunger assembly (23) in the main pump cavity (202), a heat exchanging cavity (303) is arranged in the heat conducting column (24), and the heat exchanging cavity (303) is communicated with the connecting pipe (201) and the second pipe fitting (32).

11. A self-cooling reciprocating pump according to claim 1 or 2, characterized in that: the medium chamber (301) has a smaller diameter on the distal pump side than on the proximal pump side.

12. A self-cooling reciprocating pump according to claim 11, wherein: the core body (12) is of a fixed diameter size, the diameter size of the proximal pump side of the accommodating cavity (111) is larger than the diameter size of the distal pump side of the accommodating cavity, or the diameter size of the proximal pump side of the core body (12) is smaller than the diameter size of the distal pump side of the core body, and the accommodating cavity (111) is of a fixed diameter size.

13. A self-cooling reciprocating pump according to claim 1 or 2, characterized in that: the diameter of the two ends of the medium cavity (301) along the axial direction is larger than that of the middle part of the medium cavity.

14. A self-cooling reciprocating pump according to claim 13, wherein: the diameter size of the middle part of the core body (12) is larger than the diameter sizes of the two ends of the core body along the axial direction, the accommodating cavity (111) is of a fixed diameter size, or the diameter size of the middle part of the accommodating cavity (111) is smaller than the diameter sizes of the two ends of the core body along the axial direction, and the core body (12) is of a fixed diameter size.