A plunger pump with electric control adjustment function

Abstract

The present application relates to the technical fields of plunger pump, especially to a plunger pump with electric control adjusting function, which comprises a pump body (1) and a pump cover (2), the pump cover (2) is provided with a water inlet (3) and a water outlet (4), and the pump cover (2) is provided with a water inlet channel (5) communicated with the water inlet (3) and a water outlet channel (6) communicated with the water outlet (4), characterized in that: the pump cover (2) is further provided with an adjusting mechanism for adjusting water pressure, the adjusting mechanism comprises a valve cavity (7) communicated with the water outlet channel (6) and the water inlet channel (5), a valve rod (8) arranged in the valve cavity (7) for adjusting the conduction between the valve cavity (7) and the water inlet channel (5), a spring (9) and a control device (10) for controlling the position of the valve rod (8) in the valve cavity (7), one end of the spring (9) is in abutment with the valve cavity (7), the other end of the spring (9) is in abutment with one end of the valve rod (8), and the other end of the valve rod (8) is connected with the control device (10). The plunger pump can adjust water pressure and flow, so as to better meet the needs of users.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plunger pump, in particular to a plunger pump with electric control adjustment function. BACKGROUND

[0002] The plunger pump is an important component of high-pressure cleaning machine. It relies on the reciprocating movement of the plunger in the cylinder to change the volume of the sealed working cavity to realize oil suction and oil compression. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow regulation.

[0003] However, the plunger pump of the prior art does not have a pressure regulating function, so its function is relatively single and cannot meet the needs of some customers. SUMMARY

[0004] The technical solution of the present application is to provide a plunger pump with electric control adjustment function, which can regulate the water pressure and flow rate, so as to better meet the needs of users.

[0005] The technical solution adopted by the present application is a plunger pump with electric control adjustment function, comprising a pump body and a pump cover, the pump cover is provided with a water inlet and a water outlet, and the pump cover is provided with a water inlet channel and a water outlet channel which are in communication with the water inlet and the water outlet respectively, the pump cover is also provided with an adjusting mechanism for adjusting the water pressure, the adjusting mechanism comprises a valve cavity in communication with the water outlet channel and the water inlet channel, a valve rod arranged in the valve cavity for adjusting the conduction between the valve cavity and the water inlet channel, a spring and a control device for controlling the position of the valve rod in the valve cavity, one end of the spring abuts against the valve cavity, the other end of the spring abuts against one end of the valve rod, and the other end of the valve rod is connected with the control device,

[0006] When the control device controls the valve rod to be in the first position, the connection between the valve cavity and the water inlet channel is closed;

[0007] When the control device controls the valve rod to be in the second position, the connection between the valve cavity and the water inlet channel is completely open;

[0008] When the control device controls the valve rod to be between the first position and the second position, the connection between the valve cavity and the water inlet channel is partially open.

[0009] As a preferred, the adjusting mechanism further comprises a valve seat arranged in the valve cavity, the valve seat is provided with a through hole in communication with the connection between the valve cavity and the water inlet channel, and sealing rings are arranged on both sides of the through hole, the valve rod extends into the valve seat and vertically slides in the valve seat, and the valve rod is provided with a first surface, an inclined surface and a second surface, the first surface and the second surface are connected and transitioned through the inclined surface,

[0010] When the control device controls the valve stem to be in the first position, the first face is opposite to the through hole, and the through hole is blocked by the first face;

[0011] When the control device controls the valve stem to be in the second position, the second face is opposite to the through hole, and the through hole is fully opened;

[0012] When the control device controls the valve stem to be between the first position and the second position, the inclined face is opposite to the through hole, and the through hole is partially opened.

[0013] As a preferred, the inclined face is two sections, the first inclined face and the second inclined face, the first inclined face is close to the first face, the second inclined face is close to the second face, and the inclined angle of the first inclined face is smaller than that of the second inclined face.

[0014] As a preferred, the valve stem is provided with a ring of limiting blocks matched with the valve seat, and the limiting block in contact with the bottom of the valve seat is an inclined arc face,

[0015] When the control device controls the valve stem to be in the first position, the inclined arc face is in contact with the bottom of the valve seat to seal, and the water outlet channel is closed with the inside of the valve seat;

[0016] When the control device controls the valve stem to be in the second position, the inclined arc face is separated from the bottom of the valve seat, and the water outlet channel is communicated with the inside of the valve seat;

[0017] When the control device controls the valve stem to be between the first position and the second position, the inclined arc face is separated from the bottom of the valve seat, and the water outlet channel is communicated with the inside of the valve seat.

[0018] As a preferred, the control device includes a control board, a shell, a gear set arranged in the shell in sequence, and a power mechanism for driving the first gear in the gear set to rotate, the rotation shaft of the last gear in the gear set is threadedly connected with a threaded hole in the shell, the other end of the valve stem is fixed with the rotation shaft of the last gear in the gear set, and the motor is electrically connected with the control board.

[0019] As a preferred, the shell is provided with a limit switch for limiting the moving position of the last gear in the gear set, the limit switch includes a first limit switch for limiting the upper position and a second limit switch for limiting the lower position, and the first limit switch and the second limit switch are electrically connected with the control board.

[0020] As a preferred, it further includes a sensor for detecting the number of rotation turns of the first gear, and the sensor is electrically connected with the control board.

[0021] As a preferred, the control device further includes a wireless communication module, and the wireless communication module is electrically connected with the control board.

[0022] Compared with the prior art, the present application has the following advantages: one adjusting mechanism is arranged, and then the position of the valve rod in the adjusting mechanism is controlled by the control mechanism to realize the conduction between the water inlet channel and the water outlet channel, so that the water outlet pressure and flow can be adjusted.

[0023] By arranging the first surface, the inclined surface and the second surface on the valve rod, and then adjusting the position of the valve rod to realize that the three surfaces are respectively opposite to the through hole, the conduction relationship between the water inlet channel and the valve seat can be well controlled, and the water outlet pressure and flow can be well adjusted.

[0024] The inclined surface is arranged as two, so that the adjustment is more gradual and the adjustment accuracy is higher.

[0025] The limiting block is arranged on the valve rod, and the upper end surface of the limiting block is an inclined arc surface, so that when the limiting block abuts against the bottom of the valve seat, the two are point-surface contact instead of surface-surface contact, so that when the valve rod is in the first position, the sealing between the limiting block and the bottom of the valve seat is better, and the sealing between the water outlet channel and the water inlet channel is better.

[0026] By using this control device, the vertical position of the valve rod can be conveniently controlled by the motor, and the water outlet pressure and flow can be controlled.

[0027] Two limiting switches are arranged in the control device, so that the valve rod can be controlled to move within the limited position.

[0028] The sensor is arranged, so that the rotation speed of the first gear driven by the motor can be well detected.

[0029] A wireless communication module is arranged, so that the plunger pump can be remotely controlled and adjusted more conveniently. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic view of the plunger pump with the electric control adjusting function.

[0031] Figure 2 is a sectional view of the plunger pump with the electric control adjusting function.

[0032] Figure 3 is Figure 2 is an enlarged schematic view of A.

[0033] Figure 4 is a structural schematic view of the valve rod in the plunger pump with the electric control adjusting function.

[0034] Figure 5 is a structural schematic view of the valve seat in the plunger pump with the electric control adjusting function.

[0035] Figure 6 is a schematic view of a half-shell control device of a plunger pump with electric control adjustment function.

[0036] As shown in the figure: 1, pump body; 2, pump cover; 3, water inlet; 4, water outlet; 5, water inlet channel; 6, water outlet channel; 7, valve cavity; 8, valve rod; 9, spring; 10, control device; 11, valve seat; 12, through hole; 13, sealing ring; 14, first surface; 15, second surface; 16, first inclined surface; 17, second inclined surface; 18, limit block; 19, inclined arc surface; 20, control plate; 21, shell; 22, gear set; 23, power mechanism; 24, first limit switch; 25, second limit switch; 26, sensor. DETAILED DESCRIPTION

[0037] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0038] Example one:

[0039] A plunger pump with electric control adjustment function, comprising a pump body 1 and a pump cover 2, the pump cover 2 is provided with a water inlet 3 and a water outlet 4, and the pump cover 2 is provided with a water inlet channel 5 communicating with the water inlet 3 and a water outlet channel 6 communicating with the water outlet 4, and the pump cover 2 is further provided with an adjustment mechanism and a control device 10, wherein:

[0040] The adjustment mechanism comprises a valve cavity 7, a valve seat 11, a valve rod 8 and a spring 9, wherein:

[0041] The valve cavity 7 is directly communicated with the water outlet channel 6, and then indirectly communicated with the water inlet channel 5 through the overflow channel;

[0042] The valve seat 11 is arranged in the valve cavity 7, as shown, three grooves are arranged on it, the groove bottom of the middle groove is provided with a through hole 12, the through hole 12 can lead the valve cavity 7 inside the valve seat 11 and the connection between the valve cavity 7 and the overflow channel, the grooves on both sides are for arranging the sealing ring 13, so as to prevent the connection between the valve cavity 7 and the overflow channel from being communicated with other parts of the valve cavity 7, that is, the connection can only be communicated with the through hole 12, when the through hole 12 is blocked, the connection will be closed; Figure 5 The valve rod 8, as shown in

[0043] Figure 4 ​As shown, one end of the valve rod 8 is a spring head for mounting the spring 9, and the spring head is small at the top and large at the bottom, facilitating the spring 9 to be sleeved into the spring head, the other end is a fixed head for fixedly mounting the control device 10, and the lower part of the valve rod 8 is provided with a limiting protrusion 18 for matching the lower part of the valve seat 11, so that when the valve rod 8 moves upward to a certain position, the limiting protrusion 18 will abut against the lower part of the valve seat 11, so that the valve rod 8 cannot move upward any more, and because the upper part of the limiting protrusion 18 is designed as an inclined arc surface 19, and the lower part of the valve seat 11 is an annular surface, so when the limiting protrusion 18 moves upward and contacts the lower part of the valve seat 11, it is a point and surface contact, so it can well realize sealing, that is, the water outlet channel 6 and the inside of the valve seat 11 are sealed; the valve rod 8 is further provided with a transition surface, the transition surface includes a first surface 14, an inclined surface and a second surface 15, the diameter of the first surface 14 is larger than that of the second surface 15, and the transition surface is matched with the through hole 12 on the valve seat 11;

[0044] The spring 9 abuts against the bottom of the valve cavity 7 at one end and abuts against the lower end of the valve rod 8 at the other end, giving the valve rod 8 an acting force;

[0045] The working principle of the adjusting mechanism is that the valve rod 8 can vertically move in the valve seat 11;

[0046] When the valve rod 8 moves to the highest position, that is, the first position, at this time the limiting protrusion on the valve rod 8 abuts against the lower part of the valve seat 11 to seal, so that the water outlet channel 6 and the inside of the valve seat 11 are sealed and isolated, at the same time, at this time the first surface 14 on the valve rod 8 contacts and abuts against the through hole 12, which is equivalent to that the first surface 14 on the valve rod 8 blocks the through hole 12, at this time the inside of the valve seat 11 and the through hole 12 are also isolated and sealed, so that the water outlet channel 6, the inside of the valve seat 11 and the overflow channel are all isolated, at this time the water pressure and flow are the largest;

[0047] When the valve rod 8 moves downward to the bottom, at this time the valve rod 8 is in the second position, at this time the inclined arc surface 19 on the limiting protrusion is separated from the bottom of the valve seat 11, at this time the water outlet channel 6 and the inside of the valve seat 11 are completely communicated, and at this time the second surface 15 on the valve rod 8 is opposite to the through hole 12, because they are completely separated, so at this time the through hole 12 is also completely communicated, that is, the inside of the valve seat 11 and the overflow channel are completely communicated, at this time the water pressure and flow are the smallest;

[0048] When the valve rod 8 is between the first position and the second position, at this time the inclined arc surface 19 on the limiting protrusion is also separated from the bottom of the valve seat 11, that is, at this time the water outlet channel 6 is completely communicated with the inside of the valve seat 11, and at this time the inclined surface on the valve rod 8 is opposite to the through hole 12, so that the through hole 12 is partially communicated, and with the movement of the valve rod 8, the communication quantity is also always changing.

[0049] The control device 10 comprises a housing 21, a gear set 22, a control board 20 and a power mechanism 23 arranged in the housing 21, and a connecting part extending from the lower part of the housing 21, wherein:

[0050] The connecting part extends into the valve cavity 7 and is buckled with the valve body, and a long hole is arranged in the connecting part, the part of the long hole in the housing 21 is a threaded hole;

[0051] The gear set 22 comprises four gears, i.e. a first gear, a second gear, a third gear and a fourth gear, the four gears are sequentially engaged, the rotation shaft of the first gear is fixedly connected with the output shaft of the power mechanism 23, the power provided by the power mechanism 23 can drive the first gear to rotate, the rotation shaft of the fourth gear is threadedly connected with the threaded hole, and the lower end surface of the rotation shaft is further fixed with the upper end of the valve rod 8, so that the power mechanism 23 drives the gear set 22 to rotate, and then drives the rotation shaft of the fourth gear to move up and down in the threaded hole, and then drives the valve rod 8 to move up and down;

[0052] The power mechanism 23 is an electric motor in this embodiment;

[0053] The control board 20 is fixed in the housing 21 and is used for controlling the working of the power mechanism 23;

[0054] The working principle of the control device 10 is that the electric motor is controlled to work, the gear set 22 is driven to rotate, and then the position of the valve rod 8 moving up and down can be accurately controlled, so that the water pressure and flow of the water outlet can be controlled.

[0055] Embodiment two:

[0056] The difference from the embodiment one is that two inclined surfaces are arranged in the embodiment two, i.e. a first inclined surface 16 and a second inclined surface 17, and the inclination radian of the first inclined surface 16 is smaller than that of the second inclined surface 17, so that when the valve rod 8 is between the first position and the second position, the adjustment precision is higher, the change amount of the early-stage adjustment is smaller, and the change amount of the late-stage adjustment is larger.

[0057] Embodiment three:

[0058] The difference from the embodiment one is that two limit switches, a first limit switch 24 and a second limit switch 25, are further arranged in the shell 21 of the control device 10 in the embodiment three, both of which are electrically connected with the control board 20, and both of the first limit switch 24 and the second limit switch 25 are micro switches, mainly micro switches with elastic sheets, which are used to judge the position of the fourth gear and limit the position of the fourth gear, wherein the first limit switch 24 is used to limit the position of the fourth gear moving upward, and the second limit switch 25 is used to limit the position of the fourth gear moving downward, which is equivalent to limiting the moving range of the valve rod 8.

[0059] Embodiment four:

[0060] The difference from the embodiment one is that a wireless communication module is further arranged in the control device 10 in the embodiment four, so that a remote control switch can be arranged on the high-pressure water gun, and the wireless communication module can communicate with the remote control switch, so as to realize the remote control of the water pressure and the flow of the plunger pump, which is more convenient for adjustment.

[0061] Although the embodiments of the present application have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application.

[0062] For those skilled in the art, various changes and modifications will undoubtedly be apparent after reading the above description. Therefore, the appended claims should be considered as covering all changes and modifications within the true intent and scope of the present application. Any and all equivalent ranges and contents within the scope of the claims should be considered as still within the intent and scope of the present application.

Claims

1. A plunger pump with an electronically controlled regulating function, comprising a pump body (1) and a pump cover (2), wherein the pump cover (2) is provided with a water inlet (3) and a water outlet (4), and the pump cover (2) is provided with a water inlet channel (5) communicating with the water inlet (3) and a water outlet channel (6) communicating with the water outlet (4), characterized in that: The pump cover (2) is also provided with a regulating mechanism for regulating the outlet water pressure, the regulating mechanism comprising a valve cavity (7) communicating with the outlet water channel (6) and the inlet water channel (5), a valve stem (8) arranged in the valve cavity (7) for regulating the conduction between the valve cavity (7) and the inlet water channel (5), a spring (9), and a control device (10) for controlling the position of the valve stem (8) in the valve cavity (7), one end of the spring (9) abuts against the valve cavity (7), the other end of the spring (9) abuts against one end of the valve stem (8), and the other end of the valve stem (8) is connected to the control device (10). When the control device (10) controls the valve stem (8) to be in the first position, the connection between the valve cavity (7) and the water inlet channel (5) is closed; When the control device (10) controls the valve stem (8) to be in the second position, the connection between the valve chamber (7) and the water inlet channel (5) is fully connected; When the control device (10) controls the valve stem (8) to be between the first position and the second position, the connection between the valve cavity (7) and the water inlet channel (5) is partially conductive; The regulating mechanism further comprises a valve seat (11) arranged in the valve cavity (7), the valve seat (11) being provided with a through hole (12) communicating with the connection between the valve cavity (7) and the water inlet channel (5), and sealing rings (13) being provided on both sides of the through hole (12), the valve stem (8) extending into the valve seat (11) and sliding vertically in the valve seat (11), and the valve stem (8) being provided with a first surface (14), an inclined surface and a second surface (15), the first surface (14) and the second surface (15) being connected and transitioned via the inclined surface, When the control device (10) controls the valve stem (8) to be in a first position, the first surface (14) is opposite to the through hole (12), and the through hole (12) is blocked by the first surface (14); When the control device (10) controls the valve stem (8) to be in the second position, the second surface (15) is opposite to the through hole (12), and the through hole (12) is fully opened; When the control device (10) controls the valve stem (8) to be between the first position and the second position, the inclined surface is opposite to the through hole (12), and the through hole (12) is partially open; The inclined surface is divided into two sections, namely a first inclined surface (16) and a second inclined surface (17), the first inclined surface (16) is close to the first surface (14), the second inclined surface (17) is close to the second surface (15), and the inclination arc of the first inclined surface (16) is smaller than the inclination arc of the second inclined surface (17); The valve stem (8) is provided with a circle of limiting protrusions (18) matching the valve seat (11), and the contact surface of the limiting protrusions (18) with the bottom of the valve seat (11) is an inclined arc surface (19). When the control device (10) controls the valve stem (8) to be in the first position, the inclined arc surface (19) is sealed against the bottom of the valve seat (11), and the water outlet channel (6) and the interior of the valve seat (11) are sealed; When the control device (10) controls the valve stem (8) to be in the second position, the inclined arc surface (19) is separated from the bottom of the valve seat (11), and the water outlet channel (6) is connected to the inside of the valve seat (11); When the control device (10) controls the valve stem (8) to be between the first position and the second position, the inclined arc surface (19) is separated from the bottom of the valve seat (11), and the water outlet channel (6) is connected to the inside of the valve seat (11).

2. The plunger pump with electronically controlled regulation function according to claim 1, characterized in that: The control device (10) comprises a control panel (20), a housing (21), a gear set (22) arranged in the housing (21) and meshing with each other in sequence, and a power mechanism (23) for driving the first gear in the gear set (22) to rotate, the rotating shaft of the last gear in the gear set (22) being threadedly connected to the threaded hole in the housing (21), and the other end of the valve stem (8) being fixed to the rotating shaft of the last gear in the gear set (22), and the control panel (20) being used to control the operation of the power mechanism (23).

3. The plunger pump with electronically controlled regulation function according to claim 2, characterized in that: A limit switch for limiting the moving position of the last gear in the gear set (22) is provided in the housing (21), and the limit switch includes a first limit switch (24) for limiting the upper position and a second limit switch (25) for limiting the lower position, and the first limit switch (24) and the second limit switch (25) are electrically connected to the control panel (20).

4. The plunger pump with electronically controlled regulation function according to claim 2, characterized in that: It also includes a sensor (26) for detecting the number of rotations of the first gear, and the sensor (26) is electrically connected to the control board (20).

5. The plunger pump with electronically controlled regulation function according to claim 2, characterized in that: The control device (10) further includes a wireless communication module, and the wireless communication module is electrically connected to the control board (20).

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