Pressure regulating plunger pump controlled by water gun
阅读说明：本技术 一种水枪控制的调压柱塞泵 (Pressure regulating plunger pump controlled by water gun ) 是由 孙伟国 张时琨 董乾清 严锋杰 杨川 于 2020-07-06 设计创作，主要内容包括：本发明涉及一种水枪控制的调压柱塞泵,包括电机、柱塞泵、水枪,柱塞泵通过电机驱动运转,水枪通过高压水管与柱塞泵连接；柱塞泵的泵体上设有总进水管、回流进水管、出水管及高压水流通腔,总进水管与回流进水管之间通过循环装置与电机上的冷却循环腔连通,出水管的一端与高压水流通腔连通,另一端通过高压水管与水枪内的连通管连通；本发明具有结构紧凑、性能稳定、控制水流大小方便的优点。(The invention relates to a pressure-regulating plunger pump controlled by a water gun, which comprises a motor, a plunger pump and a water gun, wherein the plunger pump is driven by the motor to operate, and the water gun is connected with the plunger pump through a high-pressure water pipe; a main water inlet pipe, a backflow water inlet pipe, a water outlet pipe and a high-pressure water flow through cavity are arranged on a pump body of the plunger pump, the main water inlet pipe and the backflow water inlet pipe are communicated with a cooling circulation cavity on the motor through a circulating device, one end of the water outlet pipe is communicated with the high-pressure water flow through cavity, and the other end of the water outlet pipe is communicated with a communicating pipe in the water gun through a high-pressure water pipe; the invention has the advantages of compact structure, stable performance and convenient control of water flow.)
1. A pressure-regulating plunger pump controlled by a water gun comprises a motor (1), a plunger pump (2) and a water gun (3), wherein the plunger pump (2) is driven by the motor (1) to operate, and the water gun (3) is connected with the plunger pump (2) through a high-pressure water pipe (4); the method is characterized in that: a main water inlet pipe (21), a backflow water inlet pipe (22), a water outlet pipe (23) and a high-pressure water flow through cavity (24) are arranged on a pump body of the plunger pump (2), the main water inlet pipe (21) and the backflow water inlet pipe (22) are communicated with a cooling circulation cavity (5) on the motor (1) through a circulating device, one end of the water outlet pipe (23) is communicated with the high-pressure water flow through cavity (24), and the other end of the water outlet pipe is communicated with a communicating pipe (31) in the water gun (3) through a high-pressure water pipe (4); a first mounting seat (25) for mounting a main valve (6) and a second mounting seat (26) for mounting a pressure stabilizing valve (7) are arranged between the high-pressure water circulation cavity (24) and the water outlet pipe (23), the first mounting seat (25) is communicated with the second mounting seat (26), the first mounting seat (25) is communicated with the water outlet pipe (23), and the second mounting seat (26) is respectively communicated with the high-pressure water circulation cavity (24) and a working cavity (27) of the pump body; install stop valve (9) and be used for adjusting the air-vent valve (8) of rivers flow size in proper order on communicating pipe (31) in squirt (3), valve rod post (91) of stop valve (9) with trigger (32) in squirt (3) are articulated mutually.
2. A monitor-controlled pressure-regulating plunger pump as defined in claim 1, further comprising: a cavity shell (10) which is consistent with the shape of the shell is fixed on the outer surface of the shell (11) of the motor (1), and the cooling circulation cavity (5) is formed between the cavity shell (10) and the shell (11); a third mounting seat (12) is arranged between the main water inlet pipe (21) and the backflow water inlet pipe (22), and the backflow water inlet pipe (22) is communicated with a working cavity (27) of the pump body; the circulating device comprises a first connecting pipe (13) and a second connecting pipe (14), a water passing seat (15) is installed on the wall of a shell of the cavity shell (10), the first connecting pipe (13) and the second connecting pipe (14) are connected through the water passing seat (15), a fourth mounting seat (16) is installed between the first connecting pipe (13) and the second connecting pipe (14), and the fourth mounting seat (16) is communicated with the third mounting seat (12) and is fixedly mounted.
3. A monitor-controlled pressure-regulating plunger pump as claimed in claim 2, wherein: two through holes are formed in the shell wall of the cavity shell (10), the first through hole (17) is communicated with a first connecting pipe (13) connected to the water passing seat (15), and the second through hole (18) is communicated with a second connecting pipe (14) connected to the water passing seat (15); a water-stop rib (19) is arranged along the axial direction of the shell wall of the cavity shell (10), and the water-stop rib (19) is positioned between the first through hole (17) and the second through hole (18); the water-resisting rib (19) is in close contact with the outer surface of a shell (11) of the motor (1), two annular grooves (20) used for installing O-shaped sealing rings are formed in the shell wall of the cavity shell (10), and the two annular grooves (20) are respectively located on two sides of the water-resisting rib (19).
4. A monitor-controlled pressure-regulating plunger pump as defined in claim 1, further comprising: the pressure regulating valve (8) comprises a first valve body (81), a first valve core (82) and a valve rod (83), the first valve body (81) and the communication pipe (31) are integrally formed, the first valve core (82) is positioned in a valve cavity (84) of the first valve body (81), and the valve cavity (84) is communicated with the communication pipe (31); one end of the valve rod (83) is integrally formed with the first valve core (82) and is positioned in the first valve body (81); the other end of the valve rod (83) is a knob end and is positioned outside a gun shell of the water gun (3); the first valve core (82) is of a rectangular structure, the end faces matched with the valve cavity wall (84-1) are a left end face (82-1), a right end face (82-2), a front end face (82-3) and a rear end face (82-4), and the valve cavity wall (84-1) is circular.
5. A monitor-controlled pressure-regulating plunger pump as claimed in claim 4, wherein: the left end face (82-1) is integrally formed by an arc face and a concave face, and the arc face and the concave face respectively account for half of the whole left end face; the right end face (82-2) is an arc face, the distance between the right end face (82-2) and the valve cavity wall (84-1) is equal to the distance between the concave face of the left end face (82-1) and the valve cavity wall (84-1), and the arc face of the left end face (82-1) is in close contact with the valve cavity wall (84-1); the front end face (82-3) and the rear end face (82-4) are both planes, and the distance between the front end face (82-3) and the valve cavity wall (84-1) is equal to the distance between the rear end face (82-4) and the valve cavity wall (84-1).
6. A monitor-controlled pressure-regulating plunger pump as defined in claim 1, further comprising: a working cavity (27) of the pump body is internally provided with a plurality of flow passages (27-1) for installing one-way valves, a high-pressure water flow cavity (24) is internally provided with a plurality of channels (24-1) which are sequentially arranged, the channels (24-1) are sequentially communicated, and the one-way valves are arranged in the channels; the channels (24-1) in the high-pressure water flow cavity (24) are communicated with the channels (27-1) in the working cavity (27) in a one-to-one correspondence mode through the flow pipes (28).
7. A monitor-controlled pressure-regulating plunger pump as defined in claim 1, further comprising: the pipe wall of the water outlet pipe (23) is communicated with a working cavity (27) of the pump body through a transition passage, the water outlet pipe (23) is communicated with a tail end passage in the high-pressure water circulation cavity (24), an overflow valve is installed in the water outlet pipe (23), and a controller (29) for controlling the starting and stopping of the plunger pump is installed on the water outlet pipe (23); the side wall of the second mounting seat (26) is communicated with a tail end channel in the high-pressure water circulation cavity (24), and the bottom end of the second mounting seat (26) is communicated with a working cavity (27) of the pump body; the side wall of the first mounting seat (25) is communicated with the side wall of the second mounting seat (26) through a transition channel, and the bottom end of the first mounting seat (25) is communicated with the water outlet pipe (23).
8. A monitor-controlled pressure-regulating plunger pump as defined in claim 1, further comprising: the pressure maintaining valve (7) comprises a second valve body (71), a valve seat (72) and a second valve core (73), the valve seat (72) is installed in a second installation seat (26), a first water flow hole (72-1) is formed in the radial end of the valve seat (72), the second valve body (71) is fixedly installed on the second installation seat (26) in a threaded connection mode, a second water flow hole (71-1) is formed in the radial end of the second valve body (71), and a valve sleeve (74) is installed between the second valve body (71) and the valve seat (72); the second valve core (73) penetrates through the second valve body (71), the valve sleeve (74) and the valve seat (72) movably, one end of the second valve core (73) is in contact with a water return port (72-2) formed in the center of the bottom of the valve seat (72), the other end of the second valve core (73) is embedded into a spring pressing ring (75), and a spring (77) is installed between the spring pressing ring (75) and the pressure regulating knob (76).
9. A monitor-controlled pressure-regulating plunger pump as claimed in claim 8, wherein: the side wall of the second mounting seat (26) is provided with two water inlet channels, the bottom of the second mounting seat (26) is provided with a water return channel (26-1), wherein the first water inlet channel (26-2) is communicated with the first water flow hole (72-1), the first water inlet channel (26-2) is communicated with the side wall of the first mounting seat (25), the second water inlet channel (26-3) is communicated with the second water flow hole (71-1), the second water inlet channel (26-3) is communicated with the high-pressure water flow cavity (24), the water return channel (26-1) is communicated with the water return port (72-2), and the water return channel (26-1) is communicated with the working cavity (27) of the pump body.
10. A monitor-controlled pressure-regulating plunger pump as claimed in claim 8, wherein: the outer diameter of the middle core body (73-1) of the second valve core (73) is larger than the outer diameters of the two end core bodies (73-2), the middle core body (73-1) is located in the second valve body (71), one end of each of the two end core bodies (73-2) is fixed with the spring pressing ring (75), the other end of each of the two end core bodies is in contact with the water return port (72-2), and the end face of each end is arc-shaped.
Technical Field
The invention belongs to the technical field of plunger pumps, and particularly relates to a water gun controlled pressure regulating plunger pump.
Background
The high-pressure cleaning machine is a machine which enables a high-pressure plunger pump to generate high-pressure water to wash the surface of an object through a power device (a motor, a gasoline engine or a diesel engine), and the washing of the surface of the object is realized through a water gun connected with the high-pressure plunger pump. The power device, the high-pressure plunger pump and the water gun in the existing high-pressure cleaning machine have the following defects:
1. the motor in the existing power device generally adopts the fan blades to dissipate heat basically in the prior art, and the fan blades are adopted to dissipate heat, so that the heat dissipation is slow and the noise is high; the existing water-cooled motors also have some water-cooled motors, but the existing water-cooled motors have more complex structures, slower operation of cooling systems and simpler functions;
2. the water flow size and speed of the existing water gun are generally controlled by a pressure regulating valve on a high-pressure plunger pump, so that the water gun is inconvenient to regulate in the process of washing the surface of an object, and the water flow size cannot be regulated in the washing process in time;
3. the high-pressure plunger pump used in the high-pressure cleaning machine on the market is an important device for distributing cleaning fluid, and the performance and the pressure stabilizing effect of the whole high-pressure cleaning machine can be influenced by the position distribution of each valve in the pump body and the reasonability of the structural design of the pump body.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the water gun controlled pressure regulating plunger pump which is compact in structure, stable in performance and convenient in water flow control.
The pressure-regulating plunger pump controlled by the water gun comprises a motor, a plunger pump and the water gun, wherein the plunger pump is driven by the motor to operate, and the water gun is connected with the plunger pump through a high-pressure water pipe; a main water inlet pipe, a backflow water inlet pipe, a water outlet pipe and a high-pressure water flow through cavity are arranged on a pump body of the plunger pump, the main water inlet pipe and the backflow water inlet pipe are communicated with a cooling circulation cavity on the motor through a circulating device, one end of the water outlet pipe is communicated with the high-pressure water flow through cavity, and the other end of the water outlet pipe is communicated with a communicating pipe in the water gun through a high-pressure water pipe; a first mounting seat for mounting a main valve and a second mounting seat for mounting a pressure stabilizing valve are arranged between the high-pressure water circulation cavity and the water outlet pipe, the first mounting seat is communicated with the second mounting seat, the first mounting seat is communicated with the water outlet pipe, and the second mounting seat is respectively communicated with the high-pressure water circulation cavity and the working cavity of the pump body; the water gun is characterized in that a stop valve and a pressure regulating valve for regulating the flow rate of water flow are sequentially arranged on a communicating pipe in the water gun, and a valve rod column of the stop valve is hinged with a trigger in the water gun.
Preferably, a cavity shell body with the shape consistent with that of the shell body is fixed on the outer surface of the shell body of the motor, and the cooling circulation cavity is formed between the cavity shell body and the shell body; a third mounting seat is arranged between the main water inlet pipe and the backflow water inlet pipe, and the backflow water inlet pipe is communicated with the working cavity of the pump body; the circulating device comprises a first connecting pipe and a second connecting pipe, a water passing seat is installed on the wall of the cavity shell and connected with the first connecting pipe and the second connecting pipe through the water passing seat, a fourth mounting seat is installed between the first connecting pipe and the second connecting pipe, and the fourth mounting seat is communicated with and fixedly mounted on the third mounting seat.
Preferably, two through holes are formed in the shell wall of the cavity shell, the first through hole is communicated with a first connecting pipe connected to the water passing seat, and the second through hole is communicated with a second connecting pipe connected to the water passing seat; a water-stop rib is arranged along the axial direction of the shell wall of the cavity shell and is positioned between the first through hole and the second through hole; the water-proof rib is in close contact with the outer surface of the shell of the motor, two annular grooves for installing O-shaped sealing rings are formed in the shell wall of the cavity shell, and the two annular grooves are respectively located on two sides of the water-proof rib.
Preferably, the pressure regulating valve comprises a first valve body, a first valve core and a valve rod, the first valve body and the communicating pipe are integrally formed, the first valve core is positioned in a valve cavity of the first valve body, and the valve cavity is communicated with the communicating pipe; one end of the valve rod is integrally formed with the first valve core and is positioned in the first valve body; the other end of the valve rod is a knob end and is positioned outside a gun shell of the water gun; the first valve core is of a rectangular structure, the end faces matched with the valve cavity wall are respectively a left end face, a right end face, a front end face and a rear end face, and the valve cavity wall is circular.
Preferably, the left end surface is integrally formed by an arc surface and a concave surface, and the arc surface and the concave surface respectively account for half of the whole left end surface; the right end face is an arc face, the distance between the right end face and the wall of the valve cavity is equal to the distance between the concave face of the left end face and the wall of the valve cavity, and the arc face of the left end face is in close contact with the wall of the valve cavity; the front end face and the rear end face are both planes, and the distance between the front end face and the valve cavity wall is equal to the distance between the rear end face and the valve cavity wall.
Preferably, a plurality of flow passages for installing the one-way valves are arranged in the working cavity of the pump body, a plurality of channels which are sequentially arranged are arranged in the high-pressure water flow cavity, the channels are sequentially communicated, and the one-way valves are arranged in the channels; the plurality of channels in the high-pressure water circulation cavity are communicated with the plurality of flow channels in the working cavity in a one-to-one correspondence mode through circulation pipes.
Preferably, the pipe wall of the water outlet pipe is communicated with the working cavity of the pump body through a transition passage, the water outlet pipe is communicated with a tail end passage in the high-pressure water circulation cavity, an overflow valve is installed in the water outlet pipe, and a controller for controlling the start and stop of the plunger pump is installed on the water outlet pipe; the side wall of the second mounting seat is communicated with a tail end channel in the high-pressure water circulation cavity, and the bottom end of the second mounting seat is communicated with the working cavity of the pump body; the side wall of the first mounting seat is communicated with the side wall of the second mounting seat through a transition channel, and the bottom end of the first mounting seat is communicated with the water outlet pipe.
Preferably, the pressure stabilizing valve comprises a second valve body, a valve seat and a second valve core, the valve seat is mounted in a second mounting seat, a first water flow hole is formed in the radial end of the valve seat, the second valve body is fixedly mounted on the second mounting seat in a threaded connection mode, a second water flow hole is formed in the radial end of the second valve body, and a valve sleeve is mounted between the second valve body and the valve seat; the second valve core is inserted and moved on the second valve body, the valve sleeve and the valve seat, one end of the second valve core is in contact with a water return port arranged in the center of the bottom of the valve seat, the other end of the second valve core is embedded into a spring pressing ring, and a spring is arranged between the spring pressing ring and the pressure regulating knob.
Preferably, two water inlet channels are arranged on the side wall of the second mounting seat, a water return channel is arranged at the bottom of the second mounting seat, the first water inlet channel is communicated with the first water flow hole, the first water inlet channel is communicated with the side wall of the first mounting seat, the second water inlet channel is communicated with the second water flow hole, the second water inlet channel is communicated with the high-pressure water flow through cavity, the water return channel is communicated with the water return port, and the water return channel is communicated with the working cavity of the pump body.
Preferably, the second valve core is formed by fixing one end of the middle core body with the spring pressing ring and the other end with the water return port, wherein the outer diameter of the middle core body is larger than that of the two end core bodies, the middle core body is positioned in the second valve body, the end face of the end is arc-shaped, and the end face of the end is in contact with the water return port.
The invention has the beneficial effects that: 1. through directly setting up the air-vent valve in the squirt, like this, the squirt is washing the in-process to the object surface, can compare with prior art through the size of the timely regulation rivers of air-vent valve and the velocity of flow: has the advantages of compact structure, convenient pressure regulation and capability of regulating the pressure by a water gun at any time; 2. the water-cooled motor is matched with the plunger pump for use, so that not only is water supplied to the plunger pump achieved, but also the effect of rapid and stable cooling of the motor can be achieved, and the plunger pump has the advantages of better operation stability, longer service life and convenience in use; meanwhile, the water-cooled motor and the plunger pump are installed in a modularized mode, so that the installation and the disassembly are more convenient, and the main water inlet pipe is positioned at the end of the plunger pump, so that the size is more compact, and the cooling effect of the motor is better; 3. through the novel structural design of the pump body and the reasonable arrangement of the position arrangement of parts required on the pump body, the high-pressure cleaning machine has the advantages of compact size, more stable performance and convenient maintenance in the use process; the pressure stabilizing valve mounting seat is additionally arranged on the pump body, so that the pressure stabilizing effect of the whole pump body is better; 4. through adopting the surge damping valve of this design to use with the pump body is supporting, in the use, has that sealing performance is better, the structure is more compact, the performance is more stable, advantage with low costs.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic perspective view of the present invention.
Fig. 3 is a schematic view of the structure of the cooling circulation chamber of the present invention.
Fig. 4 is a first pump body structure diagram of the present invention.
Fig. 5 is a second schematic diagram of the pump structure of the present invention.
Fig. 6 is a third schematic diagram of the pump body structure of the present invention.
Fig. 7 is a schematic view of the pressure maintaining valve of the present invention.
Fig. 8 is a schematic front sectional view of the communication pipe and the pressure regulating valve according to the present invention.
FIG. 9 is a first schematic view of the state of water flow through the pressure regulating valve according to the present invention.
FIG. 10 is a second schematic view of the state of water flow through the pressure regulating valve according to the present invention.
FIG. 11 is a third schematic view showing the state of the water flow rate through the pressure regulating valve according to the present invention.
The reference numbers in the drawings are respectively: 1. a motor; 2. a plunger pump; 3. a water gun; 4. a high pressure water pipe; 5. a cooling circulation chamber; 6. a main valve; 7. a pressure maintaining valve; 8. a pressure regulating valve; 9. a stop valve; 10. a chamber housing; 11. a housing; 12. a third mounting seat; 13. a first connecting pipe; 14. a second connecting pipe; 15. a water-passing seat; 16. a fourth mounting seat; 17. a first through hole; 18. a second through hole; 19. water-resisting ribs; 20. an annular groove; 21. a main water inlet pipe; 22. a backflow water inlet pipe; 23. a water outlet pipe; 24. a high-pressure water flow cavity; 25. a first mounting seat; 26. a second mounting seat; 27. a working chamber; 28. a flow-through tube; 29. a controller; 31. a communicating pipe; 32. a trigger; 24-1, a channel; 26-1, a water return channel; 26-2, a first water inlet channel; 26-3, a second water inlet channel; 27-1, a flow channel; 71. a second valve body; 72. a valve seat; 73. a second valve core; 74. a valve housing; 75. pressing a ring by a spring; 76. a pressure regulating knob; 77. a spring; 71-1, a second water flow hole; 72-1, a first water flow hole; 72-2, a water return port; 73-1, an intermediate core; 73-2, two end cores; 81. a first valve body; 82. a first valve spool; 83. a valve stem; 84. a valve cavity; 82-1, left end face; 82-2 and a right end face; 82-3, front end face; 82-4, rear end face; 84-1, valve chamber wall; 91. a valve stem string.
Detailed Description
The invention will be described in detail below with reference to the following drawings: the water gun comprises a motor 1, a plunger pump 2 and a water gun 3, wherein the plunger pump 2 is driven by the motor 1 to operate, and the water gun 3 is connected with the plunger pump 2 through a high-pressure water pipe 4; a main water inlet pipe 21, a backflow water inlet pipe 22, a water outlet pipe 23 and a high-pressure water flow through cavity 24 are arranged on the pump body of the plunger pump 2, the main water inlet pipe 21 and the backflow water inlet pipe 22 are communicated with a cooling circulation cavity 5 on the motor 1 through a circulating device, one end of the water outlet pipe 23 is communicated with the high-pressure water flow through cavity 24, and the other end of the water outlet pipe is communicated with a communicating pipe 31 in the water gun 3 through a high-pressure water pipe 4; a first mounting seat 25 for mounting the main valve 6 and a second mounting seat 26 for mounting the pressure stabilizing valve 7 are arranged between the high-pressure water flow through cavity 24 and the water outlet pipe 23, the first mounting seat 25 is communicated with the second mounting seat 26, the first mounting seat 25 is communicated with the water outlet pipe 23, and the second mounting seat 26 is respectively communicated with the high-pressure water flow through cavity 24 and a working cavity 27 of the pump body; a stop valve 9 and a pressure regulating valve 8 for regulating the water flow are sequentially arranged on a communicating pipe 31 in the water gun 3, and a valve rod column 91 of the stop valve 9 is hinged with a trigger 32 in the water gun 3. The working principle is as follows:
the high-pressure cleaning machine leads water into a first connecting pipe 13 through a main water inlet pipe 21 arranged on the pump body, then enters a first through hole 17 of the cavity shell 10 through a water passing seat 15, flows into the cavity shell 10, flows for a circle along the cooling circulation cavity 5 until flowing into a second through hole 18 of the cavity shell 10, then enters a second connecting pipe 14 through the water passing seat 15, flows through a backflow water inlet pipe 22 along the second connecting pipe 14, and flows into a working cavity 27 of the pump body through the backflow water inlet pipe 22; then the water in the working chamber 27 is respectively introduced into the flow passages 27-1 and is made to generate high-pressure water by the work of the plunger pump and the high-pressure water flows into the passage 24-1 of the high-pressure water flow chamber 24 through the respective flow pipes 28, the high-pressure water flows into the water outlet pipe 23 through the end passage, and is introduced into the high-pressure water pipe 4 through the water outlet pipe 23 and directly introduced into the communicating pipe 31 in the water gun 3, and the water flow of the communicating pipe 31 in the water gun 3 is controlled by the adjustment of the pressure regulating valve 8.
As shown in fig. 1 and 3, a
In order to separate the water flow flowing into the cooling circulation chamber 5, two through holes are provided in the housing wall of the
The water-cooled motor is matched with the plunger pump for use, so that not only is water supplied to the plunger pump achieved, but also the effect of rapid and stable cooling of the motor can be achieved, and the plunger pump has the advantages of better operation stability, longer service life and convenience in use; simultaneously, through the modularization mounting means between water-cooled motor and the plunger pump for it is more convenient that the installation is dismantled, and total inlet tube is located the plunger pump end moreover, and the volume is more compact, makes the cooling effect of motor better.
As shown in fig. 2 and 8, the pressure regulating valve 8 comprises a first valve body 81, a first valve core 82 and a valve rod 83, wherein the first valve body 81 and the communicating
The left end surface 82-1 is integrally formed by an arc surface and a concave surface, and the arc surface and the concave surface respectively account for half of the whole left end surface; the right end face 82-2 is an arc face, the distance between the right end face 82-2 and the valve cavity wall 84-1 is equal to the distance between the concave face of the left end face 82-1 and the valve cavity wall 84-1, and the arc face of the left end face 82-1 is tightly contacted with the valve cavity wall 84-1; the front end 82-3 and the rear end 82-4 are both planar, and the distance between the front end 82-3 and the valve chamber wall 84-1 is equal to the distance between the rear end 82-4 and the valve chamber wall 84-1. The working principle is as follows: by the counter-clockwise rotation of the valve core,
as shown in fig. 9, the water flow rate is the maximum, and at this time, the front end surface 82-3 and the rear end surface 82-4 are parallel to the water flow direction of the communicating
As shown in fig. 10, the water flow is reduced, at this time, the front end surface 82-3 and the rear end surface 82-4 form oblique angles with the water flow direction of the
As shown in fig. 11, the water flow rate is the minimum, at this time, the front end surface 82-3 and the rear end surface 82-4 are perpendicular to the water flow direction of the communicating
Through directly setting up the air-vent valve in the squirt, like this, the squirt is washing the in-process to the object surface, can compare with prior art through the size of the timely regulation rivers of air-vent valve and the velocity of flow: has the advantages of compact structure, convenient pressure regulation and capability of regulating the pressure through the water gun at any time.
As shown in fig. 4 to 6, a working chamber 27 of the pump body is internally provided with a plurality of flow passages 27-1 for installing the one-way valves, in order to make the structure of the high-pressure water flow chamber more compact and the spatial position distribution more reasonable, the high-pressure water flow chamber 24 is internally provided with a plurality of channels 24-1 which are arranged in sequence, and the channels 24-1 are communicated in sequence and the one-way valves are installed in the channels; the plurality of channels 24-1 in the high-pressure water flow-through cavity 24 are communicated with the plurality of flow channels 27-1 in the working cavity 27 in a one-to-one correspondence mode through the flow pipes 28.
The pipe wall of the water outlet pipe 23 is communicated with a working cavity 27 of the pump body through a transition channel, the water outlet pipe 23 is communicated with a tail end channel in the high-pressure water flowing cavity 24, an overflow valve is installed in the water outlet pipe 23, and a controller 29 for controlling the starting and stopping of the plunger pump is installed on the water outlet pipe 23; the side wall of the second mounting seat 26 is communicated with a tail end channel in the high-pressure water flowing cavity 24, the bottom end of the second mounting seat 26 is communicated with the working cavity 27 of the pump body, the structure is more compact, the overall performance of the pump body is better, and the pressure stabilizing effect of the pressure stabilizing valve is better; the side wall of the first mounting seat 25 is communicated with the side wall of the second mounting seat 26 through a transition channel, and the bottom end of the first mounting seat 25 is communicated with the water outlet pipe 23; the structure distribution ensures that the main valve can timely protect the service performance of the pressure stabilizing valve in the control process, and the performance of the whole pump body is better.
Through the novel structural design of the pump body and the reasonable arrangement of the position arrangement of parts required on the pump body, the high-pressure cleaning machine has the advantages of compact size, more stable performance and convenient maintenance in the use process; and a pressure stabilizing valve mounting seat is additionally arranged on the pump body, so that the pressure stabilizing effect of the whole pump body is better.
As shown in fig. 5 and 7, the pressure maintaining valve 7 includes a second valve body 71, a valve seat 72, and a second valve core 73, the valve seat 72 is installed in the second installation seat 26, a radial end of the valve seat 72 is provided with a first water flow hole 72-1, the second valve body 71 is fixedly installed on the second installation seat 26 in a threaded connection manner, a radial end of the second valve body 71 is provided with a second water flow hole 71-1, and a valve sleeve 74 is installed between the second valve body 71 and the valve seat 72; the second valve core 73 is inserted and moved on the second valve body 71, the valve sleeve 74 and the valve seat 72, one end of the second valve core 73 is in contact with a water return port 72-2 arranged at the center of the bottom of the valve seat 72, the other end of the second valve core 73 is embedded in a spring pressing ring 75, a spring 77 is arranged between the spring pressing ring 75 and the pressure regulating knob 76, and the pressure regulating knob 26 is fixed with the valve body 21 in a threaded screwing mode. The working principle is as follows:
when the high-pressure water gun shuts off a gun or other water supply is cut off, the pressure in the pump rises at the moment, under the action of water pressure, high-pressure water in the pump enters the second water flow hole 71-1 in the valve body 71 through the second water inlet channel 26-3 on the pump body, the second valve core 73 moves upwards under the action of overcoming the spring force, the second valve core 73 is separated from the water return port 72-2 at the moment, the high-pressure water in the high-pressure water gun section enters the first water flow hole 72-1 in the valve seat 72 through the first water inlet channel 26-2 and returns water through the water return port 72-2, the pressure of the pump body is reduced, and the second valve core reaches a new balance state; when the high-pressure water gun is opened, the second valve spool 73 is reset, at the moment, the second valve spool 73 is abutted against the water return port 72-2, and the high-pressure plunger pump is restored to work.
The side wall of the second mounting seat 26 is provided with two water inlet channels, the bottom of the second mounting seat 26 is provided with a water return channel 26-1, wherein the first water inlet channel 26-2 is communicated with the first water flow hole 72-1, the first water inlet channel 26-2 is communicated with the side wall of the first mounting seat 25, the second water inlet channel 26-3 is communicated with the second water flow hole 71-1, the second water inlet channel 26-3 is communicated with the high-pressure water flow cavity 24, the water return channel 26-1 is communicated with the water return port 72-2, and the water return channel 26-1 is communicated with the working cavity 27 of the pump body.
In order to enable the second valve core 73 to move up and down smoothly and enable the structure of the whole pressure stabilizing valve to be more compact, the second valve core 73 is that the outer diameter of the middle core 73-1 is larger than the outer diameters of the two end cores 73-2, the middle core 73-1 is positioned in the second valve body 71, one end of each of the two end cores 73-2 is fixed with the spring pressing ring 75, the other end of each of the two end cores is in contact with the water return port 72-2, the end face of each end is arc-shaped, and the end face of each arc-shaped end is in contact with the corner end of the water return port 72-2, so that the.
Through adopting the surge damping valve of this design to use with the pump body is supporting, in the use, has that sealing performance is better, the structure is more compact, the performance is more stable, advantage with low costs.
The present invention is not limited to the above embodiments, and any changes in the shape or material composition, or any changes in the structural design provided by the present invention, are all modifications of the present invention, and should be considered to be within the scope of the present invention.
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