CN215058109U - High-pressure plunger pump with differential pressure type overflow valve - Google Patents
High-pressure plunger pump with differential pressure type overflow valve Download PDFInfo
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- CN215058109U CN215058109U CN202121291048.4U CN202121291048U CN215058109U CN 215058109 U CN215058109 U CN 215058109U CN 202121291048 U CN202121291048 U CN 202121291048U CN 215058109 U CN215058109 U CN 215058109U
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Abstract
The utility model discloses a take high-pressure plunger pump of differential pressure formula overflow valve, include: the pump shell is provided with a water storage cavity and a water outlet; the overflow valve is arranged in the pump shell; a main valve installed in the pump housing; when the overflow valve is opened, the water flow at the water outlet is guided into the water storage cavity; when the main valve is opened, the water flow in the water storage cavity is guided to the water outlet. And a main valve is additionally arranged at the water outlet to stabilize the water pressure between the main valve and the overflow valve.
Description
Technical Field
The utility model belongs to the technical field of the plunger pump for the cleaning machine and specifically relates to a take high-pressure plunger pump of differential pressure formula overflow valve is related to.
Background
A high-pressure washer is a machine that washes the surface of an object by using a power device (a motor, a gasoline engine, or a diesel engine) to cause a high-pressure plunger pump to generate high-pressure water. It can peel off and wash away dirt to clean the surface of an object. Because the high-pressure water column is used for cleaning dirt, the high-pressure cleaning is one of scientific, economic and environment-friendly cleaning modes.
Plunger pump is the important device of distribution washing fluid in the high pressure cleaner, among the prior art, the plunger pump includes the pump case, pump case one side sets up the water inlet, the pump case opposite side sets up the delivery port, set up the plunger in pump case one side, work in order to feed through water inlet and delivery port or cut off through the plunger, because the delivery port connects the high-pressure pipe mostly, so during water inlet and delivery port intercommunication, the water pressure of delivery port department is great, when stop work operation plunger cuts off water inlet and delivery port, water pressure between plunger and the delivery port is great, influence the performance of plunger easily, and if the inside water pressure of plunger pump is too big when shutting down, can influence the life-span of inside sealing member.
The patent of the utility model discloses a take high-pressure plunger pump of overflow valve in china, the application number: CN201820896091.5 discloses a pump body, which is connected with an overflow valve, and the overflow valve is located on a channel wall between a water inlet and a water outlet provided on the pump body; the overflow valve comprises an unloading valve cap, a valve rod, a valve sleeve, a valve seat, a valve core and a valve cover, wherein the valve core is positioned in a first through hole arranged on the valve seat; one end of the valve core is abutted against the bottom of the opening on the channel wall of the pump body, and the other end of the valve core penetrates through a second through hole arranged on the valve cover and is abutted against one end of the valve rod; the utility model has the advantages that: by additionally arranging the overflow valve on the channel wall between the water inlet and the water outlet of the pump body, when the plunger pump stops working, the load of the driving motor is reduced, so that the performance of the plunger is ensured, and the service life of the plunger is prolonged.
However, although the high-pressure plunger pump structure is provided with the overflow valve, the water inlet is directly communicated with the water outlet, and the water pressure change at the water outlet is unstable, so that the overflow valve repeatedly switches the working state, and the cleaning machine is driven to repeatedly start and stop, thereby influencing the service life of the driving motor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a take high-pressure plunger pump of differential pressure formula overflow valve is provided, add the main valve in delivery port department, stabilize the water pressure between main valve and the overflow valve.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a high-pressure plunger pump with a differential pressure type overflow valve comprises:
the pump shell is provided with a water storage cavity and a water outlet;
the overflow valve is arranged in the pump shell;
a main valve installed in the pump housing; and
when the overflow valve is opened, water flow at the water outlet is guided into the water storage cavity; when the main valve is opened, the water flow in the water storage cavity is guided to the water outlet.
Compared with the prior art, the utility model has the advantages of, add the main valve in the pump case, control the rivers flow direction from the water storage chamber to the delivery port through the main valve and switch on or block. In the present invention, the external water flow enters from the water storage chamber. Specifically, the main valve can preset an opening pressure value, and when the water pressure in the water storage cavity reaches the opening pressure value preset by the main valve, the main valve can be opened. At the moment, the water flow in the water storage cavity can be led out to the water outlet through the main valve. When the water pressure in the water storage cavity is smaller than the preset opening pressure value of the main valve, the main valve is closed, and the flow direction of water from the water storage cavity to the water outlet is blocked. And at the moment, if the water pressure at the water outlet is greater than the water pressure in the water storage cavity and reaches a preset value set by the overflow valve, the overflow valve is opened to release the pressure. Specifically, when the overflow valve is opened, the water flow at the water outlet with high water pressure is guided into the water storage cavity through the overflow valve. The utility model discloses in, because be provided with the main valve, under the main valve closed condition, the water pressure of delivery port can not receive the influence in water storage chamber, and the water pressure of delivery port department is stable relatively. When the overflow valve is opened, the water pressure at the water outlet is led into the water storage cavity in a one-way mode. The overflow valve can be prevented from repeatedly switching the working state, and the influence on the service life of the driving motor caused by repeated starting and stopping of the cleaning machine switch is avoided.
The utility model discloses further preferred scheme: the overflow valve comprises a valve seat, a valve cavity is arranged in the valve seat, an overflow hole is formed in the valve seat, and the valve cavity is communicated with the water storage cavity through the overflow hole. Namely, the valve cavity of the overflow valve is always communicated with the water storage cavity, and the pressure relief of the overflow valve is equal to the pressure difference between the water pressure at the water outlet of the overflow valve and the water storage cavity. Specifically, the overflow valve is communicated with the water outlet.
Furthermore, the overflow valve comprises a valve core arranged in a valve seat, a pressure relief hole is arranged on the valve seat, one end of the pressure relief hole is communicated with the water storage cavity, and the pressure relief hole is communicated with the water outlet or the valve cavity. Specifically, in the initial state of the overflow valve, the pressure relief hole is communicated with the valve cavity, and the valve core separates the pressure relief hole from the water outlet; under the pressure relief state of the overflow valve, the valve core moves to block the pressure relief hole from the valve cavity, and the water outlet is communicated with the pressure relief hole.
When the water pressure at the water outlet is larger than the preset water pressure value of the valve cavity in the valve seat, the overflow valve enters a pressure relief state, and the valve core of the overflow valve moves to enable the pressure relief hole to be communicated with the water outlet. At the moment, water flow at the water outlet can enter the water storage cavity through the pressure relief hole, so that pressure relief at the water outlet is realized.
Furthermore, the periphery of the valve seat is provided with a groove, the groove is communicated with the water storage cavity, and the groove is communicated with the overflow hole and the pressure relief hole.
Furthermore, the longitudinal section of the valve core is in a T-shaped structure.
Furthermore, the valve core comprises a cylindrical part and a disk part, and the cylindrical part and the disk part are coaxially arranged.
Further, the sealing ring is mounted on the outer peripheral surface of the disc portion, and the sealing ring is in contact connection with the inner wall surface of the valve seat.
Furthermore, the valve seat is provided with a guide hole, the valve core is provided with a guide post, the guide post penetrates through the guide hole, and the structure of the guide post is matched with that of the guide hole.
Further, the diameter of the guide post is equal to the diameter of the guide hole.
Furthermore, the overflow valve comprises a valve rod, the valve rod is installed in the valve seat, one end of the valve rod is connected with the valve core, the other end of the valve rod is connected with the control switch, the valve core moves to drive the valve rod to move, and the moving valve rod controls the control switch to be turned on or turned off. Specifically, the overflow valve is in an initial state, namely the valve core is in a state of blocking the pressure relief hole and the water outlet, and the valve rod is also in an initial state, namely the control switch is in a closed state. When the water pressure of the water outlet is too high, the valve core is driven to move, and the water outlet is communicated with the pressure relief hole to relieve pressure, the valve core can push the valve rod to move to drive the control switch to be closed, and then the cleaning machine is stopped.
Further, a spring is arranged between the valve rod and the valve seat, and the spring provides force for returning the valve rod to the initial state. Namely, after the water pressure at the water outlet and the water pressure in the water storage cavity reach relative balance, the spring can push the valve rod to drive the valve core to return to the initial state.
Furthermore, the other end of the valve rod is connected with a power-off contact, and the power-off contact is connected with a switch. That is, in the present invention, the valve rod is connected to the switch through the power-off contact.
Furthermore, a spherical part is installed at one end of the valve rod, and the spherical part is in contact connection with the guide column.
Furthermore, the guide post, the valve core and the valve rod are coaxially arranged.
Furthermore, a fluid channel is arranged in the pump shell and is communicated with the overflow valve and the water outlet. Specifically, the fluid channel is a straight channel.
Further, the main valve is installed in the fluid passage. Namely, the main valve, the valve seat and the valve core are positioned on the same straight line.
Further, the water storage cavity is positioned at one side of the fluid channel. The water storage cavity is provided with two pipelines, wherein one pipeline is communicated with the groove, and the other pipeline is communicated with the main valve.
Furthermore, the water storage cavity is connected with five plungers, the five plungers are arranged in parallel, and the axes of the five plungers are positioned in the same plane. Specifically, the utility model discloses an use in five plunger pumps.
Drawings
The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.
Fig. 1 is a schematic structural view of the initial state of the present invention;
FIG. 2 is a schematic structural view of the pressure release state of the present invention;
fig. 3 is a schematic structural diagram of the intermediate overflow valve of the present invention.
Wherein the reference numerals are specified as follows: 1. a pump housing; 2. a water storage chamber; 3. a water outlet; 4. a main valve; 5. an overflow valve; 6. a valve seat; 7. a valve cavity; 8. an overflow aperture; 9. a valve core; 10. a seal ring; 11. a valve stem; 12. a spring; 13. a fluid channel; 14. a plunger; 15. a pressure relief vent; 16. a groove; 17. a control switch; 18. the contacts are de-energized.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1 and 2: a high-pressure plunger pump with a differential pressure type overflow valve comprises: the pump shell 1 is provided with a water storage cavity 2 and a water outlet 3; an overflow valve 5 installed in the pump housing 1; a main valve 4 installed in the pump housing 1; when the overflow valve 5 is opened, the water flow at the water outlet 3 is led into the water storage cavity 2; when the main valve 4 is opened, the water flow in the water storage cavity 2 is guided to the water outlet 3. A main valve 4 is additionally arranged in the pump shell 1, and the flow direction of water flow from the water storage cavity 2 to the water outlet 3 is controlled to be conducted or blocked through the main valve 4.
In the present invention, the external water flow enters from the water storage chamber 2. Specifically, the main valve 4 will have a preset opening pressure value, and when the water pressure in the water storage cavity 2 reaches the preset opening pressure value of the main valve 4, the main valve 4 will be opened. The water flow in the water storage cavity 2 is guided out to the water outlet 3 through the main valve 4. When the water pressure in the water storage cavity 2 is smaller than the preset opening pressure value of the main valve 4, the main valve 4 is closed, and the water flow direction from the water storage cavity 2 to the water outlet 3 is blocked. At this time, if the water pressure at the water outlet 3 is greater than the water pressure in the water storage cavity 2 and reaches a preset value set by the overflow valve 5, the overflow valve 5 is opened to release the pressure. Specifically, when the overflow valve 5 is opened, the water flow at the water outlet 3 with high water pressure is guided into the water storage cavity 2 through the overflow valve 5. In the utility model, because the main valve 4 is arranged, the water pressure of the water outlet 3 can not be influenced by the water storage cavity 2 under the closing state of the main valve 4, and the water pressure at the water outlet 3 is relatively stable. When the overflow valve 5 is opened, the water pressure of the water outlet 3 is led into the water storage cavity 2 in a one-way mode. The overflow valve 5 can be prevented from repeatedly switching the working state, and the influence on the service life of the driving motor caused by repeated start and stop of the cleaning machine switch is avoided.
The utility model discloses further preferred scheme, as shown in fig. 3: the overflow valve 5 comprises a valve seat 6, a valve cavity 7 is arranged in the valve seat 6, an overflow hole 8 is formed in the valve seat 6, and the valve cavity 7 is communicated with the water storage cavity 2 through the overflow hole 8. Namely, the valve cavity 7 of the overflow valve 5 is always communicated with the water storage cavity 2, and the pressure of the overflow valve 5 is released, or else, the pressure difference between the water pressure at the water outlet of the overflow valve 5 and the water storage cavity 2 is observed. Specifically, the overflow valve 5 is communicated with the water outlet 3.
The overflow valve 5 comprises a valve core 9 arranged in a valve seat 6, a pressure relief hole 15 is arranged on the valve seat 6, one end of the pressure relief hole 15 is communicated with the water storage cavity 2, and the pressure relief hole 15 is communicated with the water outlet 3 or the valve cavity 7. Specifically, in the initial state of the overflow valve 5, the pressure relief hole 15 is communicated with the valve cavity 7, and the valve core 9 separates the pressure relief hole 15 from the water outlet 3; under the pressure relief state of the overflow valve 5, the valve core 9 moves to block the pressure relief hole 15 from the valve cavity 7, and the water outlet 3 is communicated with the pressure relief hole 15. When the water pressure at the water outlet 3 is greater than the preset water pressure value of the valve cavity 7 in the valve seat 6, the overflow valve 5 enters a pressure relief state, and the valve core 9 of the overflow valve 5 moves to enable the pressure relief hole 15 to be communicated with the water outlet 3. At the moment, water flow at the water outlet 3 can enter the water storage cavity 2 through the pressure relief hole 15, so that pressure relief at the water outlet 3 is realized. The periphery of the valve seat 6 is provided with a groove 16, the groove 16 is communicated with the water storage cavity 2, and the groove 16 is communicated with the overflow hole 8 and the pressure relief hole 15.
The longitudinal section of the valve core 9 is in a T-shaped structure. The valve core 9 comprises a cylindrical part and a disk part, and the cylindrical part and the disk part are coaxially arranged. The seal ring 10 is mounted on the outer peripheral surface of the disk portion, and the seal ring 10 is in contact connection with the inner wall surface of the valve seat 6. The valve seat 6 is provided with a guide hole, the valve core 9 is provided with a guide post, the guide post penetrates through the guide hole, and the structure of the guide post is matched with that of the guide hole. The diameter of the guide post is equal to the aperture of the guide hole.
The overflow valve 5 comprises a valve rod 11, the valve rod 11 is installed in a valve seat 6, one end of the valve rod 11 is connected with a valve core 9, the other end of the valve rod 11 is connected with a control switch 17, the valve core 9 moves to drive the valve rod 11 to move, and the moving valve rod 11 controls the control switch 17 to be opened or closed. Specifically, the overflow valve 5 is in an initial state, that is, the valve core 9 is in a state of blocking the pressure relief hole 15 and the water outlet 3, and the valve rod 11 is also in an initial state, that is, the control switch 17 is in a closed state. When the water pressure of the water outlet 3 is too high to drive the valve core 9 to move, and the water outlet 3 is communicated with the pressure relief hole 15 to relieve the pressure, the valve core 9 can push the valve rod 11 to move to drive the control switch 17 to close, and then the cleaning machine is stopped.
One end of the valve rod 11 is provided with a spherical part, and the spherical part is in contact connection with the guide column. The guide post, the valve core 9 and the valve rod 11 are coaxially arranged. The other end of the valve rod 11 is connected with a power-off contact 18, and the power-off contact 18 is connected with a switch. That is, in the present invention, the valve rod 11 is connected to the switch through the power-off contact 18.
A spring 12 is arranged between the valve rod 11 and the valve seat 6, and the spring 12 provides force for returning the valve rod 11 to the initial state. Namely, after the water pressure at the water outlet 3 and the water pressure in the water storage cavity 2 reach relative balance, the spring 12 can push the valve rod 11 and drive the valve core 9 to return to the initial state.
A fluid channel 13 is arranged in the pump shell 1, and the fluid channel 13 is communicated with the overflow valve 5 and the water outlet 3. Specifically, the fluid channel 13 is a straight channel. The main valve 4 is mounted in the fluid channel 13. Namely, the main valve 4, the valve seat 6 and the valve core 9 are positioned on a straight line. The water holding chamber 2 is located at one side of the fluid passage 13. The reservoir 2 is provided with two lines, one of which leads to the recess 16 and the other to the main valve 4.
The water storage chamber 2 is connected with five plungers 14, the five plungers 14 are arranged in parallel, and the axes of the five plungers 14 are positioned in the same plane. Specifically, the utility model discloses an use in five plunger 14 pumps.
The above is to the utility model discloses going on the detailed introduction, having used specific individual example to right in this paper the utility model discloses a principle and implementation mode have been elucidated, and the explanation of above embodiment only is used for helping understanding the utility model discloses and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. Take high-pressure plunger pump of differential pressure formula overflow valve, its characterized in that includes:
the pump shell (1) is provided with a water storage cavity (2) and a water outlet (3);
the overflow valve (5) is arranged in the pump shell (1);
a main valve (4) installed in the pump housing (1); and
when the overflow valve (5) is opened, the water flow at the water outlet (3) is guided into the water storage cavity (2); when the main valve (4) is opened, the water flow in the water storage cavity (2) is guided to the water outlet (3).
2. The high-pressure plunger pump with the differential pressure type overflow valve according to claim 1, characterized in that the overflow valve (5) comprises a valve seat (6), a valve cavity (7) is arranged in the valve seat (6), the valve seat (6) is provided with an overflow hole (8), and the valve cavity (7) is communicated with the water storage cavity (2) through the overflow hole (8).
3. The high-pressure plunger pump with the differential pressure type overflow valve according to claim 2, characterized in that the overflow valve (5) comprises a valve core (9) arranged in a valve seat (6), the valve seat (6) is provided with a pressure relief hole (15), one end of the pressure relief hole (15) is communicated with the water storage cavity (2), and the pressure relief hole (15) is communicated with the water outlet (3) or the valve cavity (7).
4. The high-pressure plunger pump with the differential pressure type overflow valve according to claim 3 is characterized in that a groove (16) is formed in the periphery of the valve seat (6), the groove (16) is communicated with the water storage cavity (2), and the groove (16) is communicated with the overflow hole (8) and the pressure relief hole (15).
5. The high-pressure plunger pump with the differential pressure type overflow valve according to claim 1, characterized in that the overflow valve (5) comprises a valve rod (11), the valve rod (11) is installed in the valve seat (6), one end of the valve rod (11) is connected with the valve core (9), the other end of the valve rod (11) is connected with the control switch (17), the valve core (9) moves to drive the valve rod (11) to move, and the moving valve rod (11) controls the control switch (17) to open or close.
6. The high-pressure plunger pump with the differential pressure type overflow valve according to claim 5, characterized in that a spring (12) is provided between the valve stem (11) and the valve seat (6), and the spring (12) provides the valve stem (11) with a force to return to the initial state.
7. The high-pressure plunger pump with the differential pressure type overflow valve according to claim 5, characterized in that the other end of the valve rod (11) is connected with a power-off contact (18), and the power-off contact (18) is connected with a switch.
8. The high-pressure plunger pump with the differential pressure type overflow valve according to claim 1, characterized in that a fluid passage (13) is arranged in the pump shell (1), the overflow valve (5) and the water outlet (3) are communicated by the fluid passage (13), and the fluid passage (13) is a straight passage.
9. The high-pressure plunger pump with the differential pressure type relief valve according to claim 1, characterized in that the main valve (4) is installed in the fluid passage (13).
10. The high-pressure plunger pump with the differential pressure type relief valve according to claim 1, characterized in that five plungers (14) are connected to the water storage chamber (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121291048.4U CN215058109U (en) | 2021-06-09 | 2021-06-09 | High-pressure plunger pump with differential pressure type overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121291048.4U CN215058109U (en) | 2021-06-09 | 2021-06-09 | High-pressure plunger pump with differential pressure type overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215058109U true CN215058109U (en) | 2021-12-07 |
Family
ID=79205166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121291048.4U Active CN215058109U (en) | 2021-06-09 | 2021-06-09 | High-pressure plunger pump with differential pressure type overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215058109U (en) |
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2021
- 2021-06-09 CN CN202121291048.4U patent/CN215058109U/en active Active
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