Plunger pump and working method thereof

Abstract

The present invention belongs to the technical field of engineering components, and specifically relates to a lubrication pump, and in particular to a plunger pump and a working method thereof, which comprises: a plurality of oil inlet channels are opened in a block, a switch mechanism is arranged in the oil inlet channel, and a pushing mechanism is suitable for driving the switch mechanism to move and open or close the oil inlet channel; wherein the switch mechanism comprises: a first sphere and a reset assembly; a truncated cone area is arranged in the oil inlet channel, and the end with a larger cross-sectional area of ​​the truncated cone area is close to the oil inlet of the oil inlet channel; the reset assembly is arranged in the truncated cone area, a part of the first sphere is located in the truncated cone area, and the first sphere is in contact with the reset assembly; the reset assembly presses the first sphere to close the oil inlet channel, and the first sphere squeezes the reset assembly to rotate in a direction away from the central axis of the truncated cone area to open the oil inlet channel; after the oil is drawn into the oil inlet channel, when the oil needs to be output, the first sphere closes the oil inlet channel at the first time through the reset assembly to prevent the oil from flowing out through the oil inlet channel.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering components, and specifically relates to a lubrication pump, and in particular to a plunger pump and a working method thereof. Background Art

[0002] The plunger pump can draw oil and other liquids into the plunger pump and then output them from the plunger pump through the repeated movement of the piston. In the related technology, the movement of the piston drives the movement of the ball, and then the oil inlet channel is opened and closed by the ball. However, when the movement of the piston drives the ball to close the oil inlet channel, the oil inlet channel cannot be closed immediately. That is, it takes a certain amount of time for the piston to squeeze the lubricating oil so that the ball presses against one end of the oil inlet channel. At this time, part of the lubricating oil drawn into the plunger pump will be squeezed out of the oil inlet channel.

[0003] Therefore, due to the technical problem that the oil inlet channel cannot be closed in time during the oil discharge process, resulting in partial oil outflow, it is necessary to design a new plunger pump and its working method.

[0004] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0005] The embodiments of the present disclosure at least provide a plunger pump and a working method thereof.

[0006] In a first aspect, an embodiment of the present disclosure provides a plunger pump, comprising:

[0007] Block and propulsion mechanism;

[0008] A plurality of oil inlet channels are provided in the block, a switch mechanism is provided in the oil inlet channels, and the pushing mechanism is suitable for driving the switch mechanism to move so as to open or close the oil inlet channels; wherein

[0009] The switch mechanism comprises: a first sphere and a reset assembly;

[0010] A truncated cone region is provided in the oil inlet flow channel, and an end of the truncated cone region with a larger cross-sectional area is close to the oil inlet of the oil inlet flow channel;

[0011] The reset component is arranged in the truncated cone area, a portion of the first sphere is located in the truncated cone area, and the first sphere is in contact with the reset component;

[0012] The reset component presses against the first sphere to close the oil inlet passage, and the first sphere squeezes the reset component and rotates in a direction away from the central axis of the truncated cone area to open the oil inlet passage.

[0013] In an optional embodiment, the reset assembly includes: a rotating block;

[0014] The rotating block is rotatably connected to the inner wall of the truncated cone area, and a torsion spring is connected between the rotating block and the inner wall of the truncated cone area;

[0015] Part of the rotating block is located in the truncated cone area, and the remaining part is located in the block body.

[0016] In an optional embodiment, a chamber is opened in the block body, the remaining part of the rotating block is located in the chamber, and the chamber is connected to the frustum area, so that the rotating block can be rotated out of or into the chamber.

[0017] In an optional embodiment, a filter screen is provided in the oil inlet flow channel, and the filter screen is farther away from the oil inlet of the oil inlet flow channel than the frustum area;

[0018] The outer wall of the filter screen is connected to the sliding block, the sliding block passes through the inner wall of the oil inlet channel and extends into the chamber, and the sliding block is slidably connected to the inner wall of the oil inlet channel.

[0019] In an optional embodiment, a convex plate is provided on the sliding block, the convex plate corresponds to the rotating block, and the rotating block contacts the corresponding convex plate when rotating into the chamber;

[0020] A pair of limit plates are arranged in the chamber, the limit plates are arranged up and down, and the sliding block is arranged between the limit plates;

[0021] The sliding block is slidably connected to the limiting plate.

[0022] In an optional embodiment, an oil outlet channel is provided in the block, and the oil outlet channel is connected to the oil inlet channel;

[0023] The position where the oil outlet channel is connected to the oil inlet channel is farther away from the first sphere than the filter screen.

[0024] In an optional embodiment, an oil outlet is provided on one end surface of the block, and the oil outlet is communicated with the oil outlet channel;

[0025] A second ball is arranged in the oil outlet channel, and the second ball is suitable for opening or closing the corresponding oil outlet channel.

[0026] In an optional embodiment, the pushing mechanism includes: a piston rod;

[0027] A groove corresponding to the oil inlet channel is formed on the other end surface of the block, and the groove is communicated with the corresponding oil inlet channel;

[0028] A piston rod is inserted into the groove, and the piston rod extends into the corresponding oil inlet channel;

[0029] A third sphere is rotatably arranged on one end of the piston rod away from the first sphere;

[0030] A ring body is arranged on the outer wall of the piston rod, and the ring body is arranged close to the third sphere;

[0031] A spring is sleeved on the piston rod;

[0032] The spring is located between the ring body and the inner top surface of the groove.

[0033] In an optional embodiment, the plunger pump further includes: a housing;

[0034] The block is arranged in the housing;

[0035] A plurality of through holes are formed on the outer wall of the shell, and the through holes correspond to the oil inlet of the oil inlet channel.

[0036] In an optional embodiment, a rotating column is rotatably arranged in the housing;

[0037] A surface of the rotating column close to the third sphere is an inclined surface.

[0038] In a second aspect, the present disclosure also provides a working method using the above plunger pump, including:

[0039] The reset component presses against the first sphere to close the oil inlet passage, and the first sphere squeezes the reset component to rotate in a direction away from the central axis of the truncated cone area to open the oil inlet passage.

[0040] The beneficial effects of the present invention are that the plunger pump and its working method include a block and a pushing mechanism; a plurality of oil inlet channels are provided in the block, a switch mechanism is provided in the oil inlet channel, and the pushing mechanism is suitable for driving the switch mechanism to move so as to open or close the oil inlet channel; wherein the switch mechanism includes: a first sphere and a reset assembly; a truncated cone area is provided in the oil inlet channel, and the end of the truncated cone area with a larger cross-sectional area is close to the oil inlet of the oil inlet channel; the reset assembly is provided in the truncated cone area, a part of the first sphere is located in the truncated cone area, and the first sphere is in contact with the reset assembly; the reset assembly presses the first sphere to close the oil inlet channel, and the first sphere squeezes the reset assembly to rotate in a direction away from the central axis of the truncated cone area to open the oil inlet channel; it is achieved that after the oil is drawn into the oil inlet channel, when the oil needs to be output, the first sphere closes the oil inlet channel at the first time through the reset assembly to prevent the oil from flowing out through the oil inlet channel.

[0041] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 A schematic diagram of the structure of a plunger pump provided in an embodiment of the present disclosure;

[0045] Figure 2 A schematic diagram of the structure of a switch mechanism provided in an embodiment of the present disclosure;

[0046] Figure 3 A cross-sectional view of a switch mechanism provided in an embodiment of the present disclosure;

[0047] Figure 4 A cross-sectional view of a plunger pump provided in an embodiment of the present disclosure.

[0048] In the figure:

[0049] 1 block, 11 oil inlet channel, 111 first sphere, 112 truncated cone area, 12 rotating block, 13 chamber, 14 sliding block, 141 convex plate, 142 limit plate, 143 filter screen, 15 oil outlet channel, 151 second sphere, 16 oil outlet, 161 groove;

[0050] 2 piston rod, 21 ring body, 22 spring, 23 third sphere;

[0051] 3 housing, 31 through hole;

[0052] 4 Rotate the column. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0055] After research, it was found that the disadvantage of the prior art is that in the traditional plunger pump, the oil inlet channel is closed or opened by a ball. The ball has a movable space. When the piston moves outward to extract oil, the ball will move due to the negative pressure generated by the movement of the piston to open the oil inlet channel, and the oil is drawn into the oil inlet channel. After the extraction is completed, the piston moves inward to push the oil into the oil outlet channel to output the oil. When pushing the oil, the oil will first push the ball to move to close the oil inlet channel. In this process, part of the oil will pass over the ball and flow out through the oil inlet channel before the ball closes the oil inlet channel, resulting in a decrease in oil output.

[0056] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0057] like Figure 1As shown, at least one disclosed embodiment provides a plunger pump, comprising: a block 1 and a pushing mechanism; a plurality of oil inlet channels 11 are provided in the block 1, a switch mechanism is provided in the oil inlet channel 11, and the pushing mechanism is suitable for driving the switch mechanism to move so as to open or close the oil inlet channel 11; wherein the switch mechanism comprises: a first sphere 111 and a reset assembly; a truncated cone area 112 is provided in the oil inlet channel 11, and an end of the truncated cone area 112 with a larger cross-sectional area is close to the oil inlet of the oil inlet channel 11; the reset assembly is provided in the truncated cone area 112, a portion of the first sphere 111 is located in the truncated cone area 112, and the first The sphere 111 contacts the reset component; the reset component presses the first sphere 111 to close the oil inlet channel 11, and the first sphere 111 squeezes the reset component and rotates in a direction away from the central axis of the truncated cone area 112 to open the oil inlet channel 11; after the oil is drawn into the oil inlet channel 11, when the oil needs to be discharged, the first sphere 111 closes the oil inlet channel 11 at the first time through the reset component to prevent the oil from flowing out through the oil inlet channel 11; when the oil needs to be discharged, the reset component can be reset to make the first sphere 111 close the oil inlet channel 11 to prevent the oil from flowing out through the oil inlet channel 11 over the first sphere 111.

[0058] like Figure 2 and Figure 3 As shown, in an optional embodiment, the reset component includes: a rotating block 12; the rotating block 12 is rotatably connected to the inner wall of the truncated cone area 112, and a torsion spring is connected between the rotating block 12 and the inner wall of the truncated cone area 112; part of the rotating block 12 is located in the truncated cone area 112, and the remaining part is located in the block 1; the diameter of the part of the oil inlet channel 11 that is connected to the truncated cone area 112 is smaller than the diameter of the first sphere 111; in the initial state, the rotating block 12 presses the first sphere 111 tightly through the torsion spring, so that the first sphere 111 blocks the oil inlet channel 11, and when it is necessary to extract oil, the piston rod 2 moves away from the truncated cone area 112, so that the truncated cone area The space between 112 and the piston column increases to form negative pressure. At this time, the second sphere 151 closes the oil outlet channel 15, and the negative pressure in the oil inlet channel 11 causes the first sphere 111 to move toward the piston rod 2. The first sphere 111 squeezes the rotating block 12 to rotate away from the central axis of the conical area 112. At this time, the oil inlet channel 11 is opened, and the oil outside the plunger pump is drawn into the area between the first sphere 111 and the piston column through the oil inlet channel 11. The rotating block 12 will not completely rotate into the chamber 13, that is, a part of the rotating block 12 will always protrude from the conical area 112, so that the gap between the first sphere 111 and the inner wall of the conical area 112 is convenient for oil to flow through.

[0059] In an optional embodiment, a chamber 13 is opened in the block 1, and the remaining part of the rotating block 12 is located in the chamber 13. The chamber 13 is connected to the conical area 112, so that the rotating block 12 can be rotated out of or into the chamber 13; the chamber 13 facilitates the rotation of the rotating block 12, and there is a gap between the position where the chamber 13 is connected to the conical area 112 and the rotating block 12.

[0060] In an optional embodiment, a filter 143 is provided in the oil inlet channel 11, and the filter 143 is farther away from the oil inlet of the oil inlet channel 11 than the conical area 112; the outer wall of the filter 143 is connected to the sliding block 14, and the sliding block 14 passes through the inner wall of the oil inlet channel 11 and extends into the chamber 13, and the sliding block 14 is slidably connected to the inner wall of the oil inlet channel 11; when the rotating block 12 rotates away from the central axis of the conical area 112, that is, when the oil is extracted, the rotating block 12 will drive the sliding block 14 to move away from the central axis of the conical area 112 to tighten the filter 143, so that the filter 143 is tensioned to ensure that the oil is filtered by the filter 143, and the filtering effect of the oil is ensured by tensioning the filter 143.

[0061] In an optional embodiment, a convex plate 141 is provided on the sliding block 14, and the convex plate 141 corresponds to the rotating block 12. When the rotating block 12 rotates into the chamber 13, it contacts the corresponding convex plate 141; a pair of limit plates 142 are provided in the chamber 13, and the limit plates 142 are arranged up and down, and the sliding block 14 is arranged between the limit plates 142; the sliding block 14 is slidably connected with the limit plates 142; when the rotating block 12 rotates in a direction away from the central axis of the truncated cone area 112, it contacts the convex plate 141, and the sliding block 14 is driven to move by the convex plate 141, and the moving direction of the moving block is limited by the limit plate 142 during the movement of the sliding block 14.

[0062] like Figure 4 As shown, in an optional embodiment, an oil outlet channel 15 is opened in the block 1, and the oil outlet channel 15 is connected to the oil inlet channel 11; the position where the oil outlet channel 15 is connected to the oil inlet channel 11 is farther away from the first sphere 111 than the filter 143, ensuring that the pushed out oil is oil filtered by the filter 143, thereby preventing impurities in the oil from affecting the performance of the plunger pump.

[0063] In an optional embodiment, an oil outlet 16 is provided on one end surface of the block 1, and the oil outlet 16 is connected to the oil outlet channel 15; a second sphere 151 is provided in the oil outlet channel 15, and the second sphere 151 is suitable for opening or closing the corresponding oil outlet channel 15; the outlet of each oil outlet channel 15 is connected to the oil outlet 16, so that the drawn oil can pass through the oil outlet channel 15 and then be output through the oil outlet 16; an area with a trapezoidal cross section can be provided in the oil outlet channel 15, and the second sphere 151 is placed in the area, and the area of ​​the area The smaller side is close to the connecting position between the oil inlet channel 11 and the oil outlet channel 15, so that the second sphere 151 can block and close the oil outlet channel 15 when the oil is extracted, and the oil will push the second sphere 151 to open the oil outlet channel 15 when the oil is pushed. A block can be set on the inner wall of this area. When the oil pushes the second sphere 151, the second sphere 151 is blocked by the block, so that the oil outlet channel 15 between the second sphere 151 and the oil inlet channel 11 is opened, and the block is used to prevent the second sphere 151 from blocking another part of the oil outlet channel 15.

[0064] In an optional embodiment, the pushing mechanism includes: a piston rod; a groove 161 corresponding to the oil inlet channel 11 is formed on the other end face of the block 1, and the groove 161 is connected to the corresponding oil inlet channel 11; a piston rod 2 is passed through the groove 161, and the piston rod 2 extends into the corresponding oil inlet channel 11; a third sphere 23 is rotatably arranged on the end of the piston rod 2 away from the first sphere 111; a ring body 21 is arranged on the outer wall of the piston rod 2, and the ring body 21 is arranged close to the third sphere 23; a spring 22 is sleeved on the piston rod 2; the spring 22 is located between the ring body 21 and the inner top surface of the groove 161; one end of the piston rod 2 provided with the third sphere 23 extends out of the groove 161, which is convenient for driving the piston rod 2 to move, and the third sphere 23 can drive the piston rod 2 to move more smoothly.

[0065] In an optional embodiment, the plunger pump also includes: a shell 3; the block 1 is arranged in the shell 3; a plurality of through holes 31 are opened on the outer wall of the shell 3, and the through holes 31 correspond to the oil inlet of the oil inlet channel 11; the through holes 31 can be connected to an external pipeline storing oil, so as to facilitate the oil to be drawn into the plunger pump; a flat position is provided on the outer wall of the shell 3 to facilitate the installation of the plunger pump by means of a wrench or the like.

[0066] In an optional embodiment, a rotating column 4 is rotatably arranged in the shell 3; a side of the rotating column 4 close to the third sphere 23 is an inclined surface; through the rotation of the rotating column 4, the inclined surfaces of the rotating column 4 are brought into contact with the third spheres 23 on the piston rod 2 one by one, so that the piston rod 2 can move one by one to pump the oil in a cycle.

[0067] In the initial state, the rotating block 12 presses the first ball 111 tightly through the torsion spring, so that the first ball 111 blocks the oil inlet channel 11. When it is necessary to extract oil, the inclined surface of the rotating column 4 leaves the third ball 23. At this time, the spring 22 is reset to make the piston rod 2 move away from the truncated cone area 112, so that the space between the truncated cone area 112 and the piston column increases to form a negative pressure. At this time, the second ball 151 closes the oil outlet channel 15. The negative pressure in the oil inlet channel 11 causes the first ball 111 to move toward the piston rod 2. The extrusion rotating block 12 rotates in a direction away from the central axis of the truncated cone area 112. At this time, the oil inlet channel 11 is opened, and the oil outside the plunger pump is drawn into the area between the first sphere 111 and the piston column through the oil inlet channel 11. The gap between the first sphere 111 and the inner wall of the truncated cone area 112 is convenient for the oil to flow through. As the rotating column 4 continues to rotate, the inclined surface gradually rotates to contact the third sphere 23 of the piston rod 2 after the oil is extracted, and at this time, the piston rod 2 is driven to move toward the filter screen 143, pushing the oil to drive the second sphere 151 to move and open the oil outlet channel. 15, the negative pressure in the oil inlet channel 11 gradually disappears, and the rotating block 12 is reset by the torsion spring. The rotating block 12 presses against the first sphere 111 to block the oil inlet channel 11, so as to prevent the oil pushed by the piston rod 2 from moving toward the filter screen 143 and flowing into the oil inlet channel 11 connected to the external oil pipeline through the first sphere 111 again. In addition, the pushed oil can flush out the impurities filtered on the filter screen 143, and the flushed impurities will enter the cavity through the gap between the connecting position of the chamber 13 and the truncated cone area 112 and the rotating block 12. In the chamber 13, impurities are prevented from remaining on the filter screen 143 and affecting the filtering effect during the next oil pumping. At this time, due to the resetting of the rotating block 12, the resistance of the rotating block 12 to the convex plate 141 is reduced, and the pushed oil will cause the filter screen 143 to arch toward the first sphere 111, which is convenient for flushing impurities on the filter screen 143 and guiding impurities into the chamber 13. The pushed oil enters the oil outlet 16 through the oil outlet channel 15 and is output from the plunger pump. As the rotating column 4 continues to rotate, the piston rods 2 move one by one to complete the cycle of repeatedly pumping oil.

[0068] At least one other disclosed embodiment also provides a working method using the above-mentioned plunger pump, including: the reset component presses the first ball 111 to close the oil inlet channel 11, and the first ball 111 squeezes the reset component to rotate away from the central axis of the conical area 112 to open the oil inlet channel 11.

[0069] In summary, the plunger pump and its working method include a block 1 and a driving mechanism; a plurality of oil inlet channels 11 are provided in the block 1, a switch mechanism is provided in the oil inlet channel 11, and the driving mechanism is suitable for driving the switch mechanism to move so as to open or close the oil inlet channel 11; wherein the switch mechanism includes: a first sphere 111 and a reset assembly; a truncated cone region 112 is provided in the oil inlet channel 11, and an end of the truncated cone region 112 with a larger cross-sectional area is close to the oil inlet of the oil inlet channel 11; the reset assembly is provided in the truncated cone region 112, and the first sphere 111 and the reset assembly are provided in the truncated cone region 112. A portion of a sphere 111 is located in the truncated cone area 112, and the first sphere 111 is in contact with the reset assembly; the reset assembly presses the first sphere 111 to close the oil inlet channel 11, and the first sphere 111 squeezes the reset assembly and rotates in a direction away from the central axis of the truncated cone area 112 to open the oil inlet channel 11; after the oil is drawn into the oil inlet channel 11, when the oil needs to be discharged, the reset assembly is used to close the oil inlet channel 11 in the first time to prevent the oil from flowing out through the oil inlet channel 11.

[0070] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0072] Spatially relative terms, such as "inside," "outside," "below," "beneath," "below," "above," "on," and the like, may be used herein to facilitate describing the relationship of one element or feature to another element or feature as illustrated in the figures. Spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures were turned over, elements described as "below" or "beneath" other elements or features would be oriented "above" the other elements or features.

[0073] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A plunger pump, characterized in that: include: Block and propulsion mechanism; A plurality of oil inlet channels are provided in the block, a switch mechanism is provided in the oil inlet channels, and the pushing mechanism is suitable for driving the switch mechanism to move so as to open or close the oil inlet channels; in The switch mechanism comprises: a first sphere and a reset assembly; A truncated cone region is provided in the oil inlet flow channel, and an end of the truncated cone region with a larger cross-sectional area is close to the oil inlet of the oil inlet flow channel; The reset component is arranged in the truncated cone area, a portion of the first sphere is located in the truncated cone area, and the first sphere is in contact with the reset component; The reset component presses against the first ball to close the oil inlet passage, and the first ball squeezes the reset component to rotate in a direction away from the central axis of the truncated cone area to open the oil inlet passage; The reset assembly comprises: a rotating block; The rotating block is rotatably connected to the inner wall of the truncated cone area, and a torsion spring is connected between the rotating block and the inner wall of the truncated cone area; Part of the rotating block is located in the truncated cone area, and the remaining part is located in the block body; A chamber is provided in the block, the remaining part of the rotating block is located in the chamber, and the chamber is connected to the truncated cone area so that the rotating block can be rotated out of or into the chamber; A filter screen is provided in the oil inlet flow channel, and the filter screen is farther away from the oil inlet of the oil inlet flow channel than the truncated cone area; The outer wall of the filter screen is connected to the sliding block, the sliding block passes through the inner wall of the oil inlet channel and extends into the chamber, and the sliding block is slidably connected to the inner wall of the oil inlet channel.

2. The plunger pump according to claim 1, characterized in that: The sliding block is provided with a convex plate, the convex plate corresponds to the rotating block, and the rotating block contacts the corresponding convex plate when rotating into the chamber; A pair of limit plates are arranged in the chamber, the limit plates are arranged up and down, and the sliding block is arranged between the limit plates; The sliding block is slidably connected to the limiting plate.

3. The plunger pump according to claim 2, characterized in that: An oil outlet channel is provided in the block, and the oil outlet channel is communicated with the oil inlet channel; The position where the oil outlet channel is connected to the oil inlet channel is farther away from the first sphere than the filter screen.

4. The plunger pump according to claim 3, characterized in that: An oil outlet is provided on one end surface of the block, and the oil outlet is communicated with the oil outlet passage; A second ball is arranged in the oil outlet channel, and the second ball is suitable for opening or closing the corresponding oil outlet channel.

5. The plunger pump according to claim 4, characterized in that: The pushing mechanism comprises: a piston rod; A groove corresponding to the oil inlet channel is formed on the other end surface of the block, and the groove is communicated with the corresponding oil inlet channel; A piston rod is inserted into the groove, and the piston rod extends into the corresponding oil inlet channel; A third sphere is rotatably arranged on one end of the piston rod away from the first sphere; A ring body is arranged on the outer wall of the piston rod, and the ring body is arranged close to the third sphere; A spring is sleeved on the piston rod; The spring is located between the ring body and the inner top surface of the groove.

6. The plunger pump according to claim 5, characterized in that: The plunger pump further comprises: a housing; The block is arranged in the housing; A plurality of through holes are formed on the outer wall of the shell, and the through holes correspond to the oil inlet of the oil inlet channel.

7. The plunger pump according to claim 6, characterized in that: A rotating column is rotatably arranged in the housing; A surface of the rotating column close to the third sphere is an inclined surface.

8. A working method using the plunger pump as claimed in claim 1, characterized in that: include: The reset component presses against the first sphere to close the oil inlet passage, and the first sphere squeezes the reset component to rotate in a direction away from the central axis of the truncated cone area to open the oil inlet passage.

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