WO2013071732A1 - Pompe à haute pression et sa vanne de répartition - Google Patents

Pompe à haute pression et sa vanne de répartition Download PDF

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Publication number
WO2013071732A1
WO2013071732A1 PCT/CN2012/074040 CN2012074040W WO2013071732A1 WO 2013071732 A1 WO2013071732 A1 WO 2013071732A1 CN 2012074040 W CN2012074040 W CN 2012074040W WO 2013071732 A1 WO2013071732 A1 WO 2013071732A1
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WO
WIPO (PCT)
Prior art keywords
cavity
sealing
plate
communication
chamber
Prior art date
Application number
PCT/CN2012/074040
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English (en)
Chinese (zh)
Inventor
汤如龙
李建涛
Original Assignee
湖南三一智能控制设备有限公司
三一重工股份有限公司
李继波
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 湖南三一智能控制设备有限公司, 三一重工股份有限公司, 李继波 filed Critical 湖南三一智能控制设备有限公司
Publication of WO2013071732A1 publication Critical patent/WO2013071732A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0003—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber
    • F04B7/0011—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber and having an oscillating movement

Definitions

  • the invention relates to the technical field of high pressure pumps, and in particular to a distribution valve. Furthermore, the invention relates to a high pressure pump comprising such a dispensing valve.
  • the prior art fire water pump generally includes two types, one is a centrifugal type water pump, but the type of water pump is limited by pressure and cannot meet the fire fighting demand of a high-rise or super high-rise; the other is a plunger type water pump, but The water pump is limited by flow and cannot meet the fire fighting requirements of high-rise or super high-rise.
  • the technical problem to be solved by the present invention is to provide a distribution valve, which is designed to realize continuous pumping of a medium such as water under the driving of external power, and has a short commutation time, thereby avoiding a flow interruption phenomenon. occur. Further, another technical problem to be solved by the present invention is to provide a high pressure pump including the distribution valve.
  • the present invention provides a dispensing valve for a high pressure pump, the high pressure pump including a pumping mechanism;
  • the dispensing valve includes an upper valve body provided with an upper chamber, a lower valve body provided with a lower chamber, and an intermediate partition separating the upper chamber and the lower chamber; the upper chamber is connected with a medium inlet, the lower portion The cavity is connected to the medium outlet and the first interface and the second interface respectively communicating with the two conveying cylinders of the pumping mechanism;
  • the dispensing valve further includes a spool that is rotatable and axially coupled in series with the upper valve body and the lower valve body, and the spool and the upper chamber partition in the upper chamber will be the upper chamber Separating the first cavity and the second cavity in selective communication with the medium inlet, and separating the lower cavity from the lower cavity in the lower cavity to be selectively connected to the medium outlet a three-cavity and a fourth cavity;
  • the first interface is in communication with the third cavity
  • the second interface is in communication with the fourth cavity
  • the middle partition plate is provided to communicate with the first cavity and the third cavity a first communication hole of the body, and a second communication hole connecting the second cavity and the fourth cavity;
  • the first cavity is in communication with the medium inlet, the third cavity is in communication with the medium outlet; the second cavity is in communication with the medium inlet, The fourth cavity is disconnected from the medium outlet;
  • the first cavity is in communication with the medium inlet, the third cavity is disconnected from the medium outlet; the second cavity is disconnected from the medium inlet, The fourth cavity is in communication with the media outlet.
  • the valve core includes an upper sealing plate disposed in the upper chamber and a lower sealing plate disposed in the lower chamber, the upper sealing plate and the upper chamber partition separating the upper chamber
  • the first cavity and the second cavity, the lower sealing plate and the lower cavity partition separate the lower cavity into the third cavity and the fourth cavity.
  • the upper cavity partition plate comprises an upper circular arc plate coaxial with the valve core, an upper straight plate connecting the upper circular arc plate and a circumferential side wall of the upper cavity, and respectively disposed on the upper plate a first sealing curved plate and a second sealing curved plate on both sides of the circular arc plate;
  • the upper sealing plate includes a first sealing portion and a second sealing portion, and the first sealing portion is caught on the first sealing curved plate to interrupt the first cavity and the first sealing portion
  • the medium inlet is connected; the second sealing portion is caught on the second sealing curved plate to interrupt the communication between the second cavity and the medium inlet as the spool is reversed.
  • the valve core includes a rotating shaft disposed in the upper circular arc plate, the first sealing portion is connected to the rotating shaft by a first bending arm, and the second sealing portion is connected by a second curved arm On the rotating shaft;
  • the first curved arm protrudes from an opening of the upper circular arc plate and allows the first sealing portion to be stuck on the first sealing curved plate;
  • the second curved arm is formed by the upper circular arc plate The opening extends and allows the second seal to be caught on the second sealing curved plate.
  • a first sealing groove and a second sealing groove are respectively formed on the top wall of the upper cavity on both sides of the upper straight plate;
  • the first sealing groove is provided with a first vertical step and a first horizontal step aligned with an end surface of the first sealing curved plate, and the first sealing portion is simultaneously stuck to the first sealing curved plate, the first a vertical step and the first lateral step to interrupt communication between the first cavity and the medium inlet;
  • the second sealing groove is provided with a second vertical alignment with an end surface of the second sealing curved plate a step and a second lateral step, the second sealing portion being simultaneously stuck on the second sealing curved plate, the second vertical step and the second horizontal step to interrupt the second cavity and the medium Import connectivity.
  • a top surface of the intermediate partition facing the upper chamber is provided with a third sealing groove corresponding to the position of the first sealing groove, and a fourth sealing corresponding to the position of the second sealing groove a bottom end portion of the first sealing portion is disposed in the third sealing groove, and a bottom end portion of the second sealing portion is disposed in the fourth sealing groove.
  • the lower cavity partition plate comprises a lower circular arc plate coaxial with the valve core, and a lower straight plate connecting the lower circular arc plate and the circumferential side wall of the lower cavity;
  • the spool includes a rotating shaft disposed in the lower circular arc plate, and the lower sealing plate is coupled to the rotating shaft and protrudes from an opening of the lower circular arc plate;
  • the lower sealing plate is caught on the first end surface of the lower circular arc plate to interrupt the communication of the fourth cavity with the medium outlet as the spool rotates forward; Inverting, the lower sealing plate is caught on the second end surface of the lower circular arc plate to interrupt the communication between the third cavity and the medium outlet.
  • a bottom surface of the lower chamber is provided with a fifth sealing groove
  • the fifth sealing groove is provided with a fourth vertical step and a fourth horizontal step which are flush with the first end surface, and a fifth vertical step and a fifth horizontal step with two end faces flush;
  • the lower sealing plate is simultaneously caught on the first end surface of the lower circular arc plate, the fourth vertical step and the fourth horizontal step as the spool is rotated forward, so as to interrupt the fourth cavity and The medium outlet is connected; the lower sealing plate is simultaneously stuck on the second end surface of the lower circular arc plate, the fifth vertical step and the fifth horizontal step, as the valve core is reversed, In order to interrupt the communication of the third cavity with the medium outlet.
  • the intermediate partition plate is provided with a sixth sealing groove corresponding to the position of the fifth sealing groove toward the bottom wall of one side of the lower cavity, and the upper end portion of the lower sealing plate is disposed at the sixth Seal In the slot.
  • the present invention further provides a high pressure pump including a pumping mechanism; the high pressure pump further comprising the dispensing valve according to any one of the above, wherein the first interface and the second interface respectively It is in communication with two delivery cylinders of the pumping mechanism.
  • the spool is rotating forward.
  • the spool interrupts the communication between the first chamber and the medium inlet, and at the same time causes the second chamber to communicate with the medium inlet; in the lower chamber of the lower valve body, The spool causes the fourth cavity to be disconnected from the medium outlet, and at the same time, the third cavity is in communication with the medium outlet, and in the lower cavity, the first interface is in communication with the third cavity, the second interface and the fourth cavity Connected.
  • the piston in the transfer cylinder communicating with the second interface retreats, and accordingly, the fourth cavity forms a low pressure chamber; under this premise, since the second cavity is in communication with the medium inlet, and second The cavity and the fourth cavity are connected through the second communication hole, so water or other medium (hereinafter collectively referred to as medium) enters the second cavity through the medium inlet, and then enters the fourth cavity through the second communication hole, the fourth cavity The medium in the body then enters the delivery cylinder through the second interface.
  • the piston in the delivery cylinder communicating with the first interface advances, thereby pushing the medium into the third cavity.
  • the second cavity and the fourth cavity and the corresponding delivery cylinder perform an operation of absorbing medium, and the first cavity and the third cavity and the corresponding delivery cylinder perform pumping medium operating.
  • the spool When the spool is reversed, in the upper chamber of the upper valve body, the spool communicates the first chamber with the medium inlet, and at the same time, the second chamber is disconnected from the medium inlet; in the lower chamber of the lower valve body, the valve The core causes the fourth cavity to communicate with the medium outlet, and at the same time, the third cavity is disconnected from the medium outlet, and in the lower cavity, the first interface is in communication with the third cavity, and the second interface is in communication with the fourth cavity .
  • the second cavity and the fourth cavity and the corresponding delivery cylinder perform an operation of pumping the medium
  • the first cavity and the third cavity and the corresponding delivery cylinder perform an operation of absorbing the medium
  • the swing of the spool can be driven by the rocking mechanism, and the swing angle can be small, so that the commutation time is short, and the occurrence of the flow interruption phenomenon can be avoided.
  • the distribution valve provided by the present invention can realize continuous pumping of the medium under the driving of the two conveying cylinders of the pumping structure, and the commutation time is short, so that the occurrence of the flow interruption phenomenon can be avoided.
  • the technical effect of the high-pressure pump including the above-mentioned distribution valve provided by the present invention is the same as that of the above-mentioned distribution valve, and will not be described herein.
  • FIG. 1 is a plan view of a dispensing valve taken along an upper valve body according to an embodiment of the present invention
  • FIG. 2 is a top plan view of the dispensing valve taken along the lower valve body according to an embodiment of the present invention
  • FIG. 3 is a schematic view showing the structure of the valve core of the dispensing valve of Figures 1 and 2;
  • Figure 3-1 is a top view of the spool of Figure 3;
  • Figure 4 is a schematic view showing the structure of the upper valve body of the distribution valve of Figures 1 and 2;
  • Figure 4-1 is a bottom view of the upper valve body of Figure 4.
  • Figure 5 is a schematic view showing the structure of the intermediate partition of the distribution valve of Figures 1 and 2;
  • Figure 5-1 is a view of the side of the intermediate partition of Figure 5 facing the upper valve body;
  • Figure 5-2 is a view of the side of the intermediate partition of Figure 5 facing the lower valve body;
  • Figure 6 is a schematic view showing the structure of the lower valve body of the dispensing valve of Figures 1 and 2;
  • Figure 6-1 is a plan view of the lower valve body of Figure 6;
  • Figure 7 is an overall structural view of a dispensing valve in an embodiment of the present invention.
  • Figure 8 is an exploded exploded view of the dispensing valve of Figure 7;
  • FIG. 9 is a schematic structural view of a high pressure pump according to an embodiment of the present invention.
  • Figure 10 is a schematic view showing the structure of the check valve of the high pressure pump of Figure 9.
  • valve body 31 lower cavity; 311 third cavity; 312 fourth cavity; 32 medium outlet; 33 first interface; 34 second interface; 35 lower cavity partition; 351 lower circular plate; 351a first End face; 351b second end face; 352 lower straight plate; 36 fifth sealing groove; 361 fourth vertical step; 362 fourth horizontal step; 363 fifth vertical step; 364 fifth horizontal step;
  • the core of the present invention is to provide a distribution valve whose structural design enables continuous pumping of a medium such as water under the driving of external power, and has a short commutation time, thereby avoiding the occurrence of a flow interruption phenomenon. Furthermore, another core of the present invention is to provide a high pressure pump including the dispensing valve.
  • FIG. 1 is a plan view of a dispensing valve taken along the upper valve body according to an embodiment of the present invention
  • FIG. 2 is a plan view of the dispensing valve taken along the lower valve body according to an embodiment of the present invention.
  • the dispensing valve provided by the present invention is for a high pressure pump, and the high pressure pump includes a pumping mechanism 1; the dispensing valve includes an upper valve body 2 provided with an upper chamber 21 and a lower chamber 31 The lower valve body 3 and the intermediate partition plate 4 separating the upper chamber 21 and the lower chamber 31; the upper chamber 21 is connected to the medium inlet 22, and the lower chamber 31 is connected to the medium outlet 32 and communicates with the two delivery cylinders 11 of the pumping mechanism 1, respectively.
  • the dispensing valve further includes a spool 5 that is rotatable and axially coupled in series with the valve body 2 and the lower valve body 3, and the spool 5 and the upper chamber partition 23 in the upper chamber 21 separate the upper chamber 21 from
  • the medium inlet 22 is selectively connected to the first cavity 211 and the second cavity 212, and the lower cavity 31 in the lower cavity 31 separates the lower cavity 31 into a third cavity 311 which is in selective communication with the medium outlet 32.
  • the fourth cavity 312 it should be noted that the meaning of the alternative communication is: one is connected, and the other is disconnected.
  • the first interface 33 is in communication with the third cavity 311, the second interface 34 is in communication with the fourth cavity 312, and the intermediate partition 4 is provided with a first communication hole 41 communicating with the first cavity 211 and the third cavity 311. And a second communication hole 42 connecting the second cavity 212 and the fourth cavity 312;
  • the first cavity 211 communicates with the medium inlet 22, and the third cavity 311 and the medium outlet 32, and the other group is interrupted;
  • the second cavity 212 and The medium inlet 22 and the fourth chamber 312 are in communication with one of the two groups of media outlets 32, and the other group is disconnected.
  • the spool 5 rotates forward (clockwise). As shown in FIG. 1, in the upper chamber 21 of the upper valve body 2, the spool 5 interrupts the communication between the first chamber 211 and the medium inlet 22, and simultaneously The second cavity 212 is in communication with the medium inlet 22; as shown in Fig. 2, in the lower chamber 31 of the lower valve body 3, the spool 5 interrupts the communication between the fourth cavity 312 and the medium outlet 32, and at the same time causes the third cavity
  • the 311 is in communication with the medium outlet 32, and in the lower chamber 31, the first interface 33 is in communication with the third cavity 311, and the second interface 34 is in communication with the fourth cavity 312.
  • the piston in 11 is retracted, and accordingly, the fourth cavity 312 forms a low pressure chamber; in this case, as shown in FIG. 1, since the second cavity 212 is in communication with the medium inlet 22, and the second cavity 212 and the fourth The cavity 312 is communicated through the second communication hole 42 such that water or other medium (hereinafter collectively referred to as medium) enters the second cavity 212 through the medium inlet 22, and then enters the fourth cavity 312 through the second communication hole 42.
  • the medium in the fourth cavity 312 then enters the delivery cylinder 11 through the second interface 34.
  • the piston in the transfer cylinder 11 communicating with the first interface 33 advances, thereby pushing the medium into the third cavity 311 as shown in FIG. 1, at this time due to the third cavity 311.
  • the first cavity 211 communicating through the first communication hole 41 is disconnected from the medium inlet 22, and thus the medium in the third cavity 311 is all discharged from the medium outlet 32 that is in communication with the third cavity 311 at this time.
  • the second cavity 212 and the fourth cavity 312 and the corresponding delivery cylinder 11 perform an operation of absorbing medium
  • the first cavity 211 and the third cavity 311 and the corresponding delivery cylinders 11 Perform the operation of pumping the media.
  • the spool 5 When the spool 5 is reversed (counterclockwise rotation), in the upper chamber 21 of the upper valve body 2, the spool 5 communicates the first chamber 211 with the medium inlet 22 while simultaneously causing the second chamber 212 and the medium inlet 22 interrupted communication; in the lower chamber 31 of the lower valve body 3, the spool 5 causes the fourth chamber 312 to communicate with the medium outlet 32, and at the same time, the third chamber 311 is disconnected from the medium outlet 32, while the lower chamber 31 is in the lower chamber 31.
  • the first interface 33 is in communication with the third cavity 311, and the second interface 34 is in communication with the fourth cavity 312.
  • the second cavity 212 and the fourth cavity 312 and the corresponding delivery cylinder 11 perform an operation of pumping the medium, and the first cavity 211 and the third cavity 311 and the corresponding delivery cylinder 11 perform absorption.
  • the specific process of the operation of the medium is opposite to the above process, and will not be described herein.
  • the two delivery cylinders 11 of the pumping mechanism 1 alternately advance and retreat, the first cavity 211 and the third cavity 311, and the second cavity 212 and the fourth cavity 312 alternately perform absorption medium action and pumping medium. The action thus achieves continuous pumping of the medium.
  • the swing of the spool 5 can be driven by the rocking mechanism 6, and the swing angle can be made small, so that the commutation time is short, and the occurrence of the cutoff phenomenon can be avoided.
  • FIG. 3 is a schematic structural view of the valve core of the distribution valve of FIG. 1 and FIG. 2;
  • FIG. 3-1 is a top view of the valve core of FIG. .
  • the spool 5 includes an upper sealing plate 51 disposed in the upper chamber 21 and a lower sealing plate 52 disposed in the lower chamber 31; as shown in FIG.
  • the upper chamber 21 is separated from the upper chamber 21 by the upper chamber 21 as a first chamber 211 and a second chamber 212.
  • the lower sealing plate 52 and the lower chamber partition 35 separate the lower chamber 31 into a third chamber. 311 and fourth cavity 312.
  • the upper seal plate 51 and the lower seal plate 52 rotate with it, thereby connecting or interrupting the respective chambers to the corresponding medium inlet 22 or medium outlet 32.
  • the upper cavity partition 23 can also be specifically designed.
  • Figure 4 is a schematic view of the upper valve body of the distribution valve of Figures 1 and 2;
  • Figure 4-1 is a bottom view of the upper valve body of Figure 4.
  • the upper chamber partition plate 23 includes an upper circular arc plate 231 coaxial with the valve core 5, an upper straight plate 232 connecting the upper circular arc plate 231 and the circumferential side wall of the upper chamber 31, and is respectively disposed on the upper circle.
  • the first sealing curved plate 233 and the second sealing curved plate 234 on both sides of the arc plate 231.
  • the upper seal plate 51 includes a first seal portion 511 and a second seal portion 512.
  • the spool 5 is disposed in the upper circular arc plate 231.
  • the first sealing portion 511 is connected to the rotating shaft 53 via the first bending arm 541, and the second sealing portion 512 is connected to the rotating shaft 53 via the second bending arm 542.
  • the first curved arm 541 protrudes from the opening of the upper circular arc plate 231 and causes the first sealing portion 511 to be caught on the first sealing curved plate 233; when the spool 5 is reversed, the first The two curved arms 542 extend from the opening of the upper circular arc plate 231 and allow the second sealing portion 512 to be caught on the second sealing curved plate 234.
  • the first curved arm 541 is designed to make the first sealing portion 511 opposite to the first sealing curved plate 233, so that the first sealing portion 511 can be caught on the first sealing curved plate 233, thereby achieving the first The purpose of the cavity 211 is sealed.
  • the second curved arm 542 is structurally configured such that the second sealing portion 512 is opposite to the second sealing curved plate 234, so that the second sealing portion 512 can be caught on the second sealing curved plate 234, thereby achieving the second The purpose of the cavity 212 is sealed.
  • a first sealing groove 24 and a second sealing groove 25 are respectively formed on the top walls of the upper chambers on both sides of the upper straight plate 232, and the first sealing groove 24 is opened.
  • the curved plate 233, the first vertical step 241 and the first lateral step 242 are arranged to interrupt the communication of the first cavity 211 with the medium inlet.
  • This structural design further ensures the sealing effect on the first cavity 211. Moreover, since the medium is filled with the first cavity 211, the medium pressure in the first cavity 211 further causes the first sealing portion 511 to be pressed against the first sealing curved plate 233, the first vertical step 241, and the first horizontal step 242. Upper, thereby further ensuring the sealing effect on the first cavity 211.
  • a second sealing groove 25 is further formed in the upper cavity 21; and the second sealing groove 25 is opened with an end surface of the second sealing curved plate 234.
  • the aligned second vertical step 251 and the second horizontal step 252, the second sealing portion 512 is simultaneously caught on the second sealing curved plate 234, the second vertical step 251 and the second horizontal step 252 to interrupt the second cavity 212 and the medium
  • the connection of the inlet 22 is.
  • the technical effect of the structural design is related to the technical effect of the above structure The same is not repeated here.
  • FIG. 5 is a schematic structural view of the intermediate partition of the distribution valve of FIGS. 1 and 2;
  • FIG. 5-1 is the middle partition of FIG. A view of one side of the valve body;
  • Fig. 5-2 is a view of the side of the intermediate partition of Fig. 5 facing the lower valve body.
  • the top wall of the intermediate partition 4 facing the upper chamber 21 is provided with a third sealing groove 43 corresponding to the position of the first sealing groove 24, and the position of the second sealing groove 25.
  • Corresponding fourth sealing groove 44; the bottom end portion of the first sealing portion 511 is disposed in the third sealing groove 43, and when the first sealing portion 511 is caught on the first sealing curved plate 233, the first sealing portion 511 The lower end surface is caught on the end surface of the third seal groove 43, thereby further improving the sealing effect on the first cavity 211.
  • the bottom end portion of the second sealing portion 512 is disposed in the fourth sealing groove 44, and when the second sealing portion 512 is caught on the second sealing curved plate 234, the lower end surface of the second sealing portion 512 is stuck in the fourth
  • the end surface of the sealing groove 44 is formed to further improve the sealing effect on the second cavity 212.
  • Figure 6 is a schematic view of the lower valve body of the distribution valve of Figures 1 and 2;
  • Figure 6-1 is a top view of the lower valve body of Figure 6.
  • the lower chamber partition plate 35 includes a lower circular arc plate 351 coaxial with the spool 5, and a lower straight plate 352 connecting the lower circular arc plate 351 and the circumferential side wall of the lower chamber 31; as shown in FIG. 2, the valve The core 5 includes a rotating shaft 53 provided in the lower circular arc plate 351, and the lower sealing plate 52 is coupled to the rotating shaft 53 and protrudes from the opening of the lower circular arc plate 351.
  • the lower sealing plate 52 is caught on the first end surface 351a of the lower circular arc plate 351 to interrupt the fourth cavity 312 and the medium outlet 32.
  • the fourth cavity 312 is sealed while the third cavity 311 is in communication with the medium outlet 32; as the spool 5 is reversed, the lower sealing plate 52 is caught on the second end surface 351b of the lower circular plate 351 to interrupt the first
  • the three chambers 311 are in communication with the media outlet 32 such that the third cavity 311 is sealed while the fourth cavity 312 is in communication with the media outlet 32.
  • the above structural design is very convenient for the medium outlet 32 to be in selective communication with the third through cavity 311 and the fourth cavity 312, and the structure is relatively simple and the manufacturing cost is low.
  • the bottom wall of the lower chamber 31 is provided with a fifth sealing groove 36
  • the fifth sealing groove 36 is provided with a fourth vertical step 361 which is flush with the first end surface 351a and Fourth
  • the horizontal step 362 and the fifth vertical step 363 and the fifth horizontal step 364 are flush with the second end surface 351b.
  • the structural design can further ensure the sealing effect of the fourth cavity 312; as the spool 5 is reversed, the lower sealing plate 52 is simultaneously stuck to the lower circular plate.
  • the second end surface 351b, the fifth vertical step 363 and the fifth horizontal step 364 of the 351 are arranged to interrupt the communication between the third cavity 311 and the medium outlet 32.
  • the structural design can further ensure the sealing effect of the third cavity 311.
  • the intermediate partition 4 can also be specifically designed.
  • the bottom wall of the intermediate partition 4 facing the lower chamber is provided with a sixth sealing groove 45 corresponding to the position of the fifth sealing groove 36, and the upper end portion of the lower sealing plate 52. It is disposed in the sixth sealing groove 45.
  • the top end surface of the lower sealing plate 52 is further caught on the end surface of the sixth sealing groove 45, thereby further ensuring the fourth cavity 312 or the sealing effect of the third cavity 311.
  • FIG. 7 is an overall structural view of a distribution valve according to an embodiment of the present invention.
  • FIG. 8 is an exploded exploded view of the distribution valve of FIG.
  • the overall shape of the distribution valve can be referred to FIG. 7.
  • the distribution valve includes an upper valve body 2 and a lower valve body 3.
  • the upper valve body is provided with a medium inlet 22, the lower valve body is provided with a medium outlet 32, and two The first interface 33 and the second interface 34 of the delivery cylinder.
  • the decomposition structure of the distribution valve can be referred to Fig. 8.
  • the distribution valve includes an upper valve body 2, a lower valve body 3, an intermediate partition 4, and a spool 5, and the spool 5 is rotated through an upper chamber partition 23 in the upper valve body 2, and an intermediate partition 4 And the lower chamber partition 35 in the lower valve body 3, thereby achieving assembly.
  • FIG. 9 is a schematic structural view of a high pressure pump according to an embodiment of the present invention
  • FIG. 10 is a structure of a check valve of the high pressure pump of FIG. schematic diagram.
  • the high pressure pump includes a pumping mechanism 1; the high pressure pump further includes the above-described dispensing valve 7, the first interface 33 and the second interface 34 are respectively coupled to the pumping mechanism 1
  • the cylinder 11 is in communication.
  • the medium outlet 32 of the distribution valve 7 is connected with a check valve 8 which can cut off the delivery pipe and the distribution valve 7 during the reversing of the distribution valve 7 Prevent backflow of media in the transfer tube.
  • the high pressure pump Also included is a rocking mechanism 6 that employs a plunger cylinder to drive the spool 5 forward or reverse to provide power to the spool 5 for commutation.
  • Other parts of the high pressure pump can be referred to the prior art and will not be developed herein.
  • the present invention is not limited to the medium in the dispensing valve and the high pressure pump, and the medium may be water, hydraulic oil, or other medium suitable for pumping.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Multiple-Way Valves (AREA)

Abstract

L'invention concerne une vanne de répartition et une pompe à haute pression comportant la vanne de répartition. La vanne de répartition comporte un corps supérieur (2) de vanne muni d'une cavité supérieure (21), un corps inférieur (3) de vanne muni d'une cavité inférieure (31) et une plaque séparatrice médiane (4). La cavité supérieure (21) est en communication avec une entrée (22) de milieu et la cavité inférieure (31) est en communication avec une sortie (32) de milieu. Lorsqu'un boisseau (5) de vanne tourne dans le sens horaire ou anti-horaire, un groupe parmi un groupe constitué d'un premier corps (211) de cavité et de l'entrée (22) de milieu et un groupe constitué d'un troisième corps (311) de cavité et de la sortie (32) de milieu est mis en communication, et l'autre groupe n'est pas mis en communication ; et un groupe parmi un groupe constitué d'un deuxième corps (212) de cavité et de l'entrée (22) de milieu et un groupe constitué d'un quatrième corps (312) de cavité et de la sortie (32) de milieu est mis en communication, et l'autre groupe n'est pas mis en communication. La conception structurelle de la vanne de répartition permet de réaliser le pompage continu d'un milieu fluide comme de l'eau, sous l'action d'une puissance extérieure, et le temps d'inversion est court, ce qui permet d'éviter toute coupure.
PCT/CN2012/074040 2011-11-15 2012-04-14 Pompe à haute pression et sa vanne de répartition WO2013071732A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110361873.1A CN102434450B (zh) 2011-11-15 2011-11-15 一种高压泵及其分配阀
CN201110361873.1 2011-11-15

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WO2013071732A1 true WO2013071732A1 (fr) 2013-05-23

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WO (1) WO2013071732A1 (fr)

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CN106917733A (zh) * 2015-12-25 2017-07-04 罗凤玲 一种动力装置
CN110803504B (zh) * 2019-10-21 2021-09-10 苏师大半导体材料与设备研究院(邳州)有限公司 一种双缸建筑材料推送机构
CN110803507B (zh) * 2019-10-21 2021-09-10 苏师大半导体材料与设备研究院(邳州)有限公司 一种建筑材料高效推送方法
CN110761987B (zh) * 2019-10-25 2021-09-10 苏师大半导体材料与设备研究院(邳州)有限公司 一种陶瓷浆料泵用介质分配机构
CN113090490A (zh) * 2021-03-30 2021-07-09 中山大洋电机股份有限公司 具有管路分配功能的水泵及燃料电池系统和控制方法

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