Low-pulse high-pressure multi-plunger constant flow pump

Abstract

The utility model relates to the technical field of multi-plunger constant flow pumps, in particular to a low-pulse high-pressure multi-plunger constant flow pump which comprises a multi-plunger constant flow pump body, a liquid inlet pipe is arranged on the multi-plunger constant flow pump body, a multi-filtering mechanism is installed on the liquid inlet pipe, the multi-filtering mechanism comprises a filtering box, one end of the filtering box is provided with a connector, and the other end of the filtering box is provided with a water inlet pipe. The connector is sleeved with a connecting bolt, and the filter box is provided with a triple filter screen assembly. The connecting bolt is used for being connected with a liquid inlet pipe, and the triple filter screen assembly is used for filtering particulate matter in media in a multiple mode. According to the utility model, the three stages of filtering mechanisms are arranged at the liquid inlet pipe, so that particulate pollutants with different particle sizes can be intercepted stage by stage, the cleanliness of a medium is obviously improved, and the abnormal wear of a plunger pair and a sealing element is reduced; the problems of abrasion, leakage and efficiency reduction caused by particle pollution of a traditional plunger pump are effectively solved, and the service life of the pump is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of multi-plunger constant flow pump, especially to a low pulse high pressure multi-plunger constant flow pump. BACKGROUND

[0002] The low pulse high pressure multi-plunger constant flow pump is a hydraulic pump with multiple plungers working alternately, which significantly reduces the output pressure pulsation by optimizing the plunger phase arrangement and flow superposition, and realizes the stable high-pressure fluid delivery. Its core features include: high pressure output (usually ≥ 30MPa), low flow fluctuation (pulsation rate < 3%), high volumetric efficiency (> 95%), and precise matching of plunger pairs and wear-resistant sealing structure, suitable for fields with strict requirements on pressure stability and medium cleanliness, such as precision hydraulic systems, oil fracturing, ultra-high pressure cleaning, etc. Through multi-stage filtration and real-time pollution monitoring, the service life of key components can be further extended.

[0003] In the fields of hydraulic transmission, petrochemical industry, high-pressure cleaning and precision fluid delivery, multi-plunger constant flow pumps are widely used due to their high pressure, large flow and good stability. However, in the long-term operation of traditional plunger pumps, the particles in the medium easily cause abnormal wear of the plunger pair and the sealing element, which in turn leads to leakage, efficiency decline and even failure, seriously affecting the reliability and service life of the pump. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the defects that the particles in the medium easily cause abnormal wear of the plunger pair and the sealing element in the long-term operation of the existing traditional plunger pump, which in turn leads to leakage, efficiency decline and even failure, seriously affecting the reliability and service life of the pump, and proposes a low pulse high pressure multi-plunger constant flow pump.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A low pulse high pressure multi-plunger constant flow pump, comprising a multi-plunger constant flow pump body, a liquid inlet pipe is arranged on the multi-plunger constant flow pump body, a multiple filtration mechanism is installed on the liquid inlet pipe, and the multiple filtration mechanism comprises:

[0007] A filter box is provided with a connecting head at one end, a connecting bolt is sleeved on the connecting head, and a three-filter screen assembly is arranged on the filter box.

[0008] The connecting bolt is used to connect with the liquid inlet pipe, and the three-filter screen assembly is used to filter particles in the medium.

[0009] Preferably, the triple filter screen assembly comprises a rectangular partition plate, a mounting port, a coarse filter screen, a medium filter screen, a fine filter screen, a side rubber pad, a locking bolt and a particle counter, the rectangular partition plate is fixedly arranged in the filter box, the mounting port is arranged at the top of the filter box, the coarse filter screen, the medium filter screen and the fine filter screen are arranged in the mounting port, the side rubber pad is arranged outside the coarse filter screen, the medium filter screen and the fine filter screen, the locking bolt is arranged at the top of the coarse filter screen, the medium filter screen and the fine filter screen, and the particle counter is fixedly arranged at the top of the filter box.

[0010] Preferably, a through hole is formed in the middle end of the outer wall of the rectangular partition plate, and the coarse filter screen, the medium filter screen and the fine filter screen are arranged on one side of the liquid inlet of the rectangular partition plate.

[0011] Preferably, the filtering precision of the coarse filter screen is 25 microns, the filtering precision of the medium filter screen is 10 microns, and the filtering precision of the fine filter screen is 3 microns.

[0012] Preferably, a control panel is arranged outside the filter box.

[0013] Preferably, a concave groove in the shape of a convex character is formed in the connecting head, and an annular rubber pad in the shape of H in cross section is arranged on the concave groove.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1. When the utility model is used, the three-stage filtering mechanism of "coarse filtering (25 microns) + fine filtering (10 microns) + superfine filtering (3 microns)" can be arranged at the liquid inlet pipe, different particle pollutants can be intercepted step by step, the medium cleanliness can be significantly improved, and the abnormal wear of the plunger pair and the sealing element can be reduced; the online particle counter can be used to monitor the oil state in real time, the filter screen blockage or the pollution exceeding the standard can be found in time, intelligent early warning and maintenance can be realized, the wear, leakage and efficiency reduction of the traditional plunger pump caused by particle pollution can be solved, and the service life of the pump can be greatly prolonged.

[0016] 2. When the utility model is used, the modular detachable design can be used, the filter screen can be conveniently and efficiently replaced, and the maintenance cost can be reduced; meanwhile, the fluid filtering effect can be optimized, the pressure pulsation can be reduced, and the output of the pump can be more stable and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A three-dimensional structure schematic view of a low-pulse high-pressure multi-plunger constant-flow pump is provided for the utility model;

[0018] Figure 2 A three-dimensional structure schematic view of a multiple filtering mechanism of a low-pulse high-pressure multi-plunger constant-flow pump is provided for the utility model;

[0019] Figure 3 A multiple filtering mechanism sectional view of the low-pulse high-pressure multi-plunger constant-flow pump is provided in the utility model;

[0020] Figure 4 An enlarged view of structure A of the low-pulse high-pressure multi-plunger constant-flow pump is provided in the utility model;

[0021] Figure 5 A three-dimensional structure schematic diagram of the coarse filter screen, the medium filter screen and the fine filter screen of the low-pulse high-pressure multi-plunger constant-flow pump is provided in the utility model.

[0022] In the drawing: 1, the multi-plunger constant-flow pump body; 2, the liquid inlet pipe; 3, the multiple filtering mechanism; 4, the filter box; 5, the connecting head; 6, the connecting bolt; 7, the three-filter screen assembly; 8, the rectangular partition plate; 9, the mounting port; 10, the coarse filter screen; 11, the medium filter screen; 12, the fine filter screen; 13, the side rubber pad; 14, the locking bolt; 15, the particle counter; 16, the control panel; 17, the groove; 18, the annular rubber pad. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Reference Figures 1-5 A low-pulse high-pressure multi-plunger constant-flow pump, comprising a multi-plunger constant-flow pump body 1, the multi-plunger constant-flow pump body 1 is provided with a liquid inlet pipe 2, the liquid inlet pipe 2 is installed with a multiple filtering mechanism 3, the multiple filtering mechanism 3 comprises: a filter box 4, one end of the filter box 4 is provided with a connecting head 5, the connecting head 5 is sleeved with a connecting bolt 6, and the filter box 4 is provided with a three-filter screen assembly 7; the three-filter screen assembly 7 comprises a rectangular partition plate 8, a mounting port 9, a coarse filter screen 10, a medium filter screen 11, a fine filter screen 12, a side rubber pad 13, a locking bolt 14 and a particle counter 15, the rectangular partition plate 8 is fixedly arranged in the filter box 4, the mounting port 9 is arranged at the top of the filter box 4, the coarse filter screen 10, the medium filter screen 11 and the fine filter screen 12 are all arranged in the mounting port 9, the side rubber pad 13 is arranged outside the coarse filter screen 10, the medium filter screen 11 and the fine filter screen 12, the locking bolt 14 is arranged at the top of the coarse filter screen 10, the medium filter screen 11 and the fine filter screen 12, and the particle counter 15 is fixedly arranged at the top of the filter box 4.

[0025] The connecting bolt 6 is used for being connected with the liquid inlet pipe 2, and the three-filter screen assembly 7 is used for the particulate matter in the multiple filtering medium.

[0026] It should be noted that the multi-plunger constant flow pump body 1, the particle counter 15 and the control panel 16 are prior art, the particle counter 15 is used for monitoring the oil pollution degree in real time, and timely warning can be made when the filter screen is blocked or the particle exceeds the standard, so as to avoid the performance decline of the pump due to filter failure and improve the operation reliability; the specific model and specification need to be selected and determined according to the actual specification of the device, the specific selection calculation method adopts the prior art in the field, and thus is not redundant, and the power supply can be provided by an external device and the opening and closing can be controlled.

[0027] Further, a through hole is formed in the outer wall of the rectangular partition plate 8, and the coarse filter screen 10, the medium filter screen 11 and the fine filter screen 12 are arranged on one side of the liquid inlet of the rectangular partition plate 8.

[0028] Among them, the medium first passes through the coarse filter screen 10, then passes through the through hole, enters the next link, and after the medium passes through the medium filter screen 11 and the fine filter screen 12 in turn, it can be injected into the multi-plunger constant flow pump body 1.

[0029] Further, the filtering precision of the coarse filter screen 10 is 25μm, the filtering precision of the medium filter screen 11 is 10μm, and the filtering precision of the fine filter screen 12 is 3μm.

[0030] Among them, the step-by-step progressive filtering is adopted, the large particle impurities are intercepted by the 25μm coarse filter screen first, and then the small particles are gradually removed by the 10μm and 3μm filter screens, so as to effectively reduce the content of pollutants in the medium, reduce the abnormal wear of the plunger pair and the sealing element, and prolong the service life of the pump.

[0031] Further, the control panel 16 is arranged on the outside of the filter box 4.

[0032] Among them, the control panel 16 is connected with the particle counter 15, and the data of the particle counter 15 can be displayed in real time, which is more intuitive and convenient.

[0033] Further, a recess 17 in the shape of a convex character is formed on the connecting head 5, and a ring-shaped rubber pad 18 in the shape of H is installed on the recess 17.

[0034] Among them, the H-shaped ring-shaped rubber pad 18 and the side sealing structure are adopted to ensure the sealing performance of the connection between the filter box 4 and the liquid inlet pipe 2, prevent the medium from leaking under high pressure working condition, and improve the safety of the system.

[0035] Working principle:

[0036] The working medium first enters the filter box 4 through the inlet pipe 2, and then flows through the coarse filter screen 10 (25 μm), the medium filter screen 11 (10 μm) and the fine filter screen 12 (3 μm) of the triple filter screen assembly 7 in sequence: the medium first passes through the coarse filter screen 10 (25 μm) to remove larger particle pollutants; then passes through the through hole of the rectangular partition plate 8 to enter the next stage, and is further filtered through the medium filter screen 11 (10 μm); finally, the ultra-fine filtration is completed through the fine filter screen 12 (3 μm), effectively trapping fine particles to avoid causing wear to the plunger and the sealing element. The three-stage progressive filtration design first intercepts larger particle impurities through the coarse filter screen, and then gradually removes smaller particles through the medium and fine filter screens, so as to ensure that the medium entering the pump body has high cleanliness.

[0037] The particle counter 15 monitors the particle pollution degree of the filtered medium in real time, and feeds back data to the control panel 16. When it is detected that the particle concentration exceeds the standard or the filter screen is blocked, the system can timely give an early warning to prompt the maintenance personnel to replace the filter screen or handle the oil pollution problem, so as to avoid the performance decline of the pump caused by filtration failure. The filter box 4 is fastened and connected with the inlet pipe 2 through the connecting head 5 and the connecting bolt 6, the H-shaped annular rubber pad 18 ensures the high-pressure sealing property of the connecting position, and prevents the medium from leaking; the side rubber pad 13 and the locking bolt 14 ensure the installation stability and sealing effect of each filter screen, and avoid bypassing the unfiltered medium.

[0038] The above only describes the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A low pulse high pressure multi-plunger constant flow pump comprising a multi-plunger constant flow pump body (1), characterized in that, The multi-plunger constant flow pump body (1) is provided with a liquid inlet pipe (2), and the liquid inlet pipe (2) is provided with a multiple filtering mechanism (3), and the multiple filtering mechanism (3) comprises: A filter box (4) is provided with a connecting head (5) at one end, the connecting head (5) is provided with a connecting bolt (6), and the filter box (4) is provided with a triple filter screen assembly (7). The connecting bolt (6) is used for connecting with the liquid inlet pipe (2), and the triple filter screen assembly (7) is used for filtering particles in the multiple filtering medium.

2. A low pulse high pressure multi-plunger constant flow pump according to claim 1, wherein, The triple filter screen assembly (7) comprises a rectangular partition plate (8), a mounting port (9), a coarse filter screen (10), a medium filter screen (11), a fine filter screen (12), a side rubber pad (13), a locking bolt (14) and a particle counter (15), the rectangular partition plate (8) is fixedly arranged in the filter box (4), the mounting port (9) is arranged at the top of the filter box (4), the coarse filter screen (10), the medium filter screen (11) and the fine filter screen (12) are arranged in the mounting port (9), the side rubber pad (13) is arranged outside the coarse filter screen (10), the medium filter screen (11) and the fine filter screen (12), the locking bolt (14) is arranged at the top of the coarse filter screen (10), the medium filter screen (11) and the fine filter screen (12), and the particle counter (15) is fixedly arranged at the top of the filter box (4).

3. A low pulse high pressure multi-plunger constant flow pump according to claim 2, wherein, A through hole is formed in the outer wall of the rectangular partition plate (8), and the coarse filter screen (10), the medium filter screen (11) and the fine filter screen (12) are arranged on one side of the rectangular partition plate (8).

4. A low pulse high pressure multi-plunger constant flow pump according to claim 2, characterized in that, The filtering precision of the coarse filter screen (10) is 25μm, the filtering precision of the medium filter screen (11) is 10μm, and the filtering precision of the fine filter screen (12) is 3μm.

5. A low pulse high pressure multi-plunger constant flow pump as claimed in claim 1, wherein, The outer side of the filter box (4) is provided with a control panel (16).

6. A low pulse high pressure multi-plunger constant flow pump as claimed in claim 1, wherein, The connecting head (5) is provided with a concave groove (17) in the shape of a convex character, and the concave groove (17) is provided with a ring-shaped rubber pad (18) in the shape of H.

Images