CN110617192B

CN110617192B - (0-70 Mpa) pressure adjustable tracer plunger pump

Info

Publication number: CN110617192B
Application number: CN201910902200.9A
Authority: CN
Inventors: 姜晶宇; 魏光运; 张虎飞
Original assignee: Tianjin Dagang Oilfield Shengda Technology Co Ltd
Current assignee: Tianjin Dagang Oilfield Shengda Technology Co Ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2021-11-19
Anticipated expiration: 2039-09-24
Also published as: CN110617192A

Abstract

The invention relates to the technical field of oilfield exploitation, in particular to a (0-70 Mpa) pressure-adjustable tracer plunger pump, which comprises a base, a pressure-adjustable plunger pump, a pressure indicator and a pressure regulating valve, wherein the right side of the upper end surface of the base is fixedly connected with the pressure-adjustable plunger pump, the upper end surface of the pressure-adjustable plunger pump is fixedly connected with the pressure regulating valve and the pressure indicator which are distributed leftwards and rightwards, the left end surface of the pressure-adjustable plunger pump is fixedly connected with an input cylinder, the left end surface of the input cylinder is fixedly connected with a connecting device, the left end surface of the connecting device is fixedly connected with a connecting pipe, and the other end of the connecting pipe is communicated with a filtering device; according to the invention, through the connecting device, the rotating cylinder and the sealing ring, the rotating cylinder extrudes the connecting ring through the spiral connection of the rotating cylinder and the rotating pipe, and then the connecting ring has good sealing property under the action of the sealing ring and the rubber pad, and the connecting ring is not easy to extrude and damage, so that the normal pressure intensity is ensured, and the normal use of the plunger pump is ensured.

Description

(0-70 Mpa) pressure adjustable tracer plunger pump

Technical Field

The invention relates to the technical field of oilfield exploitation, in particular to a tracer plunger pump with adjustable (0-70 Mpa) pressure.

Background

The plunger pump is an important device of a hydraulic system, changes the volume of a sealed working cavity to absorb and press oil by means of reciprocating motion of a plunger in a cylinder body, has the advantages of high rated pressure, compact structure, high efficiency, convenience in flow regulation and the like, and is widely applied to occasions where high pressure, large flow and flow need to be regulated, such as hydraulic machines, engineering machinery and ships.

In the process of oil well development, after the oil field enters the middle and later development oil extraction stage, the pressure of an oil layer is generally kept by adopting a mode of injecting water into the stratum so as to achieve the purpose of improving the final recovery ratio, in the mode, the situation of air leakage and air leakage often occurs at the joint of a plunger pump and the outside, so that the pressure is reduced, substances in a water tank and a material tank cannot be pumped out in time, water in the existing water tank cannot be filtered, a large amount of solid impurities are inevitably generated after long-time use, the impurities are very likely to influence the normal use of mechanical parts such as the plunger pump, a one-way valve and the like, meanwhile, in order to obtain the injection condition information of an interval and a small layer, the water injection effect of a water injection well is measured and analyzed by adopting a tracer method in the prior art, a tracer injection device is connected to a water injection pipeline in parallel, and the tracer is injected into the stratum by adopting a water injection and shunt mode, the disadvantage of this injection method is that it is not known exactly whether the tracer is injected into the formation at all, and therefore a (0-70 Mpa) pressure adjustable tracer plunger pump is proposed to address the above problems.

Disclosure of Invention

The invention aims to provide a (0-70 MPa) pressure adjustable tracer plunger pump to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

(0-70 Mpa) pressure-adjustable tracer plunger pump, which comprises a base, a pressure-adjustable plunger pump, a pressure indicator and a pressure regulating valve, wherein the pressure-adjustable plunger pump is fixedly connected to the right side of the upper end surface of the base, the pressure-adjustable plunger pump is fixedly connected to the upper end surface of the pressure-adjustable plunger pump, the pressure regulating valve and the pressure indicator are distributed left and right, the left end surface of the pressure-adjustable plunger pump is fixedly connected with an input cylinder, the left end surface of the input cylinder is fixedly connected with a connecting device, the left end surface of the connecting device is fixedly connected with a connecting pipe, the other end of the connecting pipe is communicated with a filtering device, the left end surface of the filtering device is communicated with a water pipe, the connecting device comprises a rotating pipe, a connecting ring, a rubber pad and a rotating cylinder, the connecting ring is arranged on the right side inside the rotating pipe, the rubber pad is arranged on the right side of the connecting ring, and the right end surface of the connecting ring is fixedly connected with the input cylinder, the left side of the connecting ring is provided with a rotating cylinder, the left end surface of the rotating cylinder is fixedly connected with a connecting pipe, the filtering device comprises a filtering box, a rotating motor, a rotating shaft and a shifting plate, the lower end surface of the filter box is fixedly connected with the base, the right end surface of the filter box is communicated with the connecting pipe, the left end surface of the filter box is communicated with the material conveying pipe, the right end surface of the filter box is fixedly connected with a rotating motor, the tail end of the main shaft of the rotating motor is fixedly connected with a rotating shaft, the other end of the rotating shaft is rotationally connected with the filter box, the outer side of the filter box is fixedly connected with evenly distributed shifting plates, the other ends of the shifting plates are fixedly connected with scraping plates, a fixed filter screen is arranged below the scraper, the left end surface and the right end surface of the fixed filter screen are fixedly connected with the filter box, a sliding filter screen is arranged in front of the fixed filter screen, and the left end face and the right end face of the sliding filter screen are connected with the filter box in a sliding mode.

Preferably, the lower end surface of the filtering device is fixedly connected with the base, and the upper end surface of the connecting pipe is communicated with a material conveying pipe.

Preferably, an annular groove is formed in the left end face of the connecting ring, a sealing ring is arranged in the annular groove, the left end face of the sealing ring is fixedly connected with the rotating cylinder, threads are formed in the outer side of the rotating cylinder, and the rotating cylinder is in threaded connection with the rotating pipe through the threads.

Preferably, a sliding groove is formed in the right side inside the rotating tube, the connecting ring is in sliding connection with the rotating tube through the sliding groove, and the outer diameter of the rubber pad is the same as that of the connecting ring.

Preferably, the upper end face of the sliding filter screen is fixedly connected with a connecting rod, the outer side of the connecting rod is slidably connected with a limiting plate and a sealing plate which are vertically distributed, the lower end face of the sealing plate is hermetically arranged with the filter box, the upper end face of the limiting plate is slidably connected with a limiting rod, the rear end face of the limiting rod is fixedly connected with a push plate, the upper end face of the connecting rod is fixedly connected with a lifting handle, an expansion spring is arranged on the outer side of the connecting rod, one end of the expansion spring is fixedly connected with the lifting handle, and the other end of the expansion spring is fixedly connected with the limiting plate.

Preferably, the scraper blade is the triangular prism setting, scraper blade length is the same with fixed filter screen length, is located the below the scraper blade and the surface contact of fixed filter screen, fixed filter screen up end and the upper end of slip filter screen all are the arc setting.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, through the connecting device, the rotating pipe, the connecting ring, the rubber pad, the rotating cylinder and the sealing ring, the rotating cylinder extrudes the connecting ring through the spiral connection of the rotating cylinder and the rotating pipe, and then has good sealing performance under the action of the sealing ring and the rubber pad, the connecting ring is not easy to extrude and damage, the normal pressure intensity is ensured, and the normal use of the plunger pump is ensured;

2. according to the invention, through the arrangement of the filter box, the rotating motor, the rotating shaft, the shifting plate, the scraper and the fixed filter screen, the water in the water tank can be filtered, the quality of the water is ensured, the influence of solid impurities in the water on the normal operation of the machine is avoided, the solid impurities in the fixed filter screen can be hung by the scraper, the filter screen is prevented from being blocked, the normal flow of a water source is ensured, and the practical value is good;

3. according to the invention, through the lifting handle, the telescopic spring, the sealing plate, the limiting rod and the push plate, when solid impurities are scraped off by the scraper and fall into the sliding filter screen, the solid impurities on the sliding filter screen are more, the weight is increased, the telescopic spring is compressed, so that the limiting plate is further compressed, and after the compression spring is compressed to a certain degree, the solid impurities can be taken out by pulling the lifting handle upwards, so that the machine does not need to be stopped for maintenance, the time is saved, and the practical value is good;

4. in the invention, the pressure-adjustable plunger pump is communicated with the water tank, the feed box and the tracer injection device to generate certain pressure, so that the tracer has enough pressure and is injected into the water injection well through a pipeline to reach a target layer.

Drawings

FIG. 1 is a schematic view of an installation structure of a pressure adjustable plunger pump according to the present invention;

FIG. 2 is a schematic view of a connecting device according to the present invention;

FIG. 3 is a schematic view of the structure of the filtering apparatus of the present invention;

FIG. 4 is a flow chart illustrating the operation of the pressure adjustable plunger pump of FIG. 1 according to the present invention;

fig. 5 is a schematic view of the structure of the connection ring of the present invention.

In the figure: 1-base, 2-pressure adjustable plunger pump, 3-pressure indicator, 4-pressure regulating valve, 5-input cylinder, 6-connecting device, 601-rotating pipe, 602-connecting ring, 603-rubber pad, 604-rotating cylinder, 605-sealing ring, 7-connecting pipe, 8-filtering device, 801-filtering box, 802-rotating motor, 803-rotating shaft, 804-shifting plate, 805-scraping plate, 806-fixed filtering net, 807-sliding filtering net, 808-connecting rod, 809-lifting handle, 810-expansion spring, 811-sealing plate, 812-limiting plate, 813-limiting rod, 814-pushing plate, 9-conveying pipe, 10-water pipe and 11-output cylinder.

Detailed Description

Example 1:

referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the present invention provides a technical solution:

the pressure-adjustable tracer plunger pump comprises a base 1, a pressure-adjustable plunger pump 2, a pressure indicator 3 and a pressure regulating valve 4, wherein the pressure-adjustable plunger pump 2 is fixedly connected to the right side of the upper end surface of the base 1, the pressure regulating valve 4 and the pressure indicator 3 which are distributed left and right are fixedly connected to the upper end surface of the pressure-adjustable plunger pump 2, the pressure indicating table 3 can clearly see the pressure intensity in the pump body, the pressure intensity in the pump body can be regulated through the pressure regulating valve 4, the left end surface of the pressure-adjustable plunger pump 2 is fixedly connected with an input cylinder 5, the left end surface of the input cylinder 5 is fixedly connected with a connecting device 6, the connecting device 6 comprises a rotating pipe 601, a connecting ring 602, a rubber pad 603 and a rotating cylinder 604, the connecting ring 602 is arranged on the right side inside the rotating pipe 601, the rubber pad 603 is arranged on the right side of the connecting ring 602, the right end surface of the connecting ring 602 is fixedly connected with the input cylinder 5, the rotating cylinder 604 is arranged on the left side of the connecting ring 602, the arrangement is convenient for device connection, saves a large amount of time, and has excellent sealing effect, the left end surface of a rotary cylinder 604 is fixedly connected with a connecting pipe 7, the left end surface of a connecting ring 602 is provided with an annular groove, a sealing ring 605 is arranged in the annular groove, the left end surface of the sealing ring 605 is fixedly connected with the rotary cylinder 604, the arrangement of the sealing ring 605 ensures that the rotary cylinder 604 has good sealing performance and avoids the condition of air leakage, the outer side of the rotary cylinder 604 is provided with a thread, the rotary cylinder 604 is spirally connected with the rotary pipe 601 through the thread, the right side in the rotary pipe 601 is provided with a sliding groove, the connecting ring 602 is slidably connected with the rotary pipe 601 through the sliding groove, the outer diameter of a rubber pad 603 is the same as the outer diameter of the connecting ring 602, the rubber pad 603 starts the buffer sealing function, the left end surface of a connecting pipe 7 is fixedly connected with the connecting pipe 7, the other end of the connecting pipe 7 is communicated with a filtering device 8, and the left end surface of the filtering device 8 is communicated with a water pipe 10, the lower end face of a filtering device 8 is fixedly connected with a base 1, the upper end face of a connecting pipe 7 is communicated with a material conveying pipe 9, the arrangement is convenient for blanking of a material box, the filtering device 8 comprises a filtering box 801, a rotating motor 802, a rotating shaft 803 and a shifting plate 804, the lower end face of the filtering box 801 is fixedly connected with the base 1, the right end face of the filtering box 801 is communicated with the connecting pipe 7, the left end face of the filtering box 801 is communicated with the material conveying pipe 9, the right end face of the filtering box 801 is fixedly connected with the rotating motor 802, the rotating motor 802 drives the rotating shaft 803 to rotate to achieve the purpose of power output, the tail end of a main shaft of the rotating motor 802 is fixedly connected with the rotating shaft 803, the other end of the rotating shaft 803 is rotatably connected with the filtering box 801, the shifting plate 804 which is uniformly distributed is fixedly connected with the outer side of the filtering box 801, the shifting plate 804 drives a scraper 805 to clean solid impurities on the inner side of the fixed filter screen 806 to avoid blocking the fixed filter screen, and the scraper 806 is fixedly connected with the scraper 805 at the other end of the shifting plate 804, the scraping plates 805 are arranged in a triangular prism shape, so that solid impurities on the inner side of the fixed filter screen 806 can be scraped into the sliding filter screen 807, the fixed filter screen 806 can achieve a good filtering effect, the length of the scraping plates 805 is the same as that of the fixed filter screen 806, the solid impurities can be completely scraped by the arrangement, the scraping plates 805 on the lower portion are in surface contact with the fixed filter screen 806, the upper end surfaces of the fixed filter screen 806 and the sliding filter screen 807 are arranged in an arc shape, the arrangement is convenient for the scraping plates 805 to scrape the solid impurities, the fixed filter screen 806 is arranged below the scraping plates 805, the left end surface and the right end surface of the fixed filter screen 806 are fixedly connected with the filter box 801, the sliding filter screen 807 is arranged in front of the fixed filter screen 806, the left end surface and the right end surface of the sliding filter screen 807 are in sliding connection with the filter box 801, the connecting rods 808 are fixedly connected with the upper end surface of the sliding filter screen 807, and the connecting rods 808 are arranged to play a connecting role, make things convenient for it to carry and pull handle 809 upwards to stimulate it, connecting rod 808 outside sliding connection has limiting plate 812 and closing plate 811 that distributes about being, the terminal surface is sealed setting with rose box 801 under the closing plate 811, limiting plate 812 up end sliding connection has gag lever post 813, gag lever post 813 rear end face fixedly connected with push pedal 814, gag lever post 813 can be fine pushes down limiting plate 812, avoid it because solid impurity and perk, connecting rod 808 up end fixedly connected with carries and pulls handle 809, the connecting rod 808 outside is equipped with expanding spring 810, expanding spring 810 one end and carry and pull handle 809 fixed connection, and expanding spring 810 sets up and makes things convenient for people to observe how much of solid impurity, make things convenient for people in time to judge, guarantee in time to clear up solid impurity, the expanding spring 810 other end and limiting plate 812 fixed connection.

The model of the pressure adjustable plunger pump 2 is 3DK-70, the model of the pressure indicator 3 is ZC-3000-4, and the model of the rotating motor 802 is YS motor.

The working process is as follows: when in use, the power supply is connected, the water tank and the material tank are connected with the low-pressure inlet of the pressure-adjustable plunger pump 2, the inlet of the tracer injection device is connected with the high-pressure outlet of the pressure-adjustable plunger pump 2, the outlet of the tracer injection device is connected with the water injection well through a pipeline, the water tank provides injection liquid, the material tank provides trace element tracer solution, the diesel engine unit provides power for the pressure-adjustable plunger pump 2, the tracer injection device contains the isotope tracer, the output cylinder 11 of the pressure-adjustable plunger pump 2 is provided with a one-way valve, the tracer can only be injected into the well through the pipeline through the one-way valve, after the technical scheme is used, the pressure-adjustable plunger pump 2 is communicated with the water tank, the material tank and the tracer injection device to generate certain pressure, so that the tracer has enough pressure and can be injected into the water injection well through the pipeline to reach a target layer, compared with the prior art, the tracer can be definitely confirmed to be completely injected into the stratum, the accuracy of the tracer method measurement is ensured, the pressure indication table 3 can clearly see the pressure intensity in the pump body, the pressure intensity in the pump body can be adjusted through the pressure adjusting valve 4, when the pressure adjustable plunger pump 2 is connected, the rotating cylinder 604 is rotated and is in spiral connection with the rotating pipe 601, the rotating cylinder 604 pushes the sealing ring 605 to move rightwards, the sealing ring 605 is positioned at the inner side of the connecting ring 602, the rotating cylinder 604 presses the connecting ring 602 rightwards, and the connecting ring 602 presses the rubber pad 603 rightwards, the arrangement can enable the rotating cylinder 604, the connecting ring 602 and the rubber pad 603 to be in close contact, thereby realizing sealing, ensuring that the condition of air leakage cannot occur and ensuring that the device is normally used, when water in the water tank passes through the filtering device 8, impurities in the water and the water are filtered when the water passes through the

fixed filtering net

807, and 802 through rotating the motor rotates and drives axis of rotation 803 corotation, axis of rotation 803 rotates and drives group board 804 and scraper blade 805 rotation, thereby the scraper blade 805 can scrape the solid on fixed filter screen 806 surface and fall to sliding filter screen 807, solid impurity collects in sliding filter screen 807, push pedal 814 slides forward, push pedal 814 drives gag lever post 813 and slides forward, thereby make gag lever post 813 extrude limiting plate 812, avoid limiting plate 812 to take place the slope because of the weight of its solid impurity, realize sealed effect simultaneously under the effect of closing plate 811, when expanding spring 810's compression degree is less, can see out that solid impurity is less, need not to clear up.

Example 2:

The working process is as follows: when in use, the power supply is connected, the water tank and the material tank are connected with the low-pressure inlet of the pressure-adjustable plunger pump 2, the inlet of the tracer injection device is connected with the high-pressure outlet of the pressure-adjustable plunger pump 2, the outlet of the tracer injection device is connected with the water injection well through a pipeline, the water tank provides injection liquid, the material tank provides trace element tracer solution, the diesel engine unit provides power for the pressure-adjustable plunger pump 2, the tracer injection device contains the isotope tracer, the output cylinder 11 of the pressure-adjustable plunger pump 2 is provided with a one-way valve, the tracer can only be injected into the well through the pipeline through the one-way valve, after the technical scheme is used, the pressure-adjustable plunger pump 2 is communicated with the water tank, the material tank and the tracer injection device to generate certain pressure, so that the tracer has enough pressure and can be injected into the water injection well through the pipeline to reach a target layer, compared with the prior art, the tracer can be definitely confirmed to be completely injected into the stratum, the accuracy of the tracer method measurement is ensured, the pressure indication table 3 can clearly see the pressure intensity in the pump body, the pressure intensity in the pump body can be adjusted through the pressure adjusting valve 4, when the pressure adjustable plunger pump 2 is connected, the rotating cylinder 604 is rotated and is in spiral connection with the rotating pipe 601, the rotating cylinder 604 pushes the sealing ring 605 to move rightwards, the sealing ring 605 is positioned at the inner side of the connecting ring 602, the rotating cylinder 604 presses the connecting ring 602 rightwards, and the connecting ring 602 presses the rubber pad 603 rightwards, the arrangement can enable the rotating cylinder 604, the connecting ring 602 and the rubber pad 603 to be in close contact, thereby realizing sealing, ensuring that the condition of air leakage cannot occur and ensuring that the device is normally used, when water in the water tank passes through the filtering device 8, impurities in the water and the water are filtered when the water passes through the fixed filtering net 807, the rotation shaft 803 is driven to rotate positively by the rotation of the rotating motor 802, the rotating shaft 803 rotates to drive the shifting plate 804 and the scraping plate 805 to rotate, so that the scraping plate 805 can scrape solid on the surface of the fixed filter screen 806 down into the sliding filter screen 807, the solid impurities are collected in the sliding filter screen 807, the pushing plate 814 slides forwards, the pushing plate 814 drives the limiting rod 813 to slide forwards, the limiting rod 813 extrudes the limiting plate 812, the limiting plate 812 is prevented from inclining due to the weight of the solid impurities, meanwhile, the sealing effect is realized under the action of the sealing plate 811, when the compression degree of the telescopic spring 810 is large, the amount of the solid impurities is large, the limiting rod 813 is pushed backwards, then the lifting handle 809 is pulled, the lifting handle 809 drives the connecting rod 808 to move upwards, the connecting rod 808 drives the sliding filter screen 807 to move upwards, so that the solid impurities are taken out, and meanwhile, the cleaning mode does not need to stop the operation of the machine, the working quality and the working efficiency are ensured.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.

Claims

(0-70 Mpa) adjustable tracer plunger pump of pressure, including base (1), adjustable plunger pump of pressure (2), pressure indicator (3) and pressure regulating valve (4), its characterized in that: the pressure-adjustable plunger pump (2) is fixedly connected to the right side of the upper end face of the base (1), a pressure adjusting valve (4) and a pressure indicating gauge (3) which are distributed leftwards and rightwards are fixedly connected to the upper end face of the pressure-adjustable plunger pump (2), an input cylinder (5) is fixedly connected to the left end face of the pressure-adjustable plunger pump (2), a connecting device (6) is fixedly connected to the left end face of the input cylinder (5), a connecting pipe (7) is fixedly connected to the left end face of the connecting device (6), the other end of the connecting pipe (7) is communicated with a filtering device (8), the left end face of the filtering device (8) is communicated with a water pipe (10), the connecting device (6) comprises a rotating pipe (601), a connecting ring (602), a rubber pad (603) and a rotating cylinder (604), a connecting ring (602) is arranged on the right side of the inside of the rotating pipe (601), and a rubber pad (603) is arranged on the right side of the connecting ring (602), the filter device is characterized in that the right end face of the connecting ring (602) is fixedly connected with the input cylinder (5), the left side of the connecting ring (602) is provided with a rotating cylinder (604), the left end face of the rotating cylinder (604) is fixedly connected with the connecting pipe (7), the filter device (8) comprises a filter box (801), a rotating motor (802), a rotating shaft (803) and a shifting plate (804), the lower end face of the filter box (801) is fixedly connected with the base (1), the right end face of the filter box (801) is communicated with the connecting pipe (7), the left end face of the filter box (801) is communicated with the material conveying pipe (9), the right end face of the filter box (801) is fixedly connected with the rotating motor (802), the tail end of a spindle of the rotating motor (802) is fixedly connected with the rotating shaft (803), the other end of the rotating shaft (803) is rotatably connected with the filter box (801), and the shifting plate (804) which are uniformly distributed are fixedly connected with the outer side of the filter box (801), dial board (804) other end equal fixedly connected with scraper blade (805), scraper blade (805) below is equipped with fixed filter screen (806), terminal surface and rose box (801) fixed connection about fixed filter screen (806), fixed filter screen (806) the place ahead is equipped with slip filter screen (807), terminal surface and rose box (801) sliding connection about slip filter screen (807).
2. The (0-70 Mpa) pressure adjustable tracer plunger pump according to claim 1, characterized in that: the lower end face of the filtering device (8) is fixedly connected with the base (1), and the upper end face of the connecting pipe (7) is communicated with a material conveying pipe (9).
3. The (0-70 Mpa) pressure adjustable tracer plunger pump according to claim 1, characterized in that: an annular groove is formed in the left end face of the connecting ring (602), a sealing ring (605) is arranged in the annular groove, the left end face of the sealing ring (605) is fixedly connected with the rotating cylinder (604), threads are formed in the outer side of the rotating cylinder (604), and the rotating cylinder (604) is in threaded connection with the rotating pipe (601) through the threads.
4. The (0-70 Mpa) pressure adjustable tracer plunger pump according to claim 1, characterized in that: the right side in the rotating pipe (601) is provided with a sliding groove, the connecting ring (602) is in sliding connection with the rotating pipe (601) through the sliding groove, and the outer diameter of the rubber pad (603) is the same as that of the connecting ring (602).
5. The (0-70 Mpa) pressure adjustable tracer plunger pump according to claim 1, characterized in that: sliding filter screen (807) up end fixedly connected with connecting rod (808), connecting rod (808) outside sliding connection has limiting plate (812) and closing plate (811) that are distribution from top to bottom, the terminal surface is sealed setting with rose box (801) under closing plate (811), limiting plate (812) up end sliding connection has gag lever post (813), gag lever post (813) rear end fixedly connected with push pedal (814), handle (809) are carried to connecting rod (808) up end fixedly connected with, the connecting rod (808) outside is equipped with expanding spring (810), expanding spring (810) one end with carry handle (809) fixed connection, expanding spring (810) other end and limiting plate (812) fixed connection.
6. The (0-70 Mpa) pressure adjustable tracer plunger pump according to claim 1, characterized in that: the scraper blade (805) is the triangular prism setting, scraper blade (805) length is the same with fixed filter screen (806) length, is located the below scraper blade (805) and fixed filter screen (806) surface contact, fixed filter screen (806) up end and slip filter screen (807) up end all are the arc setting.