Slide block slideway friction force test system of plunger pump

Abstract

The invention relates to the technical field of pump detection equipment, in particular to a sliding block slideway friction force test system of a plunger pump, which comprises a base, a driving device and a test tool. The testing tool comprises a box body, a sealing body and a pump head body which are connected in sequence, and a sealing cavity is formed in the sealing body; a sliding way is arranged in the box body, a movable sliding block is arranged in the sliding way, and the driving device is connected with the other end of the sliding block. A movable plunger is arranged in the pump head body, and one end of the plunger is connected with one end of the sliding block; the force sensor is arranged on the box body, and the sensing end of the force sensor extends to the contact face of the sliding block and the sliding way. According to the invention, the friction force between the slide block and the slide way in the plunger pump is tested, and the detection accuracy is high; static friction force and sliding friction force between the sliding block and the slideway can be detected through the force sensor; the box body, the sealing body and the pump head body are used for sealing the internal plunger pump, and friction force detection can be carried out under complex working conditions.

Description

Technical Field

[0001] The invention relates to the technical field of pump detection equipment, and in particular to a slider slideway friction force testing system for a plunger pump. Background Art

[0002] Reciprocating piston pumps are widely used in energy, chemical, pharmaceutical and water treatment fields due to their high-pressure delivery, high flow control accuracy and high reliability. Reciprocating piston pumps change the volume of the pump chamber by controlling the horizontal reciprocating motion of the crosshead plunger to achieve the suction and discharge process. Under actual working conditions, the service life of reciprocating piston pumps is often reduced due to friction and wear between the slide and the slider, which affects the performance of the pump and increases the maintenance cost of the equipment. Friction and wear are often closely related to the friction of the kinematic pair. Therefore, studying the friction of the slide and slider of the reciprocating pump is of great significance to reducing the friction and wear of the pump and improving the operating stability of the product.

[0003] In the related art, friction and wear tests are mostly conducted on the crank slider mechanism, which is a fault simulation test device, not a test device for the friction of the plunger pump slide slider, and does not consider the complex working conditions of the reciprocating plunger pump system, resulting in poor accuracy of the test results. Summary of the invention

[0004] The invention provides a sliding block slideway friction force testing system of a plunger pump, which is used to solve the defect of poor test result accuracy of the friction force testing system in the prior art.

[0005] The present invention provides a plunger pump slider slide friction test system, comprising: a base, a driving device and a testing tool, wherein the driving device and the testing tool are both arranged on the base; The test fixture comprises: a box body, a sealing body, a pump head body and a force sensor, wherein the box body, the sealing body and the pump head body are connected in sequence, and a sealed chamber is formed in the sealing body; The box body is provided with a slideway, a movable slider is provided in the slideway, one end of the slider extends toward the sealing body and at least partially extends into the sealing chamber, and the driving device is connected to the other end of the slider; A movable plunger is arranged in the pump head body, one end of the plunger is connected to one end of the slider and at least partially extends into the sealed chamber; The force sensor is arranged on the box body, and the sensing end of the force sensor extends to the contact surface between the slider and the slideway.

[0006] According to the slider slide friction force testing system of the plunger pump provided by the present invention, a plurality of force sensors are provided, and at least one of the force sensors is fixed between the sealing body and the box body and is located at one end of the slide, and at least one of the force sensors is fixed inside the box body and is located at the other end of the slide.

[0007] The slider slideway friction force testing system of the plunger pump provided by the present invention further includes: a liquid suction valve and a liquid discharge valve; A suction channel and a discharge channel are formed in the pump head body, and the suction channel and the discharge channel are respectively arranged on opposite sides of the plunger and connected to the other end of the plunger; the suction valve is arranged in the suction channel, and the discharge valve is arranged in the discharge channel.

[0008] According to the plunger pump slider slideway friction force testing system provided by the present invention, the driving device comprises: A motor, arranged on the base; A coupling connected to the output shaft of the motor; A crankshaft connecting rod mechanism is arranged in the box body, and one end of the crankshaft connecting rod mechanism is connected to the coupling, and the other end of the crankshaft connecting rod mechanism is connected to one end of the slider.

[0009] According to the plunger pump slider slideway friction force testing system provided by the present invention, the driving device also includes: A bearing assembly, wherein the housing is provided with an end cover, the bearing assembly is arranged on the end cover, and the crankshaft connecting rod mechanism is supported by the bearing assembly; A connecting rod pin has one end connected to the other end of the crankshaft connecting rod mechanism, and the other end extends into the slideway and is connected to one end of the slider.

[0010] According to the plunger pump slider slide friction force testing system provided by the present invention, a detachable first cover is provided on the box body, a first chamber for accommodating the crankshaft connecting rod mechanism is formed in the box body, and the first cover is arranged close to the first chamber.

[0011] According to the slider slide friction force testing system of the plunger pump provided by the present invention, the bearing assembly includes: a bearing and a bearing seat, the bearing seat is arranged on the end cover, the bearing is arranged on the bearing seat, and one end of the crankshaft connecting rod mechanism is supported by the bearing.

[0012] The slider slideway friction force testing system of the plunger pump provided by the present invention also includes: A slider seal, wherein the inner wall of the sealing chamber is formed with a first assembly groove, the slider seal is embedded in the first assembly groove and is sealed and connected to the outer wall of the slider; A plunger seal, wherein the inner wall of the sealing chamber is formed with a second assembly groove, the plunger seal is embedded in the second assembly groove and is sealed and connected to the outer wall of the plunger.

[0013] The slider slide friction force testing system of the plunger pump provided by the present invention also includes: a plunger guide ring, the inner wall of the sealing chamber is formed with a third assembly groove, the plunger guide ring is embedded in the third assembly groove and contacts with the outer side of the plunger.

[0014] According to the slider slide friction force testing system of the plunger pump provided by the present invention, a detachable second cover body is provided on the box body, a second chamber for accommodating the slideway is formed in the box body, the slideway is detachably arranged in the second chamber, and the second cover body is arranged close to the second chamber.

[0015] The present invention provides a plunger pump slider slide friction force testing system, which includes: a base, a driving device and a testing fixture. The driving device and the testing fixture are both arranged on the base. The testing fixture includes: a box body, a sealing body, a pump head body and a force sensor, the box body, the sealing body and the pump head body are connected in sequence, and a sealed chamber is formed in the sealing body; a slideway is provided in the box body, a movable slider is provided in the slideway, one end of the slider extends toward the sealing body and at least partially extends into the sealed chamber, and the driving device is connected to the other end of the slider; a movable plunger is provided in the pump head body, one end of the plunger is connected to one end of the slider and at least partially extends into the sealed chamber; the force sensor is provided in the box body, and the sensing end of the force sensor extends to the contact surface of the slider and the slideway. The present invention provides a plunger pump slider slide friction test system, which tests the friction between the slider and the slide in the plunger pump with high detection accuracy; the static friction between the slider and the slide can be detected by a force sensor, and if it is combined with a started driving device, the sliding friction between the slider and the slide can be detected; the internal plunger pump is sealed by a box body, a sealing body and a pump head body, so that friction detection can be performed under complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of a slider slideway friction force testing system for a plunger pump provided in one embodiment of the present invention.

[0018] Figure 2It is a schematic diagram of the overall structure of a test tool provided in one embodiment of the present invention.

[0019] Figure 3 It is a schematic diagram of the internal structure of a test tool provided in one embodiment of the present invention.

[0020] Reference numerals: 1: base; 2: motor; 3: coupling; 4: test fixture; 5: housing; 6: sealing body; 7: pump head body; 8: end cover; 9: bearing seat; 10: second cover body; 11: first cover body; 12: bearing; 13: crankshaft; 14: connecting rod; 15: connecting rod pin; 16: slider; 17: plunger; 18: front three-dimensional force sensor; 19: slideway; 20: rear three-dimensional force sensor; 21: slider seal; 22: plunger guide ring; 23: plunger seal; 24: suction valve; 25: discharge valve. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. 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.

[0022] In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present embodiment.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this embodiment, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] In this embodiment, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0025] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] Combine the following Figure 1-Figure 3 The present invention describes a plunger pump slider slide friction force testing system. The plunger pump slider slide friction force testing system comprises: a base 1, a driving device and a testing fixture 4. The driving device and the testing fixture 4 are both arranged on the base 1.

[0027] Among them, the test tooling 4 includes: a box body 5, a sealing body 6, a pump head body 7 and a force sensor. The box body 5, the sealing body 6 and the pump head body 7 are connected in sequence, and a sealed chamber is formed in the sealing body 6; a slideway 19 is provided in the box body 5, and a movable slider 16 is provided in the slideway 19, one end of the slider 16 extends toward the sealing body 6 and at least partially extends into the sealed chamber, and the driving device is connected to the other end of the slider 16; a movable plunger 17 is provided in the pump head body 7, one end of the plunger 17 is connected to one end of the slider 16 and at least partially extends into the sealed chamber; the force sensor is arranged in the box body 5, and the sensing end of the force sensor extends to the contact surface of the slider 16 and the slideway 19.

[0028] Specifically, the base 1 serves as a supporting and fixing component of the entire system and is used to install the driving device and the test fixture 4. The driving device provides power for the movement of the slider 16 in the test fixture 4, driving the slider 16 to slide in the slideway 19. The plunger pump to be tested is installed inside the test fixture 4, which mainly includes structures such as a plunger 17, a slider 16 and a slideway 19, and also has a suction channel for conveying hydraulic pressure and a discharge channel for discharging liquid.

[0029] The present invention provides a plunger pump slider slide friction force testing system, which is mainly used to test the friction force of the slider 16 in the plunger pump when it slides in the slide 19. The test tool 4 is composed of a box body 5, a sealing body 6, a pump head body 7 and a force sensor. Among them, the driving device can use the motor 2 as the power source, and use a transmission mechanism to transmit the power to the box body 5, preferably using a crankshaft connecting rod mechanism to transmit the power. After the power is input into the box body 5, the slider 16 in the slide 19 is driven to slide along the direction of the slide 19. During the sliding process of the slider 16, the friction between the slider 16 and the slide 19 is tested by the force sensor.

[0030] The box body 5, the sealing body 6 and the pump head body 7 are connected in sequence, providing a test space for the friction test of the slideway and the slider, which are respectively used to accommodate the transmission mechanism, the slideway 19, the slider 16 and the plunger 17 and other components, that is, the transmission mechanism and the main structure of the plunger pump are placed in the test fixture 4, and the force sensor is arranged on the outside and / or inside of the box body 5, and the friction between the slider 16 and the slideway 19 is tested by the force sensor. On the one hand, it provides a space for accommodating the slideway 19 and the slider 16, which is isolated from the external environment; on the other hand, it provides a test environment and can perform a friction test between the slider 16 and the slideway 19.

[0031] Furthermore, a hollow sealed chamber is formed in the sealing body 6 for detachably installing the slideway 19. During the test, the slideway 19 is installed in the sealed chamber and secured; after the test, the slideway 19 can be removed from the sealed chamber to perform other friction tests on the slideways of the sliders. In addition, the detachable installation of the slideway 19 can meet the needs of multiple slider slideway friction tests, and multiple repeated tests can be performed to improve the test accuracy.

[0032] Preferably, the force sensor can be a three-dimensional force sensor, which is a device that can simultaneously measure forces in three mutually perpendicular directions, which are usually the X, Y and Z axes defined in a Cartesian coordinate system. In the case of detecting the friction force of the slider and the slideway, it is necessary to ensure that the three-dimensional force sensor can measure the horizontal force generated by the relative movement between the slider 16 and the slideway 19, so it is necessary to extend the three-dimensional force sensor to the contact surface between the slider 16 and the slideway 19. In addition, the three-dimensional force sensor can also detect the forces in other directions of the movement of the slider 16, so as to comprehensively judge the friction force.

[0033] When using a 3D force sensor to detect the friction of a slider, the following points need to be considered: 1. Installation position: Make sure the 3D force sensor is installed correctly and its sensitive axis is aligned with the expected friction force direction. For example, if you want to measure the sliding friction between the slider slides, the sensor should be installed near the contact surface and its sensitive axis should be parallel to the contact surface.

[0034] 2. Calibration: It is very important to calibrate the sensor before use to ensure that it can accurately measure force. This may include temperature compensation and other environmental factors. Therefore, consider installing the 3D force sensor close to the box 5 and the seal 6.

[0035] 3. Distinguish between static friction and dynamic friction: static friction occurs before two surfaces start to move relative to each other, while dynamic friction occurs after they have already slid relative to each other. These two types of friction may be different, so it is important to distinguish and measure them separately in the experiment. In this friction test system, due to the introduction of a drive device, when the drive device stops running, the static friction between the slider 16 and the slideway 19 can be detected; when the drive device is driving, the sliding friction between the slider 16 and the slideway 19 can be detected.

[0036] 4. External influences: Considering that other external forces (such as gravity or applied normal force) may affect the friction force measurement results, it is necessary to control these variables as much as possible or take them into account through appropriate experimental design. Therefore, consider installing the slider 16 and the slideway 19 of the plunger pump inside the sealed box 5 and the sealing body 6 to avoid external influences.

[0037] 5. Material properties: Different materials have different friction coefficients, which directly affects the measured friction force. Understanding the material properties of the contact surface helps to interpret the measurement results. After the test is completed, the materials of the slider 16 and the slideway 19 can be analyzed and combined with the test results for data analysis.

[0038] 6. Measurement under dynamic conditions: If the friction force is measured under dynamic conditions, such as on a moving part, then the effect of speed change on the friction force needs to be considered. In this embodiment, the speed of the slider 16 is controlled by the driving device, so the sliding speed of the slider 16 can be controlled by adjusting the operating power of the driving device.

[0039] The present invention provides a slider slide friction force testing system for a plunger pump, which comprises: a base 1, a driving device and a testing fixture 4. The driving device and the testing fixture 4 are both arranged on the base 1. The testing fixture 4 comprises: a box body 5, a sealing body 6, a pump head body 7 and a force sensor, wherein the box body 5, the sealing body 6 and the pump head body 7 are connected in sequence, and a sealed chamber is formed in the sealing body 6; a slideway 19 is arranged in the box body 5, a movable slider 16 is arranged in the slideway 19, one end of the slider 16 extends toward the sealing body 6 and at least partially extends into the sealed chamber, and the driving device is connected to the other end of the slider 16; a movable plunger 17 is arranged in the pump head body 7, one end of the plunger 17 is connected to one end of the slider 16 and at least partially extends into the sealed chamber; the force sensor is arranged in the box body 5, and the sensing end of the force sensor extends to the contact surface between the slider 16 and the slideway 19. The present invention provides a plunger pump slider slide friction force testing system, which tests the friction force between the slider 16 and the slide 19 in the plunger pump with high detection accuracy; the static friction force between the slider 16 and the slide 19 can be detected by a force sensor, and if it is matched with a started driving device, the sliding friction force between the slider 16 and the slide 19 can be detected; the box body 5, the sealing body 6 and the pump head body 7 are used to seal the internal plunger pump, so that friction force detection can be performed under complex working conditions.

[0040] In one embodiment of the present invention, multiple force sensors are provided, and at least one force sensor is fixed between the sealing body 6 and the box body 5 and located at one end of the slideway 19, and at least one force sensor is fixed inside the box body 5 and located at the other end of the slideway 19. In this embodiment, at least two force sensors are provided, and the friction force at different positions between the slider 16 and the slideway 19 can be detected, and the final test results can be obtained by comprehensive analysis of the data after the detection, thereby improving the test accuracy. Specifically, if Figure 1 In the structure shown, two force sensors are arranged, namely a front three-dimensional force sensor 18 and a rear three-dimensional force sensor 20 , both of which are three-dimensional force sensors, and are arranged at the front and rear ends of the slideway 19 respectively.

[0041] In one embodiment of the present invention, the slider slide friction force test system of the plunger pump further includes: a suction valve 24 and a discharge valve 25. A suction channel and a discharge channel are formed in the pump head body 7, and the suction channel and the discharge channel are respectively arranged on opposite sides of the plunger 17 and communicated with the other end of the plunger 17; the suction valve 24 is arranged in the suction channel, and the discharge valve 25 is arranged in the discharge channel. In the plunger pump in this embodiment, a suction channel and a discharge channel are provided, and the suction valve 24 and the discharge valve 25 are configured accordingly. Specifically, the working medium is transported to the pump head through the suction channel, and the suction valve 24 is used to control the suction flow rate, so that the pump head moves, the working medium is discharged through the discharge channel, and the discharge flow rate is controlled by the discharge valve 25. It can be understood that during the friction force test, the suction valve 24 and the discharge valve 25 are closed, and there is no liquid inside the suction channel and the discharge channel, and the slider 16 is powered only by the driving device.

[0042] In one embodiment of the present invention, the driving device includes: a motor 2, a coupling 3 and a crankshaft connecting rod mechanism. The motor 2 is arranged on the base 1; the coupling 3 is connected to the output shaft of the motor 2; the crankshaft connecting rod mechanism is arranged in the housing 5, and one end of the crankshaft connecting rod mechanism is connected to the coupling 3, and the other end of the crankshaft connecting rod mechanism is connected to one end of the slider 16. Specifically, the output shaft of the motor 2 is connected to the coupling 3, and the rotational motion is transmitted to the crankshaft 13 in the crankshaft connecting rod mechanism through the coupling 3. The crankshaft 13 drives the connecting rod 14 to perform linear reciprocating motion. The connecting rod 14 is connected to the slider 16, and then drives the slider 16 to move in the slide 19. During the movement of the slider 16, the friction between the slide 19 and the slider 16 is detected in real time by a three-dimensional force sensor.

[0043] In one embodiment of the present invention, the driving device further includes: a bearing assembly and a connecting rod pin 15. Among them, an end cover 8 is provided on the housing 5, the bearing assembly is provided on the end cover 8, and the crankshaft connecting rod mechanism is supported by the bearing assembly; one end of the connecting rod pin 15 is connected to the other end of the crankshaft connecting rod mechanism, and the other end extends into the slideway 19 and is connected to one end of the slider 16. Preferably, the bearing assembly includes: a bearing seat 9 and a bearing 12. Among them, the bearing seat 9 is provided on the end cover 8, the bearing 12 is provided on the bearing seat 9, and one end of the crankshaft connecting rod mechanism is supported by the bearing 12. In this embodiment, one end of the crankshaft 13 in the crankshaft connecting rod mechanism is supported on the end cover 8 through the bearing 12, and the other end extends into the housing 5 and is connected to one end of the connecting rod 14. The other end of the connecting rod 14 is connected to the slider 16 through the connecting rod pin 15, and the connecting rod pin 15 extends into the slideway 19 and ensures that it has no contact with the inner wall of the slideway 19. The above connection method simulates the movement of the slider 16 driven by the plunger 17. It can be understood that the connecting rod pin 15 is located at the end of the slider 16 away from the plunger 17, and the original structure of the plunger 17, the slider 16 and the slideway 19 is not changed. The above crankshaft connecting rod mechanism and connecting rod pin 15 and other parts are detachably installed. On the one hand, the above friction force detection test can be performed, and on the other hand, the original plunger pump structure can be unchanged. It is only necessary to connect the pump head body 7 with the sealing body 6, and insert the slideway 19 into the sealing chamber and the box body 5 accordingly, and connect the connecting rod pin 15 with the slider 16. It can be understood that the pump head body 7 can be detachably connected with the sealing body 6 by bolt fasteners.

[0044] In one embodiment of the present invention, a detachable first cover 11 is provided on the box body 5, a first chamber for accommodating the crankshaft connecting rod mechanism is formed in the box body 5, and the first cover 11 is arranged close to the first chamber. In this embodiment, the first cover 11 on the box body 5 is detachably installed, and can be opened and closed. When the first cover 11 is opened, it faces the first chamber. When the first cover 11 is opened, the crankshaft connecting rod mechanism can be installed or removed; after the installation or removal is completed, the first cover 11 is closed to ensure that the inside of the box body 5 is sealed.

[0045] In one embodiment of the present invention, the slider slide friction force testing system of the plunger pump further includes: a slider seal 21 and a plunger seal 23. Among them, the inner wall of the sealed chamber is formed with a first assembly groove, the slider seal 21 is embedded in the first assembly groove, and is sealed and connected with the outer wall of the slider 16; the inner wall of the sealed chamber is formed with a second assembly groove, the plunger seal 23 is embedded in the second assembly groove, and is sealed and connected with the outer wall of the plunger 17. In this embodiment, by respectively arranging the slider seal 21 and the plunger seal 23 in the first assembly groove and the second assembly groove in the sealed chamber, the sealing of the slider 16 and the plunger 17 during the sliding process is ensured.

[0046] In one embodiment of the present invention, the slider slide friction force testing system of the plunger pump further includes: a plunger seal 23, the inner wall of the sealing chamber is formed with a third assembly groove, the plunger seal 23 is embedded in the third assembly groove, and contacts the outer side of the plunger 17. In this embodiment, by arranging a plunger 17 guide slide in the third assembly groove, under the guiding action of the plunger 17, the positioning and guiding of the plunger 17 during the assembly process are ensured, and the assembly position is ensured to be accurate.

[0047] In one embodiment of the present invention, a removable second cover 10 is provided on the box 5, a second chamber for accommodating a slide 19 is formed in the box 5, the slide 19 is removably arranged in the second chamber, and the second cover 10 is arranged close to the second chamber. In this embodiment, the second cover 10 on the box 5 is removably installed, and can be opened and closed. When the second cover 10 is opened, it faces the second chamber. When the second cover 10 is opened, it is convenient to install or remove the slide 19; after the installation or removal is completed, the second cover 10 is closed to ensure that the inside of the box 5 is sealed.

[0048] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed over multiple units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. Those of ordinary skill in the art may understand and implement the present invention without creative effort.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A plunger pump slider slide friction test system, characterized in that: include: A base (1), a driving device and a testing tool (4), wherein the driving device and the testing tool (4) are both arranged on the base (1); The testing tool (4) comprises: a box body (5), a sealing body (6), a pump head body (7) and a force sensor, wherein the box body (5), the sealing body (6) and the pump head body (7) are connected in sequence, and a sealed chamber is formed in the sealing body (6); A slideway (19) is provided in the box body (5), a movable slider (16) is provided in the slideway (19), one end of the slider (16) extends toward the sealing body (6) and at least partially extends into the sealing chamber, and the driving device is connected to the other end of the slider (16); A movable plunger (17) is arranged in the pump head body (7), one end of the plunger (17) is connected to one end of the slider (16) and at least partially extends into the sealed chamber; The force sensor is arranged on the box body (5), and a sensing end of the force sensor extends to a contact surface between the slider (16) and the slideway (19).

2. The plunger pump slider slide friction force testing system according to claim 1, characterized in that: A plurality of force sensors are provided, and at least one of the force sensors is fixed between the sealing body (6) and the box body (5) and is located at one end of the slideway (19), and at least one of the force sensors is fixed inside the box body (5) and is located at the other end of the slideway (19).

3. The plunger pump slider slide friction force testing system according to claim 1, characterized in that: Also includes: A suction valve (24) and a discharge valve (25); A liquid suction channel and a liquid discharge channel are formed in the pump head body (7), and the liquid suction channel and the liquid discharge channel are respectively arranged on two opposite sides of the plunger (17) and are connected to the other end of the plunger (17); the liquid suction valve (24) is arranged in the liquid suction channel, and the liquid discharge valve (25) is arranged in the liquid discharge channel.

4. The plunger pump slider slide friction force testing system according to claim 1, characterized in that: The driving device comprises: A motor (2) is arranged on the base (1); A coupling (3) connected to the output shaft of the motor (2); A crankshaft connecting rod mechanism is disposed in the housing (5), one end of the crankshaft connecting rod mechanism is connected to the coupling (3), and the other end of the crankshaft connecting rod mechanism is connected to one end of the slider (16).

5. The plunger pump slider slide friction force testing system according to claim 4, characterized in that: The driving device further comprises: A bearing assembly, wherein an end cover (8) is provided on the housing (5), the bearing assembly is arranged on the end cover (8), and the crankshaft connecting rod mechanism is supported by the bearing assembly; A connecting rod pin (15) has one end connected to the other end of the crankshaft connecting rod mechanism, and the other end extends into the slideway (19) and is connected to one end of the slider (16).

6. The slider slide friction force testing system of the plunger pump according to claim 4, characterized in that: A detachable first cover (11) is provided on the box body (5), a first chamber for accommodating the crankshaft connecting rod mechanism is formed in the box body (5), and the first cover (11) is arranged close to the first chamber.

7. The slider slideway friction force testing system of the plunger pump according to claim 5, characterized in that: The bearing assembly comprises: a bearing (12) and a bearing seat (9), wherein the bearing seat (9) is arranged on the end cover (8), the bearing (12) is arranged on the bearing seat (9), and one end of the crankshaft connecting rod mechanism is supported by the bearing (12).

8. The plunger pump slider slide friction force testing system according to claim 1, characterized in that: Also includes: A slider seal (21), wherein the inner wall of the sealing chamber is formed with a first assembly groove, the slider seal (21) is embedded in the first assembly groove and is sealingly connected to the outer wall of the slider (16); A plunger seal (23), wherein the inner wall of the sealing chamber is formed with a second assembly groove, and the plunger seal (23) is embedded in the second assembly groove and is sealedly connected to the outer wall of the plunger (17).

9. The plunger pump slider slide friction force testing system according to claim 1, characterized in that: Also includes: A plunger guide ring (22), wherein a third assembly groove is formed on the inner wall of the sealing chamber, and the plunger guide ring (22) is embedded in the third assembly groove and contacts the outer side of the plunger (17).

10. The slider slideway friction force testing system of a plunger pump according to any one of claims 1 to 9, characterized in that: The box body (5) is provided with a detachable second cover body (10), a second chamber for accommodating the slideway (19) is formed in the box body (5), the slideway (19) is detachably arranged in the second chamber, and the second cover body (10) is arranged close to the second chamber.

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