A reciprocating pump based on modular design

Abstract

The purpose of this invention is to solve the technical problems of poor structural flexibility, high manufacturing cost, and low maintenance efficiency in existing technologies, and to provide a reciprocating pump based on modular design; it includes a power end and a hydraulic end; the power end is composed of a base component, a housing, a piston rod, a rotor component, and a reinforcing guard plate component; the hydraulic end is provided with an inlet and an outlet; the housing is formed by a detachable connection of an upper housing cover, a lower housing cover, a left housing cover, a right housing cover, a front housing cover, and a hydraulic end connector; the base component is detachably connected to the bottom of the lower housing cover; the hydraulic end is connected and communicates with the housing through the hydraulic end connector; the rotor component and the reinforcing guard plate component are detachably connected to the front and rear ends of the housing, respectively, and the input end of the rotor component is connected to the drive end of the drive device, and the output end passes through the reinforcing guard plate component and is connected to the front end of the piston rod, with the piston rod and piston channel slidingly sealed together.

Description

Technical Field

[0001] This invention relates to a reciprocating pump, and more specifically to a reciprocating pump based on a modular design. Background Technology

[0002] Reciprocating pumps, widely used in petrochemical, water conservancy, and mining machinery industries, directly impact the continuity and economy of industrial production due to their performance stability, manufacturing cost, and ease of maintenance. Traditional reciprocating pump designs often employ an integrated structure, which presents the following technical drawbacks in practical applications:

[0003] Poor structural flexibility: The integrated design results in a high degree of correlation between the various components of the pump body, making it impossible to quickly adjust the structural parameters according to actual working conditions and insufficient ability to adapt to different pressure and flow scenarios.

[0004] Cost control is difficult: the high proportion of specialized components makes it difficult to achieve standardized mass production, resulting in high manufacturing costs; at the same time, the need to replace the entire equipment when operating conditions change further increases the user's operating costs.

[0005] Low maintenance efficiency: The disassembly process of the integrated structure is cumbersome. When the equipment fails, the entire equipment needs to be returned to the factory for repair, which not only has a long repair cycle and high cost, but also seriously affects the continuity of industrial production. Summary of the Invention

[0006] The purpose of this invention is to solve the technical problems of poor structural flexibility, high manufacturing cost and low maintenance efficiency of existing technologies, and to provide a reciprocating pump based on modular design.

[0007] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0008] A reciprocating pump based on modular design, which is special in that:

[0009] It includes a power end and a hydraulic end; the power end consists of a base component, a housing, a rotor component, a piston rod, and a reinforcing guard plate component; the hydraulic end is provided with a liquid inlet and a liquid outlet;

[0010] The housing is formed by a detachable connection of an upper housing cover, a lower housing cover, a left housing cover, a right housing cover, a front housing cover, and a hydraulic end connector; the base component is detachably connected to the bottom of the lower housing cover; the hydraulic end connector is connected to the hydraulic end, and has a piston channel communicating with the inlet and outlet of the hydraulic end;

[0011] The rotor component and the reinforcing guard plate component are detachably connected to the front and rear of the housing, respectively. The input end of the rotor component is connected to the drive end of the drive device, and the output end can pass through the reinforcing guard plate component and connect to the front end of the piston rod to drive the piston rod to reciprocate along the axial direction. The rear end of the piston rod extends into the hydraulic end from the piston channel, and the piston rod and the piston channel are slidably sealed together. The reinforcing guard plate component is detachably connected to the housing to provide reinforcement to the housing.

[0012] Furthermore, the rotor component includes a rotor, bearings, connecting rods, a cross, and a limiting sleeve;

[0013] The rotor is located inside the housing near the front end, and both ends of the rotor are connected to the left cover and the right cover of the housing respectively via bearings; one end of the rotor serves as the input end of the rotor component, passing through the left cover or the right cover of the housing and connecting to the drive end of the drive device.

[0014] The limiting sleeve is connected between the left cover and the right cover of the box, and a limiting channel is provided in the horizontal direction;

[0015] The front end of the connecting rod is eccentrically hinged to the rotor, and the rear end of the connecting rod is hinged to the front end of the cross; the rear end of the cross serves as the output end of the rotor component and is connected to the front end of the piston rod; the upper and lower ends of the cross are slidably connected to the limiting channel.

[0016] The middle section of the piston rod is slidably connected within the piston channel of the hydraulic end connector, and the rear end of the piston rod extends into the hydraulic end; a sealing element is provided at the connection between the outer circumferential surface of the piston rod and the hydraulic end connector.

[0017] Furthermore, multiple sets of the connecting rod and the cross are provided; the limiting sleeve is provided with multiple limiting channels;

[0018] The upper and lower ends of multiple sets of crosses correspond to and are slidably connected to multiple limiting channels respectively;

[0019] The front ends of multiple sets of connecting rods are staggered and eccentrically hinged to the rotor, and the rear ends of multiple sets of crosses are staggered.

[0020] Multiple piston columns and piston channels are pre-configured, with the middle sections of the multiple piston columns slidably connected within the multiple piston channels, and the front ends of the multiple piston columns being connected to the rear ends of the multiple sets of crosses respectively.

[0021] Furthermore, the reinforced protective plate component includes a housing connecting rod support plate and several stabilizing support plates; the stabilizing support plates are provided with multiple elongated grooves for weight reduction;

[0022] The box body connecting rod support plate is fixedly and detachably connected to the upper cover, lower cover, left cover and right cover of the box body, and has multiple through holes. The rear ends of multiple sets of crosses correspond to the positions of multiple through holes, and can pass through multiple through holes to connect to the front ends of the corresponding multiple piston columns. The size of the through holes is adapted to the rear ends of the crosses.

[0023] The plurality of stabilizing support plates are vertically arranged, and their two ends are detachably connected to the box body connecting rod support plate and the hydraulic end connector, respectively.

[0024] Furthermore, one end of the stabilizing support plate is connected to the box body connecting rod support plate by bolts; the other end of the stabilizing support plate is provided with a positioning plate, which is perpendicular to the box body connecting rod support plate, and the hydraulic end connector is provided with a positioning slot, and the positioning plate is engaged with the positioning slot.

[0025] Furthermore, the hydraulic end includes a strength-reducing fixture and a pump head; after the strength-reducing fixture and the pump head are assembled, they are fixedly connected to the hydraulic end connector by bolts.

[0026] The pump head has multiple liquid inlets on its lower wall and a liquid outlet on the upper part of one side wall of the pump head. The multiple liquid inlets are connected to multiple piston channels through multiple liquid inlet pipes, and the multiple liquid inlet pipes are connected to the liquid outlet through a single liquid outlet pipe. A suction valve is provided at the connection between the liquid inlet pipe and the liquid inlet, and a discharge valve is provided at the connection between the liquid inlet pipe and the liquid outlet pipe.

[0027] Furthermore, the strength-increasing / reducing tooling is provided with multiple positioning blocks;

[0028] Multiple positioning grooves are provided on the contact surface between the pump head and the strength-increasing tooling;

[0029] The positions and sizes of the plurality of positioning blocks correspond to the positions and sizes of the plurality of positioning slots, respectively.

[0030] Furthermore, the strength-increasing tooling adopts a replaceable structure, and the connection strength with the hydraulic end connector can be adjusted by adding or removing reinforcing ribs and increasing or decreasing the plate thickness.

[0031] Furthermore, the surface area of ​​the front cover of the housing is greater than the surface area of ​​the hydraulic end connector;

[0032] The top cover, left cover, and right cover of the box all have a structure that is wider at the front and narrower at the back;

[0033] The box body, consisting of the upper cover, lower cover, left cover, right cover, front cover, and hydraulic end connector, forms a rectangular structure with a gradually decreasing cross-sectional area from front to back.

[0034] Furthermore, the base component includes a first support base and a second support base; the first support base and the second support base are fixedly connected by a connecting rod;

[0035] The top of the first support base is provided with multiple rows of front connection holes for fixed connection with the front end of the lower cover of the box; the bottom is provided with multiple rows of front position fixing holes.

[0036] The top of the second support base is provided with multiple rows of rear connection holes for fixed connection with the rear end of the lower cover of the box; the bottom is provided with multiple rows of rear position fixing holes.

[0037] Compared with the prior art, the present invention has the following advantages:

[0038] (1) The present invention provides a reciprocating pump based on modular design. The modular design allows for the disassembly of the housing, rotor components, and reinforcing guard plate components. This enables the present invention to quickly adjust its structure and replace components according to actual working conditions, adapting to different pressure and flow scenarios. This significantly improves the versatility of the reciprocating pump, reducing the R&D and manufacturing costs of special components. Furthermore, when the reciprocating pump malfunctions, it does not need to be returned to the factory as a whole. Instead, it can be disassembled and repaired or the faulty components can be replaced directly on-site. This greatly shortens the maintenance cycle, improves maintenance efficiency, and ensures production continuity.

[0039] (2) By setting several stable support plates between the housing connecting rod support plate and the hydraulic end connector, the present invention provides stable support for the piston rod and reciprocating pump, improves the structural strength of each component of the reciprocating pump, and significantly improves the operational stability and service life of the reciprocating pump; at the same time, the integrated structure design of the cross can ensure the stability during the power transmission process, reduce the friction between components, and match the entire power end structure, making it convenient for disassembly and maintenance.

[0040] (3) The present invention has multiple long grooves on the stable support plate to reduce weight and optimize the pump head by using a strength adjustment tool to connect the pump head to the hydraulic end connector. The connection strength with the hydraulic end connector can be adjusted according to the actual working conditions by adding or removing reinforcing ribs and thickening the plate, thereby further improving the operating stability of the reciprocating pump. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the overall structure of a reciprocating pump embodiment based on modular design according to the present invention (piston column and right cover of housing not shown).

[0042] Figure 2This is a top view of an embodiment of the present invention (piston column, limiting sleeve, and upper cover of the housing are not shown).

[0043] Figure 3 This is a schematic diagram of the structure of the stabilizing support plate in an embodiment of the present invention;

[0044] Figure 4 This is a front view of the added / reduced strength tooling in an embodiment of the present invention;

[0045] Figure 5 This is a left view of the strength-adding / reducing tooling in an embodiment of the present invention;

[0046] Figure 6 This is a front view of the pump head in an embodiment of the present invention.

[0047] The attached figures are labeled as follows:

[0048] 1-Hydraulic end connector, 2-Rotor, 3-Connecting rod, 4-Cross, 5-Limit sleeve, 6-Connecting rod, 7-Box connecting rod support plate, 8-Stabilizing support plate, 9-Strength-increasing / reducing tooling, 10-Pump head, 11-First support base, 12-Second support base. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] Example 1

[0051] like Figure 1 As shown, this embodiment 1 provides a reciprocating pump based on modular design, including a base component, a housing, a rotor component, a piston rod, a reinforcing guard plate component, a strength-reducing fixture 9, and a pump head 10. The housing has a trapezoidal structure with a gradually decreasing cross-sectional area from front to back. The housing is formed by an upper housing cover, a lower housing cover, a left housing cover, a right housing cover, a front housing cover, and a hydraulic end connector 1, which are then fixedly connected by bolts. The upper housing cover is provided with an observation window for easy observation of the working status of the reciprocating pump. The rotor component and the reinforcing guard plate component are respectively located at the front and rear ends of the housing. The hydraulic end connector 1 is connected to the hydraulic end and has a piston channel communicating with the inlet and outlet of the hydraulic end. The strength-reducing fixture 9 is assembled with the pump head 10 and then fixedly connected to the hydraulic end connector 1 by bolts.

[0052] The rotor assembly includes a rotor 2, bearings, a connecting rod 3, a cross 4, and a limiting sleeve 5. The rotor 2 is located inside the housing near the front end, and both ends of the rotor 2 are connected to the left and right covers of the housing via bearings. One end of the rotor 2 passes through the left or right cover of the housing and connects to the drive end of the drive device. The limiting sleeve 5 is connected to the left and right covers of the housing and has five limiting channels horizontally. Figure 2 As shown, there are five connecting rods 3 and five crosses 4. The front ends of the five connecting rods 3 are eccentrically hinged to the rotor 2, and the rear ends of the five connecting rods 3 are respectively hinged to the front ends of the five crosses 4. The front ends of the five connecting rods 3 are staggered, and the rear ends of the five crosses 4 are staggered. The upper and lower ends of the five crosses 4 correspond to and are slidably connected to the five limiting channels. There are five piston rods and five piston channels. The middle sections of the five piston rods are slidably connected to the five piston channels of the hydraulic end connector, and the front ends of the five piston rods are respectively connected to the rear ends of the five crosses 4. The rear ends of the five piston rods extend into the pump head 10. The piston rods are slidably connected to the piston channels, and a sealing element is provided at the connection between the outer circumference of the piston rod and the hydraulic end connector 1. Figure 6 As shown, the pump head 10 has five liquid inlets on its lower wall and one liquid outlet on the upper part of one side wall. The five liquid inlets are connected to five piston channels through five liquid inlet pipes, and the five liquid inlet pipes are connected to the one liquid outlet through one liquid outlet pipe. A suction valve is provided at the connection between the liquid inlet pipe and the liquid inlet, and a discharge valve is provided at the connection between the liquid inlet pipe and the liquid outlet pipe.

[0053] The reinforced protective plate components include a housing linkage support plate 7 and two stabilizing support plates 8; such as... Figure 3 As shown, the stabilizing support plate 8 has multiple elongated grooves; the box body connecting rod support plate 7 is fixedly connected to the upper cover, lower cover, left cover, and right cover of the box body by bolts, and has five through holes, which correspond to the rear ends of the five crosses 4 respectively, and the through holes are clearance-fitted with the rear ends of the crosses 4; the two stabilizing support plates 8 are vertically arranged, and one end is connected to the box body connecting rod support plate 7 by bolts, and the other end is provided with a positioning plate, which is perpendicular to the box body connecting rod support plate 7, and the hydraulic end connector 1 is provided with a positioning slot, and the positioning plate is engaged with the positioning slot.

[0054] like Figure 4 and Figure 5As shown, the strength-increasing / reducing fixture 9 has five connecting holes corresponding to the five piston channels, and multiple positioning blocks are provided on it. The front of the pump head 10 has multiple positioning grooves corresponding to the positions and sizes of the multiple positioning blocks. The strength-increasing / reducing fixture 9 is positioned and connected by the positioning blocks and the positioning grooves on the pump head 10. The strength-increasing / reducing fixture 9 adopts a replaceable structure, and the connection strength with the hydraulic end connector 1 can be adjusted by adding or removing reinforcing ribs or thickening plates.

[0055] The base components include a first support base 11 and a second support base 12; the first support base 11 and the second support base 12 are fixedly connected by a connecting rod 6; the top of the first support base 11 is provided with multiple rows of front connecting holes for fixed connection with the front end of the lower cover of the box; the bottom is provided with multiple rows of front position fixing holes; the top of the second support base 12 is provided with multiple rows of rear connecting holes for fixed connection with the rear end of the lower cover of the box; the bottom is provided with multiple rows of rear position fixing holes. When the base components do not match the on-site installation surface, the bolt connection positions of the first support base 11 and the second support base 12 can be adjusted, or a base component of the appropriate specification can be directly replaced.

[0056] The working principle of this embodiment is as follows: Due to the eccentric hinge of the connecting rod 3 and the cross 4, when the drive end of the drive device drives the rotor 2 to rotate, the circular motion is converted into the linear reciprocating motion of the cross 4, so that the rear end of the cross 4 drives the piston column to reciprocate along the axial direction, changing the volume and pressure in the pump head 10. With the unidirectional opening and closing of the suction valve and the discharge valve, the suction and discharge of liquid are realized.

[0057] Example 2

[0058] This embodiment 2 provides a reciprocating pump based on modular design, including a base component, a housing, a rotor component, a piston rod, a reinforcing guard plate component, a strength-reducing fixture 9, and a pump head 10. The housing has a trapezoidal structure with a gradually decreasing cross-sectional area from front to back, and is formed by an upper housing cover, a lower housing cover, a left housing cover, a right housing cover, a front housing cover, and a hydraulic end connector 1, which are then fixedly connected by bolts. The upper housing cover is provided with an observation window. The rotor component and the reinforcing guard plate component are respectively located at the front and rear ends of the housing. The hydraulic end connector 1 is connected to the hydraulic end and has a piston channel communicating with the inlet and outlet of the hydraulic end. The strength-reducing fixture 9 is assembled with the pump head 10 and then fixedly connected to the hydraulic end connector 1 by bolts.

[0059] The rotor assembly includes a rotor 2, bearings, connecting rods 3, crosses 4, and limiting sleeves 5. The rotor 2 is located inside the housing near the front end, and both ends of the rotor 2 are connected to the left and right covers of the housing via bearings. One end of the rotor 2 passes through the left or right cover and connects to the drive end of the drive device. The limiting sleeve 5 is connected to the left and right covers of the housing and has two limiting channels horizontally. Two connecting rods 3 and two crosses 4 are provided; the front ends of the two connecting rods 3 are eccentrically hinged to the rotor 2, and the rear ends of the two connecting rods 3 are respectively hinged to the front ends of the two crosses 4. The front ends of the two connecting rods 3 are staggered, and the rear ends of the two crosses 4 are staggered. The upper and lower ends of the two crosses 4 correspond to the two limiting channels respectively. The pistons are slidably connected; two piston columns and two piston channels are provided. The middle sections of the two piston columns are slidably connected to the two piston channels of the hydraulic end connector, and the front ends of the two piston columns are respectively connected to the rear ends of the two crosses 4. The rear ends of the five piston columns extend into the interior of the pump head 10. The piston columns are slidably connected to the piston channels, and a sealing element is provided at the connection between the outer circumference of the piston column and the hydraulic end connector. The upper wall of the pump head 10 has two liquid inlets, and the upper part of one side wall of the pump head 10 has a liquid outlet. The two liquid inlets are respectively connected to the two piston channels through two liquid inlet pipes, and the two liquid inlet pipes are connected to the one liquid outlet through one liquid outlet pipe. A suction valve is provided at the connection between the liquid inlet pipe and the liquid inlet, and a discharge valve is provided at the connection between the liquid inlet pipe and the liquid outlet pipe.

[0060] The reinforced protective plate component includes a housing connecting rod support plate 7 and a stabilizing support plate 8. The housing connecting rod support plate 7 is fixedly connected to the upper cover, lower cover, left cover, and right cover of the housing by bolts, and has two through holes. The two through holes correspond to the rear end positions of the two crosses 4 respectively. The through holes are clearance-fitted with the rear end of the crosses 4, that is, the rear end of each set of crosses 4 is movably connected to the reinforced protective plate component through the two through holes. The stabilizing support plate 8 is vertically arranged, and one end is bolted to the housing connecting rod support plate 7. The other end is provided with a positioning plate, which is perpendicular to the housing connecting rod support plate 7. The hydraulic end connector 1 is provided with a positioning slot, and the positioning plate engages with the positioning slot.

[0061] The strength adjustment tooling 9 has two connecting holes corresponding to the two piston channels respectively, and multiple positioning blocks are provided on it. The front of the pump head 10 has multiple positioning grooves corresponding to the positions and sizes of the multiple positioning blocks. The strength adjustment tooling 9 is positioned and connected by the positioning blocks and the positioning grooves on the pump head 10. The strength adjustment tooling 9 adopts a replaceable structure, and the connection strength with the hydraulic end connector 1 can be adjusted by adding or removing reinforcing ribs or thickening plates.

[0062] The base component includes a first support base 11 and a second support base 12; the first support base 11 and the second support base 12 are fixedly connected by a connecting rod 6; the top of the first support base 11 is provided with multiple rows of front connecting holes for fixed connection with the front end of the lower cover of the box; the bottom is provided with multiple rows of front position fixing holes; the top of the second support base 12 is provided with multiple rows of rear connecting holes for fixed connection with the rear end of the lower cover of the box; the bottom is provided with multiple rows of rear position fixing holes.

[0063] The above are merely embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the scope of the technical solution of the present invention should be included within the protection scope of the present invention. Furthermore, it should be noted that the accompanying drawings are merely illustrative and are not drawn to scale, and should not be construed as limiting the actual scope of protection claimed by the present invention.

Claims

1. A reciprocating pump based on modular design, characterized in that: It includes a power end and a hydraulic end; the power end consists of a base component, a housing, a rotor component, a piston rod, and a reinforcing guard plate component; the hydraulic end is provided with a liquid inlet and a liquid outlet; The housing is formed by a detachable connection of an upper housing cover, a lower housing cover, a left housing cover, a right housing cover, a front housing cover, and a hydraulic end connector (1); the base component is detachably connected to the bottom of the lower housing cover; the hydraulic end connector (1) is connected to the hydraulic end, and has a piston channel that communicates with the inlet and outlet of the hydraulic end; The rotor component and the reinforcing guard plate component are detachably connected to the front and rear of the housing, respectively. The input end of the rotor component is connected to the drive end of the drive device, and the output end can pass through the reinforcing guard plate component and connect to the front end of the piston rod to drive the piston rod to reciprocate along the axial direction. The rear end of the piston rod extends into the hydraulic end from the piston channel, and the piston rod and the piston channel are slidably sealed together. The reinforcing guard plate component is detachably connected to the housing to provide reinforcement to the housing.

2. A reciprocating pump based on modular design according to claim 1, characterized in that: The rotor assembly includes a rotor (2), a bearing, a connecting rod (3), a cross (4), and a limiting sleeve (5). The rotor (2) is located inside the housing near the front end, and the two ends of the rotor (2) are connected to the left cover and the right cover of the housing respectively through bearings; one end of the rotor (2) serves as the input end of the rotor component, and passes through the left cover or the right cover of the housing to connect to the drive end of the drive device. The limiting sleeve (5) is connected between the left cover and the right cover of the box, and a limiting channel is provided in the horizontal direction; The front end of the connecting rod (3) is eccentrically hinged to the rotor (2), and the rear end of the connecting rod (3) is hinged to the front end of the cross (4); the rear end of the cross (4) serves as the output end of the rotor component and is connected to the front end of the piston rod; the upper and lower ends of the cross (4) are slidably connected to the limiting channel. The middle section of the piston rod is slidably connected in the piston channel of the hydraulic end connector (1), and the rear end of the piston rod extends into the hydraulic end; a sealing element is provided at the connection between the outer circumferential surface of the piston rod and the hydraulic end connector (1).

3. A reciprocating pump based on modular design according to claim 2, characterized in that: Multiple sets of the connecting rod (3) and the cross (4) are provided; multiple limiting channels are provided on the limiting sleeve (5); The upper and lower ends of multiple sets of crosses (4) correspond to and are slidably connected to multiple limiting channels respectively; The front ends of multiple sets of connecting rods (3) are staggered and eccentrically hinged to the rotor (2), and the rear ends of multiple sets of crosses (4) are staggered. Multiple piston columns and piston channels are pre-set, with the middle sections of the multiple piston columns slidably connected in the multiple piston channels, and the front ends of the multiple piston columns are respectively connected to the rear ends of the multiple sets of crosses (4).

4. A reciprocating pump based on modular design according to claim 3, characterized in that: The reinforced protective plate component includes a box connecting rod support plate (7) and several stabilizing support plates (8); the stabilizing support plates (8) are provided with multiple long grooves for weight reduction; The box body connecting rod support plate (7) is fixedly and detachably connected to the upper cover, lower cover, left cover and right cover of the box body, and has multiple through holes. The rear ends of multiple crosses (4) correspond to the positions of multiple through holes, and can pass through multiple through holes to connect with the front ends of the corresponding multiple piston columns. The size of the through holes is adapted to the rear ends of the crosses (4). The plurality of stabilizing support plates (8) are vertically arranged, and their two ends are detachably connected to the box connecting rod support plate (7) and the hydraulic end connector (1), respectively.

5. A reciprocating pump based on modular design according to claim 4, characterized in that: One end of the stabilizing support plate (8) is connected to the box body connecting rod support plate (7) by bolts; the other end of the stabilizing support plate (8) is provided with a positioning plate, which is perpendicular to the box body connecting rod support plate (7), and the hydraulic end connector (1) is provided with a positioning slot, which is engaged with the positioning slot.

6. A reciprocating pump based on modular design according to claim 5, characterized in that: The hydraulic end includes a strength-increasing / reducing fixture (9) and a pump head (10); after the strength-increasing / reducing fixture (9) and the pump head (10) are assembled, they are fixedly connected to the hydraulic end connector (1) by bolts. The pump head (10) has multiple liquid inlets on its lower wall and a liquid outlet on the upper part of one side wall of the pump head (10). The multiple liquid inlets are connected to multiple piston channels through multiple liquid inlet pipes, and the multiple liquid inlet pipes are connected to the liquid outlet through a liquid outlet pipe. A suction valve is provided at the connection between the liquid inlet pipe and the liquid inlet, and a discharge valve is provided at the connection between the liquid inlet pipe and the liquid outlet pipe.

7. A reciprocating pump based on modular design according to claim 6, characterized in that: The strength-increasing / reducing tooling (9) is provided with multiple positioning blocks; Multiple positioning grooves are provided on the contact surface between the pump head (10) and the strength-increasing tooling (9); The positions and sizes of the plurality of positioning blocks correspond to the positions and sizes of the plurality of positioning slots, respectively.

8. A reciprocating pump based on modular design according to claim 6, characterized in that: The strength adjustment tooling (9) adopts a replaceable structure, and the connection strength with the hydraulic end connector (1) can be adjusted by adding or removing reinforcing ribs and increasing or decreasing the thickness of the plate.

9. A reciprocating pump based on modular design according to claim 1, characterized in that: The surface area of ​​the front cover of the box is greater than the surface area of ​​the hydraulic end connector (1); The top cover, left cover, and right cover of the box all have a structure that is wider at the front and narrower at the back; The box body formed by the corresponding connection of the upper cover, lower cover, left cover, right cover, front cover and hydraulic end connector (1) has a rectangular structure with a gradually decreasing cross-sectional area from front to back.

10. A reciprocating pump based on modular design according to claim 1, characterized in that: The base component includes a first support base (11) and a second support base (12); the first support base (11) and the second support base (12) are fixedly connected by a connecting rod (6); The top of the first support base (11) is provided with multiple rows of front connection holes for fixed connection with the front end of the lower cover of the box; the bottom is provided with multiple rows of front position fixing holes. The top of the second support base (12) is provided with multiple rows of rear connection holes for fixed connection with the rear end of the lower cover of the box; the bottom is provided with multiple rows of rear position fixing holes.

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