An uninterrupted water supply plunger pump system

Abstract

The present invention provides an uninterrupted water supply plunger pump system, comprising a plunger pump device, a reciprocating drive mechanism and a valve body. The plunger pump device is provided with a sliding plug chamber, a first sub-water inlet chamber, a second sub-water inlet chamber, a main water inlet chamber, and a water outlet chamber. A one-way valve is provided between the first sub-water inlet chamber and the main water inlet chamber, between the second sub-water inlet chamber and the main water inlet chamber, between the water outlet chamber and the first sub-water inlet chamber, and between the water outlet chamber and the second sub-water inlet chamber to achieve blocking or connection with the direction of water flow; the reciprocating drive mechanism is used to push the sliding plug to reciprocate in the sliding plug chamber; and the valve body is provided with a water inlet pipe and a water outlet pipe. The uninterrupted water supply plunger pump system of the present invention has a compact structure, is easy to assemble, can achieve uninterrupted water supply, and can achieve fluid reversal through the valve body, and has a wide range of applications.

Description

Technical Field

[0001] The invention relates to a pump, in particular to an uninterrupted water supply plunger pump system. Background Art

[0002] A pump is a machine that transports fluids or pressurizes fluids. It transfers the mechanical energy of the prime mover or other external energy to the liquid, increasing the energy of the liquid. Pumps are mainly used to transport liquids such as water, oil, acid and alkali liquids, emulsions, suspensions and liquid metals. They can also transport liquid-gas mixtures and liquids containing suspended solids. Pumps can usually be divided into three categories according to their working principles: positive displacement pumps, dynamic pumps and other types of pumps. In addition to classification by working principle, they can also be classified and named by other methods. For example, according to the driving method, they can be divided into electric pumps and water turbine pumps; according to the structure, they can be divided into single-stage pumps and multi-stage pumps; according to the purpose, they can be divided into boiler feed pumps and metering pumps; according to the nature of the transported liquid, they can be divided into water pumps, oil pumps and mud pumps. According to the presence or absence of an axis structure, they can be divided into linear pumps and traditional pumps. Water pumps can only transport logistics with fluids as the medium, and cannot transport solids.

[0003] Due to the influence of its structure, the traditional plunger pump has low piston stroke utilization, intermittent water supply, and unsatisfactory water supply effect and stability. In addition, the traditional plunger pump has a single function, for example, it cannot be reversed, and has a narrow scope of application. Summary of the invention

[0004] [1] Technical issues to be solved

[0005] The technical problem to be solved by the present invention is to provide an uninterrupted water supply plunger pump system which has a compact structure, stable and reliable water supply and can realize reversal.

[0006] 【2】Technical solutions to solve the problem

[0007] The present invention provides an uninterrupted water supply plunger pump system, which comprises:

[0008] A plunger pump device 4, wherein the plunger pump device is provided with a sliding plug cavity, a first sub-water inlet cavity 440 connected to one end of the sliding plug cavity, a second sub-water inlet cavity 441 connected to the other end of the sliding plug cavity, a main water inlet cavity 403 connected to the first sub-water inlet cavity 440 and the second sub-water inlet cavity 441, and a water outlet cavity 402 connected to the first sub-water inlet cavity 440 and the second sub-water inlet cavity 441, and a one-way valve that can be blocked or connected according to the direction of water flow is provided between the first sub-water inlet cavity 440 and the main water inlet cavity 403, between the second sub-water inlet cavity 441 and the main water inlet cavity 403, between the water outlet cavity 402 and the first sub-water inlet cavity 440, and between the water outlet cavity 402 and the second sub-water inlet cavity 441;

[0009] A reciprocating drive mechanism 1, connected to the slide plug 68 in the slide plug cavity, for driving the slide plug to reciprocate in the slide plug cavity;

[0010] The valve body 5 is provided with a water inlet pipe connected to the main water inlet on the main water inlet chamber 403 and a water outlet pipe connected to the water outlet on the water outlet chamber 402 .

[0011] The uninterrupted water supply plunger pump system as described in claim 1 is characterized in that: the reciprocating drive mechanism includes a first shell 11, a cam piston assembly whose output end is connected to the sliding plug is provided in the first shell 11, and a drive device 2 connected to the cam piston assembly and used to provide power is provided on the side wall of the first shell 11.

[0012] Furthermore, the cam piston assembly includes a driving gear 65, a driven gear 61, a crankshaft 62 and a connecting rod 64, the driving gear 65 is rotatably installed in the first housing 11, the end of the driving gear extends to the outside of the first housing 11 and is connected to the driving device 2, the driven gear 61 is meshed with the driving gear 65, the head of the crankshaft 62 is rotatably hinged to the end face of the driven gear 61 and is eccentrically arranged, the connecting rod 64 is slidably fitted on the first housing, and its head is hinged to the tail of the crankshaft 62, and the tail of the connecting rod 64 extends to the outside of the first housing and serves as the output end of the reciprocating motion.

[0013] Furthermore, the water outlet chamber is communicated with a booster tank 3 , and the booster tank 3 is provided with a safety valve and a pressure gauge.

[0014] Furthermore, the plunger pump device 4 includes a plunger pump housing 41 with a cavity formed inside, a cylinder is horizontally arranged in the cavity, a sliding plug cavity is formed in the cylinder, a working chamber is formed between the outer wall of the cylinder and the inner wall of the plunger pump housing, two horizontal partitions 45 are arranged in the working chamber, the horizontal partitions 45 divide the working chamber into an upper chamber, a middle chamber and a lower chamber, a vertical partition 44 is arranged in the middle chamber, the vertical partition 44 divides the middle chamber into a first sub-water inlet chamber 440 and a second sub-water inlet chamber 441, notches for connecting the first sub-water inlet chamber 440 and the second sub-water inlet chamber 441 are respectively arranged at both ends of the sliding plug cavity, holes connecting adjacent chambers are opened at the upper and lower ends of the first sub-water inlet chamber 440 and the second sub-water inlet chamber 441, and a one-way valve is arranged on the hole, the upper chamber serves as a water outlet chamber, and a water outlet is opened on its side wall, and the lower chamber serves as a main water inlet chamber, and a water inlet is opened on its side wall.

[0015] Furthermore, the hole body includes a first hole body opened at the upper end of the first sub-water inlet chamber 440 and connected to the water outlet chamber, a second hole body opened at the lower end of the first sub-water inlet chamber 440 and connected to the main water inlet chamber, a third hole body opened at the upper end of the second sub-water inlet chamber 440 and connected to the water outlet chamber, and a fourth hole body opened at the lower end of the second sub-water inlet chamber 440 and connected to the main water inlet chamber.

[0016] Furthermore, a valve ball limiting device is provided at the upper end of the hole body, and a valve ball is provided inside the valve ball limiting device. The valve ball can block or connect the hole body according to the direction of water flow.

[0017] Furthermore, the front end of the working cavity is open, a cover body is fixed to the open end by bolts, and the water inlet and the water outlet are provided on the cover body.

[0018] Furthermore, the valve body is a four-way butterfly valve.

[0019] Furthermore, the valve body 5 is formed with a valve cavity, and a first pipeline 501, a second pipeline 502, a third pipeline 503 and a fourth pipeline 504 connected to the valve cavity, and a butterfly plate 56 is rotatably installed in the valve cavity. When the butterfly plate 56 is rotated to the left limit position, the first pipeline is connected to the second pipeline, and the third pipeline is connected to the fourth pipeline; when the butterfly plate 56 is rotated to the right limit position, the first pipeline is connected to the fourth pipeline, and the second pipeline is connected to the third pipeline. The valve body is provided with a handle 54 connected to the butterfly plate and used to control its rotation.

[0020] 【3】Beneficial effects

[0021] The uninterrupted water supply plunger pump system of the present invention adopts a modular assembly design, with low manufacturing cost, convenient assembly and low assembly difficulty; the power mechanism has large and stable output force; the reciprocating mechanism operates stably and reliably, has good balance, has no eccentric vibration during operation, and has low working noise; the unique pump body structure design has low manufacturing cost, can realize double-cavity alternating uninterrupted operation, greatly improves energy utilization, avoids empty stroke, and has high working efficiency; the valve ball constitutes a one-way valve structure, further reduces manufacturing cost, and is easy to assemble; a booster pump is provided to increase fluid pressure and stability, improve output stability, and avoid dry grinding when closed; the four-way valve design can adjust the output pipeline and the fluid direction in the output pipeline according to demand, can realize working conditions such as backwashing, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the uninterrupted water supply plunger pump system of the present invention;

[0023] Figure 2It is a structural schematic diagram of the uninterrupted water supply plunger pump system of the present invention from another angle;

[0024] Figure 3 It is a structural schematic diagram of the reciprocating drive mechanism of the uninterrupted water supply plunger pump system of the present invention;

[0025] Figure 4 A cross-sectional view of the reciprocating drive mechanism of the uninterrupted water supply plunger pump system of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the cam piston assembly of the uninterrupted water supply plunger pump system of the present invention;

[0027] Figure 6 A top view of a cam piston assembly of an uninterrupted water supply plunger pump system of the present invention;

[0028] Figure 7 It is a schematic diagram of the assembly structure of the cam piston assembly of the uninterrupted water supply plunger pump system of the present invention;

[0029] Figure 8 It is a schematic diagram of the installation of the crankshaft of the cam piston assembly of the uninterrupted water supply plunger pump system of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the plunger pump device of the uninterrupted water supply plunger pump system of the present invention;

[0031] Fig.10 A cross-sectional view of a plunger pump device of an uninterrupted water supply plunger pump system of the present invention;

[0032] Fig.11 It is a schematic diagram of the internal structure of the plunger pump device of the uninterrupted water supply plunger pump system of the present invention;

[0033] Fig.12 It is a schematic diagram of the internal structure of the plunger pump device of the uninterrupted water supply plunger pump system of the present invention from another angle;

[0034] Fig.13 It is a structural schematic diagram of the sliding plug of the uninterrupted water supply plunger pump system of the present invention;

[0035] Fig.14 A cross-sectional view of a sliding plug of the uninterrupted water supply plunger pump system of the present invention;

[0036] Fig.15 It is a structural schematic diagram of a valve body of the uninterrupted water supply plunger pump system of the present invention;

[0037] Fig.16 It is a schematic diagram of the valve body of the sliding plug of the uninterrupted water supply plunger pump system of the present invention from another angle;

[0038] Fig.17It is a transverse cross-sectional view of a valve body of the uninterrupted water supply plunger pump system of the present invention;

[0039] Fig.18 It is a longitudinal sectional view of the valve body of the uninterrupted water supply plunger pump system of the present invention. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0041] See also Figures 1 to 18 The present invention provides an uninterrupted water supply plunger pump system, including a plunger pump device 4, a reciprocating drive mechanism 1 and a valve body 5.

[0042] A sliding plug chamber, a first sub-water inlet chamber 440, a second sub-water inlet chamber 441, a main water inlet chamber 403 and a water outlet chamber 402 are provided in the plunger pump device 4. One end of the sliding plug chamber is connected to the first sub-water inlet chamber 440, and the other end of the sliding plug chamber is connected to the second sub-water inlet chamber 441. The main water inlet chamber 403 is connected to the first sub-water inlet chamber 440 and the second sub-water inlet chamber 441 at the same time. The water outlet chamber 402 is connected to the first sub-water inlet chamber 440 and the second sub-water inlet chamber 441 at the same time. A one-way valve is provided between the first sub-water inlet chamber 440 and the main water inlet chamber 403, between the second sub-water inlet chamber 441 and the main water inlet chamber 403, between the water outlet chamber 402 and the first sub-water inlet chamber 440, and between the water outlet chamber 402 and the second sub-water inlet chamber 441. The one-way valve can realize blocking or connection according to the direction of water flow.

[0043] The structure of the plunger pump device is described in detail below:

[0044] See also Figure 9-12The plunger pump device 4 includes a plunger pump housing 41 with a cavity formed inside. The plunger pump housing 41 is a rectangular parallelepiped structure as a whole. A cylinder is horizontally arranged in the cavity. A sliding plug cavity is formed in the cylinder. The sliding plug cavity is arranged on the left and right, and both ends penetrate to the outside of the plunger pump housing 41, which is convenient for the assembly and daily maintenance of the sliding plug. End covers are fixed to the two open ends of the sliding plug cavity by screws, and a sealing ring is arranged between the end cover and the plunger pump housing to achieve the sealing of the sliding plug cavity; a working cavity is formed between the front end outer wall of the cylinder and the inner wall of the plunger pump housing, and two horizontal partitions 45 are arranged in the working cavity. The horizontal partition 45 divides the working cavity into an upper cavity, a middle cavity and a lower cavity (from top to bottom), and a vertical partition 44 is arranged in the middle cavity. The vertical partition 44 divides the middle cavity into a first sub-entry The water chamber 440 and the second sub-water inlet chamber 441, in this embodiment, the vertical partition 44 is arranged front and back, and is located in the middle position, so that the volumes of the first sub-water inlet chamber 440 and the second sub-water inlet chamber 441 are the same; notches for connecting the first sub-water inlet chamber 440 and the second sub-water inlet chamber 441 are respectively provided at both ends of the sliding plug chamber, that is, the left end of the sliding plug chamber is connected to the first sub-water inlet chamber 440, and the right end of the sliding plug chamber is connected to the second sub-water inlet chamber 441; holes connecting adjacent chambers are provided at the upper and lower ends of the first sub-water inlet chamber 440 and the second sub-water inlet chamber 441, specifically, the holes include a first hole provided at the upper end of the first sub-water inlet chamber 440 and connected to the water outlet chamber, a first hole provided at the lower end of the first sub-water inlet chamber 440 and connected to the main water inlet chamber 403 a second hole body, a third hole body opened at the upper end of the second sub-water inlet chamber 440 and connected to the water outlet chamber, and a fourth hole body opened at the lower end of the second sub-water inlet chamber 440 and connected to the main water inlet chamber, and the first hole body and the second hole body are coaxially arranged, and the third hole body and the fourth hole body are coaxially arranged; the upper chamber serves as the water outlet chamber, and a water outlet is opened on the side wall of the water outlet chamber, and the lower chamber serves as the main water inlet chamber, and a water inlet is opened on the side wall of the main water inlet chamber; a one-way valve is provided on the hole body, and each one-way valve allows the fluid in the main water inlet chamber to enter the first sub-water inlet chamber, but not vice versa, and allows the fluid in the first sub-water inlet chamber to enter the water outlet chamber, but not vice versa; allows the fluid in the main water inlet chamber to enter the second sub-water inlet chamber, but not vice versa, and allows the fluid in the second sub-water inlet chamber to enter the water outlet chamber, but not vice versa A valve ball limiting device is provided at the upper end of the hole body, and a valve ball 461 is provided in the valve ball limiting device. The valve ball 461 can block or connect the hole body according to the direction of water flow. The valve ball limiting device is at least three limiting parts 47 arranged on the extension of the hole body, and a floating area is formed between the limiting parts to allow the valve to move up and down. Specifically, the limiting part 47 is a rod body vertically arranged at the edge of the hole body, and each limiting part includes three circumferentially arranged rod bodies. The limiting part is arranged above each hole body. The limiting part 47 and the valve ball constitute a one-way valve. A rubber ring is provided on the edge of the hole body to improve the sealing performance when the valve ball contacts; In order to facilitate assembly, the front end of the working cavity is open, and a cover body is fixed to the open end by bolts to achieve sealing, and the water inlet and the water outlet are opened on the cover body;At the same time, a screw hole is provided on the side wall of the working cavity, and a plug 48 is provided on the screw hole. In this embodiment, the screw hole is provided on the side wall of the middle cavity. ;

[0045] A booster tank 3 is provided on the plunger pump device 4. Figure 1-Figure 2 , Fig. 9 , Fig.11 The boosting tank is fixed on the top of the plunger pump housing. Specifically, a hole is opened on the top of the water outlet chamber and is connected to the boosting tank 3. The boosting tank 3 is a cylindrical tank body as a whole, which is used to achieve pressurization and steady flow. A safety valve and a pressure gauge are provided in the boosting tank 3 to intuitively understand the internal pressure of the tank body. When the pressure is too high, the safety valve automatically releases the pressure to ensure safety.

[0046] The reciprocating drive mechanism 1 is connected to the sliding plug 68 in the sliding plug cavity, and is used to push the sliding plug to move back and forth in the sliding plug cavity to realize the operation of the pump body; Figure 1-Figure 8The compound drive mechanism includes a first housing 11, which is a rectangular parallelepiped structure as a whole, which is easy to install. A cam piston assembly whose output end is connected to the sliding plug is provided in the first housing 11, and a driving device 2 connected to the cam piston assembly and used to provide power is provided on the side wall of the first housing 11; specifically, the cam piston assembly includes a driving gear 65, a driven gear 61, a crankshaft 62 and a connecting rod 64, and the driving gear 65 is rotatably installed in the first housing 11, and the axis of the driving gear 65 is horizontally arranged and perpendicular to the sliding direction of the sliding plug. The end of the driving gear extends to the outside of the first housing 11 and is connected to the driving device 2. In this embodiment, the driving device 2 is a driving device. The motor is fixed on the top of the first shell, and a first pulley 23 is provided on the output shaft of the driving motor. A second pulley 24 is fixed to the end of the driving gear 65. The first pulley and the second pulley are connected by a belt 25. The diameter of the second pulley is larger than the diameter of the first pulley. Therefore, there is a deceleration effect after output. In order to improve safety and aesthetics, a shield 21 that can cover the first pulley 23, the second pulley 24 and the belt is provided. A bottom plate 22 is provided on the top of the first shell, and the bottom plate is rotatably hinged to the top of the first shell with an adjustable angle. The driving motor is fixed on the bottom plate 22, and the tightness of the belt is adjusted by adjusting the angle. The driven gear 61 meshes with the driving gear 65. The number of teeth of the driving gear is less than that of the driven gear, so as to achieve a further deceleration effect. In this embodiment, the transmission ratio of the driving gear to the driven gear is 1 / 11-1 / 8, and the teeth thereof are all helical teeth. The head of the crankshaft 62 is rotatably hinged on the end face of the driven gear 61 and is eccentrically arranged. Specifically, a center hole is provided on the driven gear 61, and a main shaft is connected in the center hole through a key. The driven gear is installed in the first housing through the main shaft, and the second pulley is fixed to the end of the main shaft. A cam 612 is provided on the end face of the driven gear 61, and the axis of the cam is parallel to the axis of the center hole and is not coaxial. The cam is arranged on the driven gear 61. The end face of the wheel 61 is provided with an annular protrusion, and the outer wall of the annular protrusion forms a circular working surface. The ratio of the distance between the axis of the cam shaft 612 and the axis of the driven gear to the radius of the driven gear is 1 / 3-1 / 2, and the ratio of the radius of the cam shaft to the radius of the driven gear is 1 / 4-1 / 3; a first annular connecting portion 621 which can be sleeved on the cam shaft 612 and realize rotation is provided at the head of the crankshaft 62, the tail of the crankshaft 62 is hinged on the piston 63, and the connecting rod is fixed on the piston; in order to improve the stability of operation and avoid vibration caused by eccentricity, a lightening hole 610 and / or a counterweight block 611 are opened on the driven gear 61, and the center of gravity is located on the axis of the driven gear.

[0047] The connecting rod 64 is horizontally slidably mounted on the first housing, the head of the connecting rod 64 is hinged to the tail of the crankshaft 62, the tail of the connecting rod 64 extends outside the first housing and serves as an output end of reciprocating motion, and is connected to the sliding plug 68 in the sliding plug cavity. Specifically, a vertical partition 12 is provided in the first housing 11, and the vertical partition 12 separates the first housing into a first cavity 100 and a second cavity. The driving gear 65, the driven gear 61 and the crankshaft are installed in the first cavity, and a sliding plug sleeve 13 is fixed on the vertical partition 12. The sliding plug sleeve is horizontally arranged, and the piston 63 is slidably mounted in the sliding plug sleeve. An installation cavity with an open end is formed on the sliding plug sleeve 63. The installation cavity A pin shaft is provided inside for connecting to the second annular connecting part 622 at the tail of the crankshaft 62, a screw hole is opened at the end of the sliding plug sleeve, and the end of the connecting rod 64 is threadedly connected in the screw hole. The end of the connecting rod extends to the outside of the first housing after passing through the second cavity, and is connected to the sliding plug 68 after passing through the pump housing. A sealing assembly is provided between the connecting rod and the pump housing, and the sealing assembly includes a threaded cover body 431 and a plurality of sealing rings 43. The sealing ring is sleeved between the pump housing and the outer wall of the connecting rod, and the threaded cover body is sleeved on the connecting rod and is threadedly connected to the pump housing for fixing the sealing ring; the above driving gear, driven gear, piston, crankshaft, and connecting rod constitute a cam piston assembly.

[0048] Sliding plug structure Figure 13-14 A threaded connector 641 is provided at the end of the connecting rod, and a mounting hole is opened on the sliding plug 68. The threaded connector passes through the mounting hole and is connected with a nut to achieve fixation. A sealing ring 683 is provided on the side wall of the sliding plug and is fitted to the inner wall of the sliding plug cavity. Specifically, the sliding plug 68 includes a circular inner support plate 681 and an outer support plate 682. The outer support plates are two and are fitted on both sides of the inner support plate. The diameter of the outer support plate 682 is larger than the diameter of the inner support plate 681. In this embodiment, the inner support plate is made of elastic material, and the outer support plate is made of The inner support plate is made of metal, and preferably, the inner support plate is made of plastic, and the outer support plate is made of stainless steel. An annular mounting groove for mounting a sealing ring 683 is formed between the outer edge of the inner support plate and the inner wall (opposite surface) of the outer support plate. Two sealing lips 6831 with triangular cross sections are provided on the side walls of the sealing ring 683, facing both sides respectively, so as to improve the sealing performance when the sliding plug slides left and right. In this embodiment, the ratio between the thickness of the sliding plug and the diameter of the sliding plug is 1 / 6-1 / 5, with high strength and small volume, thereby increasing the effective volume of the sliding plug cavity.

[0049] The valve body 5 is arranged at the inlet and outlet ends of the pump. Figure 1-Figure 3 , Figure 15-18, the valve body 5 is provided with an inlet pipe connected to the main water inlet on the main water inlet chamber 403, and a water outlet pipe connected to the water outlet on the water outlet chamber 402. The valve body in this embodiment is a four-way butterfly valve; a valve cavity, and a first pipeline 501, a second pipeline 502, a third pipeline 503 and a fourth pipeline 504 connected to the valve cavity are formed in the valve body 5, and a butterfly plate 56 is rotatably installed in the valve cavity, and the rotation axis of the butterfly plate is perpendicular to the plane formed by the axes of the pipelines. When the butterfly plate 56 rotates to the left limit position, the first pipeline is connected to the second pipeline, and the third pipeline is connected to the fourth pipeline. pipeline; when the butterfly plate 56 rotates to the right limit position, the first pipeline is connected to the fourth pipeline, and the second pipeline is connected to the third pipeline at the same time. A handle 54 connected to the butterfly plate and used to control its rotation is provided outside the valve body. The rotation of the butterfly plate is controlled by the handle to realize the reversal of the pump in the entire system pipeline; specifically, the valve body 5 includes a valve body 51, a valve cavity is opened on the valve body 51, the valve cavity is spherical, and a sealing protrusion is provided on the side wall of the valve cavity to contact the side wall of the butterfly plate to achieve sealing when the butterfly plate rotates to the limit position. The rear end of the valve body 51 is provided with a liquid outlet 531 and an inlet The liquid inlet 532 and the liquid outlet 531 are connected to the upper end of the valve cavity through the flow channel to form a first pipeline; the liquid inlet 532 is connected to the lower end of the valve cavity through the flow channel to form a third pipeline; in this embodiment, the upper and lower ends of the valve body extend backward to form a mounting portion, and the mounting portion is a columnar structure as a whole, and the liquid inlet and the liquid outlet are opened on the end surface of the mounting portion; openings are passed through the two sides of the valve cavity, and connecting pipes are provided on the openings to form a second pipeline and a fourth pipeline respectively. In order to facilitate connection, a quick joint is provided at the end of the connecting pipe, and the quick joint is a threaded joint; the stacking plate 56 The side wall is provided with two coaxially arranged cylindrical bodies 561, the axes of the two cylindrical bodies are perpendicular and intersect with the axis of the stacked plate 56, and the stacked plate is rotatably installed in the valve cavity through the two cylindrical bodies, one of which extends outside the valve body and is connected to the handle. The butterfly plate is circular and has a certain thickness. A rubber layer is coated on the outside of the butterfly plate to improve the sealing performance. In order to improve the sealing performance of the cylindrical protrusion, in this embodiment, a conical or truncated cone-shaped sealing portion is provided at the root of the cylindrical protrusion, and the end with a larger diameter of the sealing portion is arranged outwardly to improve the sealing of the root of the cylindrical protrusion.

[0050] The uninterrupted water supply plunger pump system adopts a modular assembly design, with low manufacturing cost, easy assembly and low assembly difficulty; the power mechanism has large and stable output force; the reciprocating mechanism operates stably and reliably, has good balance, no eccentric vibration during operation, and low working noise; the unique pump body structure design has low manufacturing cost, can realize double-chamber alternating uninterrupted operation, greatly improves energy utilization, avoids empty stroke, and has high working efficiency; the valve ball constitutes a one-way valve structure, which further reduces manufacturing cost and is easy to assemble; a booster pump is set to increase fluid pressure and stability, improve output stability, and avoid dry grinding when closed; the four-way valve design can adjust the output pipeline and the fluid direction in the output pipeline according to demand, and can achieve working conditions such as backwashing, with a wide range of applications.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An uninterrupted water supply plunger pump system, characterized in that: include: A plunger pump device, wherein the plunger pump device is provided with a sliding plug cavity, a first sub-water inlet cavity connected to one end of the sliding plug cavity, a second sub-water inlet cavity connected to the other end of the sliding plug cavity, a main water inlet cavity connected to the first sub-water inlet cavity and the second sub-water inlet cavity, and a water outlet cavity connected to the first sub-water inlet cavity and the second sub-water inlet cavity, and a one-way valve that can be blocked or connected according to the direction of water flow is provided between the first sub-water inlet cavity and the main water inlet cavity, between the second sub-water inlet cavity and the main water inlet cavity, between the water outlet cavity and the first sub-water inlet cavity, and between the water outlet cavity and the second sub-water inlet cavity; A reciprocating drive mechanism connected to the sliding plug in the sliding plug cavity and used to push the sliding plug to move reciprocally in the sliding plug cavity; A valve body, the valve body is provided with a water inlet pipe connected to the main water inlet on the main water inlet chamber, and a water outlet pipe connected to the water outlet on the water outlet chamber; The reciprocating drive mechanism comprises a first housing, a cam piston assembly having an output end connected to the slide plug is disposed in the first housing, and a driving device connected to the cam piston assembly and used to provide power is disposed on the side wall of the first housing; The cam piston assembly includes a driving gear, a driven gear, a crankshaft and a connecting rod. The driving gear is rotatably installed in the first housing. The end of the driving gear extends outside the first housing and is connected to the driving device. The driven gear is meshed with the driving gear. The head of the crankshaft is rotatably hinged to the end face of the driven gear and is eccentrically arranged. The connecting rod is slidably fitted on the first housing, and its head is hinged to the tail of the crankshaft. The tail of the connecting rod extends outside the first housing and serves as an output end of reciprocating motion.

2. The uninterrupted water supply plunger pump system according to claim 1, characterized in that: The water outlet chamber is communicated with a booster tank, and the booster tank is provided with a safety valve and a pressure gauge.

3. The uninterrupted water supply plunger pump system according to claim 1, characterized in that: The plunger pump device includes a plunger pump housing with a cavity formed inside, a cylinder is horizontally arranged in the cavity, a sliding plug cavity is formed in the cylinder, a working chamber is formed between the outer wall of the cylinder and the inner wall of the plunger pump housing, two horizontal partitions are arranged in the working chamber, the horizontal partitions divide the working chamber into an upper chamber, a middle chamber and a lower chamber, a vertical partition is arranged in the middle chamber, the vertical partition divides the middle chamber into a first sub-water inlet chamber and a second sub-water inlet chamber, notches for connecting the first sub-water inlet chamber and the second sub-water inlet chamber are respectively arranged at both ends of the sliding plug chamber, a hole body connecting adjacent chambers is opened at the upper end and the lower end of the first sub-water inlet chamber and the second sub-water inlet chamber, a one-way valve is arranged on the hole body, the upper chamber serves as a water outlet chamber, and a water outlet is opened on its side wall, and the lower chamber serves as a main water inlet chamber, and a water inlet is opened on its side wall.

4. The uninterrupted water supply plunger pump system according to claim 3, characterized in that: The hole body includes a first hole body opened at the upper end of the first sub-water inlet chamber and connected to the water outlet chamber, a second hole body opened at the lower end of the first sub-water inlet chamber and connected to the main water inlet chamber, a third hole body opened at the upper end of the second sub-water inlet chamber and connected to the water outlet chamber, and a fourth hole body opened at the lower end of the second sub-water inlet chamber and connected to the main water inlet chamber.

5. The uninterrupted water supply plunger pump system according to claim 3, characterized in that: A valve ball limiting device is provided at the upper end of the hole body, and a valve ball is provided inside the valve ball limiting device. The valve ball can block or connect the hole body according to the direction of water flow.

6. The uninterrupted water supply plunger pump system according to claim 3, characterized in that: The front end of the working chamber is open, a cover body is fixed to the open end by bolts, and the water inlet and the water outlet are arranged on the cover body.

7. The uninterrupted water supply plunger pump system according to claim 1, characterized in that: The valve body is a four-way butterfly valve.

8. The uninterrupted water supply plunger pump system according to claim 1, characterized in that: A valve cavity and a first pipeline, a second pipeline, a third pipeline and a fourth pipeline connected to the valve cavity are formed in the valve body. A butterfly plate is rotatably installed in the valve cavity. When the butterfly plate rotates to the left limit position, the first pipeline is connected to the second pipeline, and the third pipeline is connected to the fourth pipeline; when the butterfly plate rotates to the right limit position, the first pipeline is connected to the fourth pipeline, and the second pipeline is connected to the third pipeline. A handle connected to the butterfly plate and used to control its rotation is provided outside the valve body.

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