A reversible four-way valve

Abstract

The present invention provides a reversible four-way valve, comprising a valve body, a valve cavity formed therein, and a first pipeline, a second pipeline, a third pipeline, and a fourth pipeline connected to the valve cavity; a butterfly plate rotatably mounted in the valve cavity; when the butterfly plate rotates to the left limit position, the first pipeline connects to the second pipeline, and the third pipeline connects to the fourth pipeline; when the butterfly plate rotates to the right limit position, the first pipeline connects to the fourth pipeline, and the second pipeline connects to the third pipeline; a handle connected to the butterfly plate and used to control its rotation is provided on the valve body. The reversible four-way valve of the present invention can adjust the output pipeline and the direction of the fluid in the output pipeline according to demand, can meet working conditions such as backwashing, and is simple to operate, labor-saving, and has a wide range of applications.

Description

Technical Field

[0001] The present invention relates to a valve, in particular to a reversible four-way valve. Background Art

[0002] A pump is a machine that transports or pressurizes fluids. It transfers the mechanical energy of the prime mover or other external energy to the liquid, increasing the liquid's energy. Pumps are primarily used to transport liquids such as water, oil, acid and alkali solutions, emulsions, suspensoids, and liquid metals. They can also transport liquid-gas mixtures and liquids containing suspended solids. Pumps are generally categorized by their operating principle into three types: positive displacement pumps, dynamic pumps, and other types. In addition to classification by operating principle, other types of pumps can also be used for classification and naming. For example, by drive method, they can be divided into electric pumps and water turbine pumps; by structure, they can be divided into single-stage pumps and multi-stage pumps; by application, they can be divided into boiler feed pumps and metering pumps; and by the nature of the liquid being transported, they can be divided into water pumps, oil pumps, and slurry pumps. Pumps can be divided into linear pumps and traditional pumps based on the presence or absence of a shaft. Water pumps can only transport fluids 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, such as the inability to reverse, and has a narrow scope of application.

[0004] To this end, the applicant has developed an uninterrupted water supply system, which is equipped with a valve that can achieve reversal to meet the needs of various working conditions. Summary of the Invention

[0005] [1] Technical issues to be solved

[0006] The technical problem to be solved by the present invention is to provide a reversible four-way valve with a compact structure and capable of switching a water inlet pipe and a water outlet pipe.

[0007] 【2】Technical solutions to solve the problem

[0008] The present invention provides a reversible four-way valve, including a valve body 5, in which a valve cavity is formed, and a first pipeline 501, a second pipeline 502, a third pipeline 503 and a fourth pipeline 504 connected to the valve cavity, a butterfly plate 56 is rotatably installed in the valve cavity, 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; 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, and the valve body is provided with a handle 54 connected to the butterfly plate and used to control its rotation.

[0009] Furthermore, the rotation axis of the butterfly plate is perpendicular to the plane formed by the axes of the pipelines.

[0010] Furthermore, the valve body 5 includes a valve body 51, the valve cavity is opened on the valve body 51, and the rear end of the valve body 51 is provided with a liquid outlet 531 and a liquid inlet 532, the liquid outlet 531 is connected with the upper end of the valve cavity through a flow channel to form a first pipeline; the liquid inlet 532 is connected with the lower end of the valve cavity through a flow channel to form a third pipeline; openings are passed through both sides of the valve cavity, and connecting pipes are provided on the openings to form a second pipeline and a fourth pipeline respectively.

[0011] Furthermore, a quick-release joint is provided at the end of the connecting pipe.

[0012] Furthermore, the upper and lower ends of the valve body extend backward to form a mounting portion, and the liquid inlet and the liquid outlet are provided on the mounting portion.

[0013] Furthermore, the side wall of the butterfly plate 56 is provided with two coaxially arranged cylindrical bodies 561, the axes of the two cylindrical bodies are perpendicular to and intersect with the axis of the stacking plate 56, and the stacking 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.

[0014] Furthermore, the valve cavity is spherical, and the side wall of the valve cavity is provided with a sealing protrusion that contacts the side wall of the butterfly plate to achieve sealing when the butterfly plate rotates to the limit position.

[0015] Furthermore, the butterfly plate is covered with a rubber layer.

[0016] 【3】Beneficial effects

[0017] The reversible four-way valve of the present invention can adjust the output pipeline and the direction of the fluid in the output pipeline according to demand, can realize working conditions such as backwashing, and is simple to operate, labor-saving, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of an uninterrupted water supply plunger pump system according to the present invention;

[0019] Figure 2 Another structural diagram of the uninterrupted water supply plunger pump system according to the present invention;

[0020] Figure 3 A schematic structural diagram of the reciprocating drive mechanism of the uninterrupted water supply plunger pump system of the present invention;

[0021] Figure 4 A cross-sectional view of a reciprocating drive mechanism of an uninterrupted water supply plunger pump system according to the present invention;

[0022] Figure 5A schematic structural diagram of a cam-piston assembly of an uninterrupted water supply plunger pump system according to the present invention;

[0023] Figure 6 A top view of a cam-piston assembly of an uninterrupted water supply plunger pump system to which the present invention is applied;

[0024] Figure 7 A schematic diagram of the assembly structure of the cam-piston assembly of the uninterrupted water supply plunger pump system of the present invention;

[0025] Figure 8 A schematic diagram of the installation of a crankshaft of a cam-piston assembly of an uninterrupted water supply plunger pump system according to the present invention;

[0026] Figure 9 A schematic structural diagram of a plunger pump device of an uninterrupted water supply plunger pump system according to the present invention;

[0027] Figure 10 A cross-sectional view of a plunger pump device of an uninterrupted water supply plunger pump system according to the present invention;

[0028] Figure 11 A schematic diagram of the internal structure of a plunger pump device of an uninterrupted water supply plunger pump system according to the present invention;

[0029] Figure 12 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;

[0030] Figure 13 A schematic structural diagram of a sliding plug in an uninterrupted water supply plunger pump system according to the present invention;

[0031] Figure 14 A cross-sectional view of a sliding plug of an uninterrupted water supply plunger pump system according to the present invention;

[0032] Figure 15 Schematic diagram of the structure of the valve body of the reversible four-way valve of the present invention;

[0033] Figure 16 A schematic diagram of the valve body of the reversible four-way valve of the present invention from another angle;

[0034] Figure 17 It is a transverse cross-sectional view of the valve body of the reversible four-way valve of the present invention;

[0035] Figure 18 It is a longitudinal sectional view of the valve body of the reversible four-way valve of the present invention. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0037] See Figures 1 to 18The 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.

[0038] 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, and 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 connecting according to the direction of water flow;

[0039] The structure of the plunger pump device is described in detail below:

[0040] See Figures 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 pass through the outside of the plunger pump housing 41 to facilitate the assembly of the sliding plug and daily maintenance. End covers are fixed to the two open ends of the sliding plug cavity by screws, and a sealing ring is provided between the end cover and the plunger pump housing to achieve the sealing of the sliding plug cavity; a working chamber 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 provided in the working chamber. The horizontal partition 45 divides the working chamber into an upper chamber, a middle chamber and a lower chamber (from top to bottom), and a vertical partition 44 is provided in the middle chamber. The vertical partition 44 divides the middle chamber 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 are provided at the upper and lower ends of the first sub-water inlet chamber 440 and the second sub-water inlet chamber 441 to connect the adjacent chambers. Specifically, the hole bodies include 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 hole body opened 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 provided at the upper end of the second sub-water inlet chamber 440 and connected to the water outlet chamber, and a fourth hole body provided 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 provided 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 provided 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, so that the fluid in the first sub-water inlet chamber can enter the water outlet chamber, but not vice versa; the fluid in the main water inlet chamber can enter the second sub-water inlet chamber, but not vice versa, and the fluid in the second sub-water inlet chamber can 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 composed of at least three limiting parts 47 arranged on the extension of the hole body. 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. 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 at the edge of the hole body to improve the sealing when the valve ball contacts it; in order to facilitate assembly, the front end of the working chamber is open, and a cover body is fixed to the open end by bolts to achieve sealing. The water inlet and water outlet are opened on the cover body;At the same time, a screw hole is provided on the side wall of the working chamber, 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 chamber.

[0041] A booster tank 3 is provided on the plunger pump device 4. Figure 1-Figure 2 、 Figure 9 、 Figure 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 pressure to ensure safety.

[0042] The reciprocating drive mechanism 1 is connected to the slide plug 68 in the slide plug cavity and is used to push the slide plug to move back and forth in the slide plug cavity to realize the operation of the pump body; Figures 1-8The compound drive mechanism includes a first housing 11. The first housing is a rectangular parallelepiped structure as a whole, which is easy to install. A cam-piston assembly with an output end connected to the sliding plug is provided in the first housing 11. The side wall of the first housing 11 is provided with a driving device 2 connected to the cam-piston assembly and used to provide power; specifically, 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 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 The motor is fixed on the top of the first shell, and a first pulley 23 is provided on the output shaft of the drive 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 that of the first pulley. Therefore, there is a deceleration effect after output. In order to improve safety and aesthetics, a shield 21 is provided to cover the first pulley 23, the second pulley 24 and the belt. A base plate 22 is provided on the top of the first shell, which is rotatably hinged to the top of the first shell and has an adjustable angle. The drive motor is fixed on the base plate 22, and the tightness of the belt is adjusted by adjusting the angle. The driven gear 61 is meshed 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 and 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 to 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 to 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. 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 has 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 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 to the radius of the driven gear is 1 / 4-1 / 3; a first annular connecting portion 621 that can be mounted on the cam 612 and rotate is provided at the head of the crankshaft 62, the tail of the crankshaft 62 is hinged to the piston 63, and the connecting rod is fixed to 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.

[0043] 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 the output end of the 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. 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. A sliding plug sleeve 13 is fixed on the vertical partition 12. The sliding plug sleeve is horizontally arranged. 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 is provided inside for connecting to the second annular connecting part 622 at the tail of the crankshaft 62, a screw hole is provided at the end of the sliding sleeve, and the end of the connecting rod 64 is threadedly connected to 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 multiple 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 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.

[0044] Slider structure see 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 to fit 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, 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, to improve the sealing performance when the slide plug slides left and right. In this embodiment, the ratio between the thickness of the slide plug and the diameter of the slide plug is 1 / 6-1 / 5, which has high strength and small volume, thereby increasing the effective volume of the slide plug cavity.

[0045] The valve body 5 is set at the inlet and outlet ends of the pump. Figure 1-Figure 3 、 Figures 15-18, 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. 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. 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. 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. A handle 54 is provided on the outside of the valve body, which is connected to the butterfly plate and used to control its rotation. 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, and the valve cavity is spherical. A sealing protrusion is provided on the side wall of the valve cavity, which contacts the side wall of the butterfly plate when the butterfly plate rotates to the limit position to realize sealing. 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 a flow channel to form a first pipeline; the liquid inlet 532 is connected to the lower end of the valve cavity through a 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 cylindrical structure as a whole, and the liquid inlet and liquid outlet are opened on the end surface of the mounting portion; openings are passed through both sides of the valve cavity, and connecting pipes are provided on the openings to form the second pipeline and the fourth pipeline respectively. In order to facilitate connection, a quick-release joint is provided at the end of the connecting pipe, and the quick-release 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 laminated plate 56, and the laminated plate is rotatably installed in the valve cavity through the two cylindrical bodies. One of the cylindrical bodies 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 frustum-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 outward to improve the sealing of the root of the cylindrical protrusion.

[0046] 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 operating 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 reducing manufacturing cost and easy assembly; 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 realize working conditions such as backwashing, with a wide range of applications.

[0047] 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 within the scope of protection of the present invention.

Claims

1. A reversible four-way valve, characterized in that: The closure of the valve body is connected with the valve stem, and the closure of the valve stem is connected with the valve stem, and the closure of the valve stem is connected with the valve stem. When the 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; the valve body is provided with a handle connected to the butterfly plate and used to control its rotation; the valve body includes a valve body main body, the valve cavity is opened on the valve body main body, the rear end of the valve body main body is provided with a liquid outlet and a liquid inlet, the liquid outlet is connected with the upper end of the valve cavity through a flow channel and forms a first pipeline; the liquid inlet is connected with the lower end of the valve cavity through a flow channel and forms a third pipeline; openings are passed through both sides of the valve cavity, and connecting pipes are provided on the openings to form the second pipeline and the fourth pipeline respectively; the upper and lower ends of the valve body main body extend backward and form a mounting portion, and the liquid inlet and the liquid outlet are opened on the mounting portion.

2. The reversible four-way valve according to claim 1, characterized in that: The rotation axis of the butterfly plate is perpendicular to the plane formed by the axes of the pipelines.

3. The reversible four-way valve according to claim 1, characterized in that: The end of the connecting pipe is provided with a quick movable joint.

4. The reversible four-way valve according to claim 1, characterized in that: The side wall of the butterfly plate is provided with two coaxially arranged cylindrical bodies, the axes of the two cylindrical bodies are perpendicular and intersect with the axis of the butterfly plate, and the butterfly plate is rotatably installed in the valve cavity through the two cylindrical bodies, and one of the cylindrical bodies extends outside the valve body and is connected to the handle.

5. The reversible four-way valve according to claim 1, characterized in that: The valve cavity is spherical, and the side wall of the valve cavity is provided with a sealing protrusion which contacts the side wall of the butterfly plate to achieve sealing when the butterfly plate rotates to the limit position.

6. The reversible four-way valve according to claim 1, characterized in that: The butterfly plate is covered with a rubber layer.

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