A multi-functional valve for road roller sprinkler systems

Abstract

This invention discloses a multi-functional valve for a road roller sprinkler system. The valve achieves synchronous rotation of three cams via a rotating water distribution shaft mechanism. The three cams include a first / second-position cam, a second / second-position cam, and a first-position cam, arranged sequentially from top to bottom. The first / second-position cam controls the opening and closing of the valve core in the water supply channel; the second / second-position cam controls the opening and closing of the valve core in the water tank inlet channel; and the first-position cam controls the opening and closing of the valve cores in the water discharge channel and the antifreeze supply channel. When the water distribution shaft mechanism rotates to different functional positions, the protrusions on the outer sides of the cams open the corresponding valve cores, opening the corresponding water channels, thus achieving the functions of water supply, water discharge, antifreeze supply, or shutdown. This invention simplifies the structure of the road roller's water system, saving space; it also simplifies the assembly process, making it easier for users to operate.

Description

Technical Field

[0001] This invention relates to a road roller water spraying system, and more specifically to a multi-functional valve for a road roller water spraying system. Background Technology

[0002] A water spraying system is an essential auxiliary system on road rollers. Because of the significant temperature difference between the roller's drum and the asphalt pavement, asphalt concrete easily adheres to the drum's surface. Therefore, road rollers used for compacting asphalt materials are equipped with a water spraying system. The function of the water spraying system is to evenly spray water mist onto the drum surface, forming a water film between the drum and the asphalt pavement, thus preventing asphalt concrete from adhering to the drum's surface.

[0003] Figure 1 The diagram shows the water supply components of an existing road roller sprinkler system. Four ball valves are installed between the water tank 5 and the filter 10. A four-way ball valve seat 8 connects to the water tank 5 via a first ball valve 1, a first hose 7, and a first elbow 6. It connects to the filter 10 via a fourth ball valve 4 and a second hose 9. Simultaneously opening the first ball valve 1 and the second ball valve 2 allows water to be released from the water tank 5, preventing the water in the tank from freezing and damaging it in winter. Simultaneously opening the first ball valve 1 and the fourth ball valve 4 allows water to be supplied to the water pump through the filter 10. Simultaneously opening the third ball valve 3 and the fourth ball valve 4 allows antifreeze to be drawn in through an external hose, supplying antifreeze to the entire water system of the road roller through the filter 10 and the water pump, ensuring the entire water system is filled with antifreeze and preventing residual water in the system from freezing and damaging the pipes and sprinkler system components in cold weather. The technical problem is that this water supply component occupies a significant amount of space in the engine compartment and is cumbersome to operate. Summary of the Invention

[0004] Purpose of the invention: The purpose of this invention is to provide a multi-functional valve for a road roller sprinkler system that can realize the supply and discharge of water from the sprinkler tank, the supply of antifreeze, and the shut-off of all these functions, while saving space and being easy to operate.

[0005] Technical solution: The present invention provides a multi-functional valve for a road roller sprinkler system, comprising a valve body, and four interfaces arranged clockwise around the valve body: a sprinkler tank inlet, a drain outlet, a water supply outlet, and an antifreeze supply outlet. Adjacent interfaces are at 90° to each other, and each interface is connected to the inner cavity of the valve body through a corresponding water channel. A valve core is provided in each water channel.

[0006] The valve body cavity is equipped with a cam mechanism, which includes a first two-position cam, a second two-position cam and a first cam arranged from top to bottom. The first two-position cam is used to control the opening and closing of the valve core in the water supply channel, the second two-position cam is used to control the opening and closing of the valve core in the water inlet channel of the sprinkler tank, and the first cam is used to control the opening and closing of the valve core in the water outlet channel and the antifreeze supply channel.

[0007] The two protrusions on the outer sides of the first and second cams face the water inlet and antifreeze inlet of the sprinkler tank, respectively. The two protrusions on the outer sides of the second and second cams face the antifreeze inlet and water inlet, respectively. The protrusion on the outer side of the first cam faces the water inlet of the sprinkler tank. At this time, all four valve cores are closed.

[0008] The valve body is equipped with a water distribution shaft mechanism. When the water distribution shaft mechanism rotates, it can drive three cams to rotate synchronously. When the water distribution shaft mechanism rotates to different functional positions, the protrusions on the outer side of the cams open the corresponding valve cores and open the corresponding water channels to realize the functions of water supply, water discharge, antifreeze supply, or shutdown.

[0009] Furthermore, the valve core includes a retainer, a valve core body, a spring, and a spring seat, with the spring seat fixed in the waterway; the valve core body has a conical structure and is coaxially fixed on a rod, with the conical side of the valve core body facing the inner cavity of the valve body, and the retainer is fixed in the waterway at one end near the inner cavity of the valve body; one end of the rod passes through the retainer, and the other end passes through the spring and the spring seat; under the action of the spring, the valve core body closes the waterway through the first O-ring seal on the valve core body; the protrusion on the outer side of the cam cooperates with the rod to lift the valve core body, thereby opening the valve core.

[0010] Furthermore, the inner wall of the waterway has internal threads, and the spring seat is threadedly connected in the waterway and can be adjusted in position.

[0011] Furthermore, the water distribution shaft mechanism includes a shaft body and a shaft support, with the shaft body rotatably mounted on the shaft support; a disc is fixedly connected to the upper end of the shaft body, and the upper and lower sides of the valve body cavity are sealed by a second O-ring seal located on the lower side of the disc and the upper side of the shaft support; three cams are mounted on the shaft body.

[0012] Furthermore, the shaft has a square cross-section, and three cams with matching square holes are sequentially fitted onto the shaft.

[0013] Furthermore, the multi-functional valve for the road roller sprinkler system also includes a wrench, and a square groove is provided on the top of the disc for rotating the disc in conjunction with the wrench.

[0014] Furthermore, the square slot is sized to fit a standard ratchet wrench, allowing for operation when the wrench is lost.

[0015] Furthermore, the outer ring of the disc is provided with four spherical grooves, which are used to cooperate with the spring steel balls at the corresponding positions of the valve body to provide positioning of the functional position and tactile feel during operation.

[0016] Furthermore, the upper surface of the valve body is marked with position indicators for water supply, water discharge, shutdown, and coolant; arrows are provided on the panel to indicate the current function position.

[0017] Furthermore, piping markings are provided at the interfaces around the valve body, namely W, T, S and C, where W represents the water inlet of the sprinkler tank, T represents the drain outlet, S represents the water supply outlet, and C represents the antifreeze supply outlet.

[0018] Beneficial Effects: Compared with existing technologies, this invention has the following significant advantages: The multi-functional valve provided by this invention integrates four valve cores on a single valve body and is driven by multiple cams. It can achieve water supply and discharge from the sprinkler tank, antifreeze supply, and the closure of all these functions. The valve body is compact, simplifying the structure of the road roller's water system and reducing the space occupied by the water valves and fittings required to achieve the above functions, thus reducing the space occupied in the engine compartment. In terms of user experience, it greatly simplifies the assembly process and significantly improves assembly efficiency. Users do not need to operate multiple valves to combine the corresponding functions; they only need to rotate the water distribution shaft mechanism, making it convenient for users to operate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the water supply components of an existing road roller sprinkler system;

[0020] Figure 2 This is a schematic diagram of the structure of a multi-functional valve for a road roller sprinkler system provided in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the valve core structure in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the water distribution shaft mechanism in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the markings on the valve body in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the opening and closing relationship of the valve cores of each functional position of the multifunctional valve in an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of a multi-functional valve installed in the water spraying system of a road roller in an embodiment of the present invention. Detailed Implementation

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] Appendix Figures 1 to 7 The accompanying figure labels are as follows:

[0028] 1. First ball valve; 2. Second ball valve; 3. Third ball valve; 4. Fourth ball valve; 5. Sprinkler tank; 6. First elbow; 7. First hose; 8. Four-way ball valve seat; 9. Second hose; 10. Filter; 11. Valve body; 111. Position indicator; 112. Piping indicator; 12. Valve core; 121. Cage; 122. First O-ring seal; 123. Valve core body; 124. Spring; 125. Spring seat; 13. Cam mechanism; 131. First two-position cam; 132. Second two-position cam; 133. First position cam; 14. Water distribution shaft mechanism; 141. Square groove; 142. Spherical groove; 143. Shaft support; 144. Second O-ring seal; 15. Wrench; 16. Second elbow; 17. Third hose; 18. Fourth hose.

[0029] like Figure 2 As shown, this embodiment of the invention provides a multi-functional valve for a road roller sprinkler system, including a valve body 11, four valve cores 12, a cam mechanism 13, a water distribution shaft mechanism 14, and a wrench 15. The valve body 11 has four interfaces arranged clockwise around its perimeter: a sprinkler tank inlet, a drain outlet, a water supply outlet, and an antifreeze supply outlet. Adjacent interfaces are at 90° intervals. Each interface is connected to the inner cavity of the valve body 11 through a corresponding water channel. The four valve cores 12 are respectively disposed in the four water channels.

[0030] Combination Figure 3 The valve core 12 includes a retainer 121, a valve core body 123, a spring 124, and a spring seat 125. The inner wall of the water channel has internal threads, and the spring seat 125 is threaded into the water channel and can be adjusted in position. The valve core body 123 has a conical structure and is coaxially fixed to a rod, with the conical surface of the valve core body 123 facing the inner cavity of the valve body 11. The retainer 121 is fixed in the water channel at one end near the inner cavity of the valve body 11. One end of the rod passes through the retainer 121, and the other end passes through the spring 124 and the spring seat 125. Under the action of the spring 124, the valve core body 123 seals the water channel through a first O-ring seal 122 on the valve core body 123.

[0031] The cam mechanism 13 is housed within the inner cavity of the valve body 11. (Combined) Figure 4 The cam mechanism 13 includes a first two-position cam 131, a second two-position cam 132, and a first-position cam 133 arranged sequentially from top to bottom. The first two-position cam 131 controls the opening and closing of the valve core 12 in the water supply channel, the second two-position cam 132 controls the opening and closing of the valve core 12 in the water inlet channel of the sprinkler tank, and the first-position cam 133 controls the opening and closing of the valve core 12 in the water outlet channel and the antifreeze supply channel (i.e., the first-position cam 133 controls two valve cores). Specifically, the protrusion on the outer side of the cam cooperates with the rod to lift the valve core body 123, causing the valve core 12 to open and compress the spring 124; when the protrusion on the outer side of the cam is disengaged from the rod, the spring 124 returns the valve core body 123 to its original position, and the valve core 12 closes.

[0032] A water distribution shaft mechanism 14 is mounted on the valve body 11. This mechanism 14 includes a shaft and a shaft support 143, with the shaft rotatably mounted on the shaft support 143. A disc is fixedly connected to the upper end of the shaft, and the upper and lower sides of the inner cavity of the valve body 11 are sealed by a second O-ring 144 located on the lower side of the disc and the upper side of the shaft support 143. The shaft has a square cross-section, and three cams with matching square holes are sequentially fitted onto the shaft. Thus, when the shaft rotates, the three cams can rotate synchronously.

[0033] Combination Figure 5 The top of the disc is provided with a square groove 141, which in this embodiment is 1 / 2 inch in size, for rotation operation with the included wrench 5. Even if the wrench 15 is lost, a 1 / 2-inch ratchet wrench can be used. The outer ring of the disc is provided with four spherical grooves 142 for engaging with spring steel balls at corresponding positions on the valve body 11, providing positioning of the functional position and tactile feedback during operation.

[0034] The upper surface of the valve body 11 is marked with position indicators 111, namely water supply, water discharge, shut-off, and coolant; arrows are provided on the panel to indicate the current function position. Piping indicators 112 are provided at the interfaces around the valve body 11, namely W, T, S, and C, where W represents the water tank inlet, T represents the water discharge outlet, S represents the water supply outlet, and C represents the antifreeze supply outlet.

[0035] When the water distribution shaft mechanism 14 rotates, it can drive three cams to rotate synchronously. When the water distribution shaft mechanism 14 rotates to different functional positions, the protrusion on the outer side of the cam opens the corresponding valve core 12, opens the corresponding water passage, and realizes the functions of water supply, water discharge, antifreeze supply or shutdown.

[0036] Figure 4 The diagram shows the state with all functions off. The two protrusions on the outer side of the first and second position cams 131 are facing the water tank inlet and the antifreeze inlet, respectively. The two protrusions on the outer side of the second and second position cams 132 are facing the antifreeze inlet and the water inlet, respectively. The protrusion on the outer side of the first position cam 133 is facing the water tank inlet. At this time, all four valve cores 12 are closed. Figure 6 Furthermore, the opening and closing relationships of the four valve cores in different functions of the multi-functional valve are given.

[0037] Figure 7 In the middle section, the W port on the valve body 11 is connected to the water tank 5 via the third hose 17 and the second elbow 16, and the T port on the valve body 11 is connected to the filter 10 via the fourth hose 18, at which point water can be supplied to the water pump through the filter 10. To achieve other functions, it can be configured according to... Figure 6 Pipeline connections will not be detailed here.

[0038] The multi-functional valve for road roller sprinkler systems proposed in this invention simplifies the water supply system components by integrating multiple ball valves into a single valve body. It also simplifies operation, reducing the need to operate multiple valves to perform corresponding functions to a single operation involving rotating the water distribution shaft mechanism, making it easier for users to operate.

Claims

1. A multi-functional valve for a road roller sprinkler system, characterized in that, Includes valve body (11), and four interfaces are provided around the valve body (11) clockwise: water inlet, water outlet, water supply, and antifreeze supply. Adjacent interfaces are at 90° to each other. Each interface is connected to the inner cavity of the valve body (11) through a corresponding water channel. Each water channel is provided with a valve core (12). A cam mechanism (13) is provided in the inner cavity of the valve body (11). The cam mechanism (13) includes a first two-position cam (131), a second two-position cam (132), and a first cam (133) arranged sequentially from top to bottom. The first two-position cam (131) is used to control the opening and closing of the valve core (12) in the water supply channel, the second two-position cam (132) is used to control the opening and closing of the valve core (12) in the water inlet channel of the sprinkler tank, and the first cam (133) is used to control the opening and closing of the valve core (12) in the water outlet channel and the antifreeze supply channel. The two protrusions on the outer side of the first and second cams (131) face the water inlet and the antifreeze inlet of the sprinkler tank, respectively. The two protrusions on the outer side of the second and second cams (132) face the antifreeze inlet and the water inlet, respectively. The protrusion on the outer side of the first cam (133) faces the water inlet of the sprinkler tank. At this time, all four valve cores (12) are closed. A water distribution shaft mechanism (14) is installed on the valve body (11). When the water distribution shaft mechanism (14) rotates, it can drive three cams to rotate synchronously. When the water distribution shaft mechanism (14) rotates to different functional positions, the protrusion on the outside of the cam opens the corresponding valve core (12) and opens the corresponding water passage to realize the functions of water supply, water discharge, antifreeze supply or shutdown.

2. The multi-functional valve for a road roller sprinkler system according to claim 1, characterized in that, The valve core (12) includes a retainer (121), a valve core body (123), a spring (124), and a spring seat (125). The spring seat (125) is fixed in the waterway. The valve core body (123) is a conical structure and is coaxially fixed on a rod. The conical side of the valve core body (123) faces the inner cavity of the valve body (11). The retainer (121) is fixed in the waterway at one end near the inner cavity of the valve body (11). One end of the rod passes through the retainer (121), and the other end passes through the spring (124) and the spring seat (125). Under the action of the spring (124), the valve core body (123) closes the waterway through the first O-ring seal (122) on the valve core body (123). The protrusion on the outside of the cam cooperates with the rod to lift the valve core body (123) and open the valve core (12).

3. The multi-functional valve for a road roller sprinkler system according to claim 2, characterized in that, The inner wall of the waterway has internal threads, and the spring seat (125) is threaded into the waterway and can be adjusted in position.

4. The multi-functional valve for a road roller sprinkler system according to claim 1, characterized in that, The water distribution shaft mechanism (14) includes a shaft and a shaft support (143). The shaft is rotatably mounted on the shaft support (143). A disc is fixedly connected to the upper end of the shaft. The upper and lower sides of the inner cavity of the valve body (11) are sealed by a second O-ring (144) set on the lower side of the disc and the upper side of the shaft support (143). Three cams are mounted on the shaft.

5. The multi-functional valve for a road roller sprinkler system according to claim 4, characterized in that, The shaft has a square cross-section, and three cams with matching square holes are sequentially fitted onto the shaft.

6. The multi-functional valve for a road roller sprinkler system according to claim 4, characterized in that, It also includes a wrench (15), with a square groove (141) on the top of the disc for cooperating with the wrench (15) to rotate the disc.

7. The multi-functional valve for a road roller sprinkler system according to claim 6, characterized in that, The square groove (141) is sized to fit a standard ratchet wrench, which is used when the wrench (15) is lost.

8. The multi-functional valve for a road roller sprinkler system according to claim 4, characterized in that, The outer ring of the disc is provided with four spherical grooves (142) to cooperate with the spring steel balls at the corresponding positions of the valve body (11) to provide positioning of the functional position and tactile feel during operation.

9. The multi-functional valve for a road roller sprinkler system according to claim 4, characterized in that, The valve body (11) has position markings (111) on its upper surface, which are water supply, water discharge, shutdown and coolant; the panel has arrows to indicate the current function position.

10. The multi-functional valve for a road roller sprinkler system according to claim 1, characterized in that, Piping markings (112) are provided at the interfaces around the valve body (11), namely W, T, S and C, where W represents the water inlet of the sprinkler tank, T represents the water outlet, S represents the water supply outlet and C represents the antifreeze supply outlet.

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