Fluid distribution valve

Abstract

The invention discloses a fluid distribution valve, and belongs to the field of valves, the fluid distribution valve comprises a valve seat, an inlet pipe is arranged at the bottom of the valve seat, outlet pipes are arranged at the two ends of the valve seat, a valve core mechanism is arranged in the middle of the valve seat, and the valve core mechanism comprises a valve core rotating drum movably mounted in the valve seat through a valve rod; the valve element rotating cylinder is provided with a fluid channel matched with the inlet pipe and the outlet pipe, a compensation mechanism is arranged on the valve element rotating cylinder through a clamping groove, the valve element rotating cylinder can be tightly attached to the inner wall of the valve seat all the time through the compensation mechanism, and the compensation mechanism comprises an installation seat arranged in the clamping groove. A cushion block attached to the inner wall of the valve seat is arranged on the installation seat through an elastic assembly. The fluid distribution valve can well adapt to tiny deformation between the valve element and the valve seat through the rubber cushion block capable of elastically stretching out and drawing back, the tight attaching state is kept all the time, and therefore medium leakage is effectively prevented, and the sealing performance of the valve is improved.

Description

Technical Field

[0001] The present invention relates to the field of valve technology, and in particular to a fluid distribution valve. Background Art

[0002] A fluid distribution valve is a device that accurately controls the flow direction, flow rate and pressure of a fluid by changing the opening and closing state of a fluid channel or adjusting the cross-sectional area of ​​the channel. A fluid distribution valve can accurately control the flow direction of a fluid in a pipeline system, ensuring that the fluid flows along a predetermined path, thereby achieving coordinated operation of each link in the process.

[0003] It is usually composed of a valve body, a valve core, and a sealing element. The valve core rotates under the drive of an actuator (such as a manual, pneumatic, electric or hydraulic device) to realize the opening and closing state of the fluid channel and the switching of the flow direction. Since the valve core is movably installed inside the valve body, the degree of fit between the valve core and the inner wall of the valve seat affects the sealing of the distribution valve. When the distribution valve is in use, temperature changes will cause the materials of the valve core and the valve seat to expand and contract, thereby affecting their fitting clearance and generating a gap. At this time, since the gap between the valve core and the valve seat becomes larger, the sealing effect of the distribution valve becomes worse, affecting the use of the distribution valve. Summary of the invention

[0004] The purpose of the present invention is to propose a fluid distribution valve in order to solve the problem that the existing temperature change will cause the materials of the valve core and the valve seat to expand and contract, thereby affecting their fitting clearance, generating gaps, and causing the sealing effect of the distribution valve to deteriorate.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technology: a fluid distribution valve, comprising a valve seat, an inlet pipe is arranged at the bottom of the valve seat, outlet pipes are arranged at both ends of the valve seat, a valve core mechanism is arranged at the middle position of the valve seat, and a filter assembly is arranged inside the inlet pipe;

[0006] The valve core mechanism includes a valve core rotating cylinder movably installed in the valve seat through a valve stem, a fluid channel matching the inlet pipe and the outlet pipe is opened on the valve core rotating cylinder, and a compensation mechanism is arranged on the valve core rotating cylinder through a slot, and the valve core rotating cylinder can always fit tightly with the inner wall of the valve seat through the compensation mechanism.

[0007] As a further description of the above technical solution: the compensation mechanism includes a mounting seat arranged in the slot, and a cushion block that fits with the inner wall of the valve seat is arranged on the mounting seat through an elastic component.

[0008] As a further description of the above technical solution: the elastic component includes a pad connected to the pad block, a second spring is arranged on the pad through a connecting rod penetrating the mounting seat, and a limited end is arranged at one end of the connecting rod away from the pad.

[0009] As a further description of the above technical solution: the cushion block is made of rubber material, and at least two cavities arranged along the length direction of the cushion block are provided inside the cushion block.

[0010] As a further description of the above technical solution: a limit block is arranged at one end of the mounting seat through the mounting groove, and a first spring is arranged between the limit block and the inner wall of the mounting groove;

[0011] The valve core rotating cylinder is provided with a positioning hole matched with the limiting block.

[0012] As a further description of the above technical solution: the filter assembly includes a positioning plate arranged in the inlet pipe, and a filter screen is arranged on the positioning plate through a fixing frame.

[0013] As a further description of the above technical solution: a positioning rod penetrating the fixing frame is arranged on the positioning plate, and a third spring is sleeved on the positioning rod at a position between the positioning plate and the fixing frame.

[0014] As a further description of the above technical solution: a threaded end is provided on one end of the positioning rod away from the positioning plate, and a locking nut abutting against the surface of the fixing frame is provided on the threaded end.

[0015] As a further description of the above technical solution: a valve cover is detachably mounted on the top of the valve seat by means of screws, a valve cavity cooperating with the valve core rotating cylinder is formed between the valve seat and the valve cover, and the inlet pipe and the outlet pipe are both connected to the valve cavity.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] 1. The elastic rubber pad can adapt well to the slight deformation between the valve core and the valve seat, and always maintain a close fit, thereby effectively preventing medium leakage, improving the sealing performance of the valve, and avoiding the problem of medium leakage caused by gaps caused by thermal expansion and contraction of the fluid distribution valve due to temperature changes during use;

[0018] 2. The elastic filter can easily adapt to the tiny space and more effectively capture the tiny particles in the fluid, thereby significantly improving the filtration efficiency. The elastic filter can maintain its shape when under pressure, preventing the filter from breaking or deforming, and ensuring the stability of the filtration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It shows a schematic diagram of the overall structure provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the internal structure of a valve seat provided according to an embodiment of the present invention is shown;

[0021] Figure 3 A schematic structural diagram of a valve core mechanism according to an embodiment of the present invention is shown;

[0022] Figure 4 A schematic cross-sectional view of a valve core rotary cylinder provided in an embodiment of the present invention is shown;

[0023] Figure 5 It shows a schematic structural diagram of a compensation mechanism provided according to an embodiment of the present invention;

[0024] Figure 6 A schematic structural diagram of an elastic component provided according to an embodiment of the present invention is shown;

[0025] Figure 7 A partial enlarged schematic diagram of a mounting base provided according to an embodiment of the present invention is shown;

[0026] Figure 8 A cross-sectional schematic diagram of a cushion block provided according to an embodiment of the present invention is shown;

[0027] Fig. 9 A schematic diagram of the structure of an inlet pipe provided according to an embodiment of the present invention is shown;

[0028] Fig.10 A schematic structural diagram of a filter assembly provided according to an embodiment of the present invention is shown.

[0029] Legend:

[0030] 1. Valve seat; 2. Inlet pipe; 3. Outlet pipe; 4. Valve core mechanism; 41. Valve core rotating cylinder; 42. Valve stem; 43. Fluid channel; 44. Slot; 45. Positioning hole; 5. Compensation mechanism; 51. Mounting seat; 511. Mounting slot; 512. Limit block; 513. First spring; 52. Elastic component; 521. Pad; 522. Connecting rod; 523. Second spring; 524. Limit end; 53. Pad; 531. Cavity; 6. Filter component; 61. Positioning plate; 62. Fixing frame; 63. Filter screen; 64. Positioning rod; 65. Third spring; 66. Threaded end; 67. Locking nut. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Reference Figure 1-Figure 10A fluid distribution valve provided in this embodiment includes a valve seat 1, an inlet pipe 2 is arranged at the bottom of the valve seat 1, outlet pipes 3 are arranged at both ends of the valve seat 1, a valve core mechanism 4 is arranged at the middle position of the valve seat 1, a filter assembly 6 is arranged inside the inlet pipe 2, the valve core mechanism 4 includes a valve core rotating cylinder 41 movably installed in the valve seat 1 through a valve stem 42, a fluid channel 43 matching the inlet pipe 2 and the outlet pipe 3 is opened on the valve core rotating cylinder 41, a compensation mechanism 5 is arranged on the valve core rotating cylinder 41 through a slot 44, the valve core rotating cylinder 41 can always be closely fitted with the inner wall of the valve seat 1 through the compensation mechanism 5, a valve cover is detachably installed on the top of the valve seat 1 by screws, a valve cavity matching the valve core rotating cylinder 41 is formed between the valve seat 1 and the valve cover, and the inlet pipe 2 and the outlet pipe 3 are both connected to the valve cavity.

[0033] In the present invention, the inlet pipe 2 and the outlet pipe 3 on the valve seat 1 are respectively connected to the input end and the output end in the pipeline, and the valve stem 42 on the valve core rotating cylinder 41 is connected to an actuator such as a manual, pneumatic, electric or hydraulic device. When the distribution valve is used, the actuator drives the valve core rotating cylinder 41 to rotate through the valve stem 42. The fluid channel 43 on the valve core rotating cylinder 41 is L-shaped, and its bottom is connected to the inlet pipe 2. When the valve core rotating cylinder 41 rotates to make one end of the fluid channel 43 connected to the outlet pipe 3 on the left, the inlet pipe 2 and the outlet pipe 3 on the left form a passage to realize the circulation of the fluid. When the actuator drives the valve core rotating cylinder 41 to rotate, and the valve core rotating cylinder 41 rotates 180 degrees, one end of the fluid channel 43 is connected to the outlet pipe 3 on the right. At this time, the inlet pipe 2 and the outlet pipe 3 on the right form a passage to realize the distribution of the fluid. When the pipeline needs to be closed, the valve core rotating cylinder 41 rotates 90 degrees. At this time, one end of the fluid channel 43 is not connected to the two outlet pipes 3, thereby closing the pipeline;

[0034] When the valve core mechanism 4 needs to be inspected and cleaned, the screws on the valve cover are removed, and then the valve cover together with the valve core mechanism 4 are removed from the valve seat 1, and then the valve core mechanism 4 is separated from the valve cover, so that the valve core mechanism 4 can be cleaned and inspected.

[0035] Specifically, Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 8 The compensation mechanism 5 includes a mounting seat 51 arranged in the slot 44, and a pad 53 that fits the inner wall of the valve seat 1 is arranged on the mounting seat 51 through an elastic component 52. The pad 53 is made of rubber material, and at least two cavities 531 arranged along the length direction of the pad 53 are opened inside the pad 53. The elastic component 52 includes a pad 521 connected to the pad 53, and a second spring 523 is arranged on the pad 521 through a connecting rod 522 that penetrates the mounting seat 51, and a limited end 524 is provided at one end of the connecting rod 522 away from the pad 521.

[0036] The mounting seat 51 is box-shaped, with its opening facing the axial position of the valve core rotating cylinder 41. The mounting seat 51 is engaged with the card slot 44 on the valve core rotating cylinder 41. The cushion block 53 on the elastic component 52 is arranged on the valve core rotating cylinder 41 through the mounting seat 51. When the valve core mechanism 4 is in use, the valve core rotating cylinder 41 is located in the valve cavity inside the valve seat 1. At this time, the outer wall of the valve core rotating cylinder 41 is in contact with the inner wall of the valve cavity. The cushion block 53 compresses the gasket 521 under the pressure of the valve seat 1, so that the gasket 521 is compressed. The second spring 523 on the connecting rod 522, when the valve core mechanism 4 and the valve seat 1 expand and contract due to temperature reasons, the thermal expansion and contraction will affect the matching clearance, so that a gap is generated between the valve core rotating cylinder 41 and the inner wall of the valve cavity. At this time, under the action of the second spring 523, the pad 521 presses the pad 53 outward, so that the pad 53 can always fit tightly against the inner wall of the valve cavity, thereby compensating for the gap between the valve core rotating cylinder 41 and the inner wall of the valve cavity, effectively preventing medium leakage, and improving the sealing performance of the valve;

[0037] It should be noted that the rubber gasket 53 has a certain flexibility and can ensure sealing without affecting the rotation of the valve core drum 41. At the same time, the several cavities 531 in the gasket 53 can make the gasket 53 have better resilience, thereby ensuring that the gasket 53 can always maintain a close fit with the inner wall of the valve cavity, avoiding the problem of thermal expansion and contraction of the fluid distribution valve due to temperature changes during use, thereby causing gaps and causing medium leakage. In addition, the gasket 53 can clean the inner wall of the valve cavity when the valve core drum 41 rotates, avoiding impurities in the fluid from adhering to the inner wall of the valve cavity during use and causing wear of the valve core mechanism 4.

[0038] Specifically, Figure 3 , Figure 5 and Figure 7 As shown, a limit block 512 is provided at one end of the mounting seat 51 through the mounting groove 511 , a first spring 513 is provided between the limit block 512 and the inner wall of the mounting groove 511 , and a positioning hole 45 matching with the limit block 512 is opened on the valve core rotating cylinder 41 .

[0039] Among them, when installing the compensation mechanism 5, the limit block 512 is first compressed by the first spring 513 and then shrinks in the installation groove 511, and then the mounting seat 51 is embedded and installed in the slot 44 of the valve core rotating cylinder 41. After the mounting seat 51 is completely inserted into the slot 44, the limit block 512 pops out under the action of the first spring 513 and is stuck in the positioning hole 45 of the valve core rotating cylinder 41, thereby realizing the installation and fixation of the compensation mechanism 5. When disassembling, the limit block 512 is pressed downward by a rod-shaped workpiece to make it disengage from the positioning hole 45, and the compensation mechanism 5 can be disassembled.

[0040] Specifically, Figure 2 , Fig. 9 and Fig.10As shown, the filter assembly 6 includes a positioning plate 61 arranged in the inlet pipe 2, a filter screen 63 is arranged on the positioning plate 61 through a fixed frame 62, a positioning rod 64 is arranged on the positioning plate 61 and passes through the fixed frame 62, and a third spring 65 is sleeved on the positioning rod 64 at a position between the positioning plate 61 and the fixed frame 62.

[0041] Among them, the positioning plate 61 is arranged in a ring shape in the inlet pipe 2, and the filter 63 on the fixed frame 62 can be elastically moved along the length direction of the positioning rod 64 through the third spring 65 on the positioning rod 64. The elastically movable filter 63 can easily adapt to the tiny space and more effectively capture tiny particles in the fluid, thereby significantly improving the filtration efficiency. Moreover, the elastically movable filter 63 can maintain its shape when under pressure, preventing the filter 63 from breaking or deforming, thereby ensuring the stability of the filtration effect.

[0042] It should be noted that a threaded end 66 is provided on the end of the positioning rod 64 away from the positioning plate 61, and a locking nut 67 is provided on the threaded end 66 to abut against the surface of the fixed frame 62. The design of the threaded end 66 and the locking nut 67 can facilitate the disassembly and assembly of the filter 63 on the fixed frame 62, thereby facilitating the inspection and cleaning of the filter 63, thereby ensuring that the filter 63 can always perform an efficient filtering function.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fluid dispensing valve, characterized in that: It comprises a valve seat (1), an inlet pipe (2) is arranged at the bottom of the valve seat (1), outlet pipes (3) are arranged at both ends of the valve seat (1), a valve core mechanism (4) is arranged in the middle of the valve seat (1), and a filter assembly (6) is arranged inside the inlet pipe (2); The valve core mechanism (4) comprises a valve core rotating cylinder (41) movably mounted in the valve seat (1) via a valve stem (42); a fluid channel (43) cooperating with an inlet pipe (2) and an outlet pipe (3) is provided on the valve core rotating cylinder (41); a compensation mechanism (5) is provided on the valve core rotating cylinder (41) via a slot (44); and the valve core rotating cylinder (41) can always fit tightly against the inner wall of the valve seat (1) via the compensation mechanism (5).

2. A fluid dispensing valve according to claim 1, characterized in that: The compensation mechanism (5) comprises a mounting seat (51) arranged in the slot (44), and a cushion block (53) which fits the inner wall of the valve seat (1) is arranged on the mounting seat (51) via an elastic component (52).

3. A fluid dispensing valve according to claim 2, characterized in that: The elastic component (52) comprises a pad (521) connected to the pad block (53); a second spring (523) is arranged on the pad (521) via a connecting rod (522) penetrating the mounting seat (51); and a limiting end (524) is arranged at one end of the connecting rod (522) away from the pad (521).

4. A fluid dispensing valve according to claim 3, characterized in that: The cushion block (53) is made of rubber material, and at least two cavities (531) are provided inside the cushion block (53) and are arranged along the length direction of the cushion block (53).

5. A fluid dispensing valve according to claim 2 or 3, characterized in that: A limit block (512) is provided at one end of the mounting seat (51) through the mounting groove (511), and a first spring (513) is provided between the limit block (512) and the inner wall of the mounting groove (511); The valve core rotating cylinder (41) is provided with a positioning hole (45) which matches the limiting block (512).

6. A fluid dispensing valve according to claim 1, characterized in that: The filter assembly (6) comprises a positioning plate (61) arranged in the inlet pipe (2), and a filter screen (63) is arranged on the positioning plate (61) via a fixing frame (62).

7. A fluid dispensing valve according to claim 6, characterized in that: The positioning plate (61) is provided with a positioning rod (64) penetrating the fixing frame (62), and a third spring (65) is sleeved on the positioning rod (64) at a position between the positioning plate (61) and the fixing frame (62).

8. A fluid dispensing valve according to claim 7, characterized in that: A threaded end (66) is provided on one end of the positioning rod (64) away from the positioning plate (61), and a locking nut (67) abutting against the surface of the fixing frame (62) is provided on the threaded end (66).

9. A fluid dispensing valve according to claim 1, characterized in that: A valve cover is detachably mounted on the top of the valve seat (1) by means of screws, a valve cavity that matches the valve core rotating cylinder (41) is formed between the valve seat (1) and the valve cover, and the inlet pipe (2) and the outlet pipe (3) are both connected to the valve cavity.

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