Three-way valve with good sealing performance

Abstract

The utility model discloses a three-way valve with good sealing performance, and relates to the technical field of three-way valves. Comprising a valve seat and a valve cover, a first flow guide channel, a second flow guide channel and a third flow guide channel are formed in the valve seat, a first through hole and a second through hole are formed in the upper side and the lower side of the first flow guide channel respectively, the valve cover is installed above the valve seat, a valve rod is installed on the valve cover, and a sleeve is installed at the lower end of the valve cover; and a flow guide hole is formed in the outer side of the sleeve, clamping grooves are formed in the left side and the right side of the valve cover correspondingly, a positioning groove is formed in the valve seat, and clamping blocks are connected to the clamping grooves in a clamped mode. According to the three-way valve with the good sealing performance, when the valve element needs to be cleaned, the threaded rod can be rotated to be separated from the positioning block, then the clamping block is pulled out, the valve cover can be detached, then the valve cover drives the sleeve, the valve rod and the valve element below the valve cover to move upwards, and the valve element can be taken out to be cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of three-way valves, in particular to a three-way valve with good sealing performance. Background Art

[0002] The three-way valve is a commonly used pipeline connection valve, also known as a T-type valve. It has one inlet and two outlets (or conversely, two inlets and one outlet), which can switch or mix the fluid between the two outlets.

[0003] Three-way valves have many uses, one of the most common uses is to control the flow direction of fluid media. By rotating the valve, the fluid can be directed from one inlet to different outlets, or the fluids from two inlets can be mixed and discharged through one outlet. This ability to control the flow direction makes three-way valves widely used in many fields, such as heating systems, air conditioning systems, fluid control in chemical processes, etc.

[0004] For example, a three-way valve with good sealing performance and low temperature resistance and crack resistance, with publication number CN215371084U, rotates the rotating block by a handle to adjust the screw rod and the connecting rod to rise, thereby controlling the block to rise, and cooperates with the block to block the first outlet pipe, so that the water flows out from the second outlet pipe, and controls the block to descend, blocks the second outlet pipe, and the water flows out from the first outlet pipe, realizing the diversion of the water flow. However, the device still has certain defects;

[0005] During long-term use, a large amount of stains will adhere to the surface of the block, and it needs to be cleaned regularly. However, the block is located inside the valve seat and has no detachable structure, which makes it inconvenient to remove the internal block and thus inconvenient to clean the block.

[0006] Therefore, we propose a three-way valve with good sealing performance to solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to provide a three-way valve with good sealing performance to solve the problem raised by the above background technology that the existing three-way valve block on the market will have a large amount of stains attached to its surface during long-term use, and it needs to be cleaned regularly, while the block is located inside the valve seat and no detachable structure is provided, which makes it inconvenient to disassemble the internal block and thus inconvenient to clean the block.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a three-way valve with good sealing performance, comprising a valve seat and a valve cover, the interior of the valve seat is provided with a first guide channel, a second guide channel and a third guide channel, and the upper and lower sides of the first guide channel are respectively provided with a first through hole and a second through hole, a valve cover is installed above the valve seat, and a valve stem is installed on the valve cover, and a valve core is installed at the lower end of the valve stem, a sleeve is installed at the lower end of the valve cover, and a guide hole is provided on the outer side of the sleeve, a clamping groove is provided on both sides of the valve cover, and a positioning block is installed at the lower end of the valve cover, a positioning groove is provided on the valve seat, a clamping block is clamped on the clamping groove, and the clamping block and the positioning block are connected by a threaded rod.

[0009] Preferably, the diameter of the first through hole is larger than the diameter of the second through hole, and the diameter of the second through hole is smaller than the length of the valve core.

[0010] The above structural design facilitates the installation of the sleeve under the valve cover. When the valve core moves up and down under force, the bottom end of the sleeve or the second through hole can be blocked to achieve flow diversion.

[0011] Preferably, the valve stem and the valve cover are connected by a threaded structure, and the valve stem and the valve core are fixedly connected, and sealing gaskets are installed on the upper and lower sides of the valve core. The sealing gasket on the upper side of the valve core is a half-spliced ​​structure design, and the sealing gasket and the valve core are designed as a detachable structure.

[0012] With the above structural design, the valve core below can be driven to move up and down by rotating the valve stem, thereby facilitating adjustment of the position of the valve core.

[0013] Preferably, the sealing gasket and the valve core are connected via an adhesive layer.

[0014] The above structural design makes it easy to install and replace the sealing gasket. At the same time, the manufacturing process of the sealing gasket and the valve core is relatively simple and the manufacturing cost is low.

[0015] Preferably, a rubber bulge is installed on one side of the sealing gasket close to the valve core, and the rubber bulge and the limiting groove can be mutually engaged, and the limiting groove is provided on the upper and lower sides of the valve core.

[0016] The above structural design facilitates disassembly and assembly of the sealing gasket and the valve core, thereby facilitating replacement of the sealing gasket, and the connection between the sealing gasket and the valve core is more environmentally friendly.

[0017] Preferably, a positioning groove is provided on the outer side of the sealing gasket, a fixing screw is provided on the positioning groove, and a threaded structure connection is formed between the fixing screw and the valve core.

[0018] With the above structural design, the sealing gasket is fixed to the valve core by fixing screws. On the one hand, it is easy to replace the sealing gasket. On the other hand, the fixing method of fixing screws makes the sealing gasket and the valve core more firmly fixed and will not separate from each other.

[0019] Preferably, an abutment groove is provided on the outer side of the positioning block, and the clamping block can be clamped with the abutment groove.

[0020] With the above structural design, when the valve core needs to be cleaned, the threaded rod can be rotated to disengage the threaded rod from the positioning block, and then the clamping block can be pulled out to disassemble the valve cover, and then the valve cover drives the sleeve, valve stem and valve core below to move upward, and the valve core can be taken out for cleaning. When installing the valve cover, align the positioning block below the valve cover with the positioning groove and abut it in the positioning groove, and then insert the clamping block into the clamping groove, screw the threaded rod on the clamping block, connect the threaded rod with the positioning block, and the valve cover can be fixed. At this time, the lower end of the positioning block abuts with the abutting groove on the positioning block, thereby further improving the firmness of the valve cover fixation.

[0021] Compared with the prior art, the utility model has the following beneficial effects: the three-way valve with good sealing performance:

[0022] 1. A valve core is provided. By rotating the valve stem, the valve core below can be driven to move up and down, so as to facilitate the adjustment of the position of the valve core. When the valve core moves up and down under force, the bottom end of the sleeve or the second through hole can be blocked to achieve flow diversion;

[0023] 2. A sealing gasket is provided. When the bottom end of the sleeve or the second through hole is blocked by the valve core, the sealing gasket can abut against the bottom end of the sleeve or the surface of the second through hole, thereby improving the sealing performance when blocking the bottom end of the sleeve and the second through hole;

[0024] Furthermore, when the valve core needs to be cleaned, the threaded rod can be rotated to disengage the threaded rod from the positioning block, and then the block can be pulled out to disassemble the valve cover, and then the valve cover drives the sleeve, valve stem and valve core below to move upward, and the valve core can be taken out for cleaning;

[0025] Furthermore, when installing the valve cover, align the positioning block under the valve cover with the positioning groove and abut it in the positioning groove, then insert the clamping block into the clamping groove, screw the threaded rod on the clamping block, connect the threaded rod with the positioning block, and the valve cover can be fixed. At this time, the lower end of the positioning block abuts with the abutment groove on the positioning block, thereby further improving the firmness of the valve cover fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0027] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0028] Figure 3 This is a schematic diagram of the position structure of the positioning block and the abutment groove of the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the first embodiment of the utility model;

[0030] Figure 5 This is a schematic diagram of the sealing gasket structure of the second embodiment of the utility model;

[0031] Figure 6 This is a schematic diagram of the valve core structure of the second embodiment of the utility model;

[0032] Figure 7 This is a structural schematic diagram of the third embodiment of the present utility model.

[0033] In the figure: 1. valve seat; 2. first guide channel; 3. second guide channel; 4. third guide channel; 5. first through hole; 6. second through hole; 7. valve cover; 8. valve stem; 9. valve core; 10. sealing gasket; 11. adhesive layer; 12. limit groove; 13. rubber protrusion; 14. positioning groove; 15. fixing screw; 16. sleeve; 17. guide hole; 18. clamping groove; 19. positioning block; 20. positioning groove; 21. abutting groove; 22. clamping block; 23. threaded rod. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Embodiment 1

[0036] See also Figure 1-4The utility model provides a technical solution: comprising a valve seat 1 and a valve cover 7, wherein a first flow guiding channel 2, a second flow guiding channel 3 and a third flow guiding channel 4 are provided inside the valve seat 1, and a first through hole 5 and a second through hole 6 are provided on the upper and lower sides of the first flow guiding channel 2, respectively. The diameter of the first through hole 5 is greater than the diameter of the second through hole 6, and the diameter of the second through hole 6 is less than the length of the valve core 9, so as to facilitate the installation of the sleeve 16 under the valve cover 7. When the valve core 9 moves up and down under force, the bottom end of the sleeve 16 or the second through hole 6 can be moved. 6 is blocked to achieve diversion, a valve cover 7 is installed above the valve seat 1, and a valve stem 8 is installed on the valve cover 7, the valve stem 8 and the valve cover 7 are connected by a threaded structure, and the valve stem 8 and the valve core 9 are fixedly connected, and sealing gaskets 10 are installed on the upper and lower sides of the valve core 9, the sealing gasket 10 on the upper side of the valve core 9 is a half-spliced ​​structure design, and the sealing gasket 10 and the valve core 9 are detachable. The valve core 9 below can be driven to move up and down by rotating the valve stem 8, so as to facilitate the adjustment of the position of the valve core 9.

[0037] A valve core 9 is installed at the lower end of the valve stem 8, and the sealing gasket 10 is connected to the valve core 9 by an adhesive layer 11, which is convenient for installing and replacing the sealing gasket 10. At the same time, the manufacturing process of the sealing gasket 10 and the valve core 9 is relatively simple, and the manufacturing cost is low. A sleeve 16 is installed at the lower end of the valve cover 7, and a guide hole 17 is opened on the outer side of the sleeve 16. A clamping groove 18 is opened on the left and right sides of the valve cover 7, and a positioning block 19 is installed at the lower end of the valve cover 7. An abutment groove 21 is opened on the outer side of the positioning block 19, and the clamping block 22 can be mutually clamped with the abutment groove 21. When the valve core 9 needs to be cleaned, the threaded rod 23 can be rotated to disengage the threaded rod 23 from the positioning block 19, and then the clamping block 22 can be pulled out, and the valve cover 7 can be cleaned. Disassemble, and then the valve cover 7 drives the sleeve 16, valve stem 8 and valve core 9 below to move upward, and the valve core 9 can be taken out for cleaning. When installing the valve cover 7, align the positioning block 19 under the valve cover 7 with the positioning groove 20, and abut against the positioning groove 20, and then insert the clamping block 22 into the clamping groove 18, screw the threaded rod 23 on the clamping block 22, so that the threaded rod 23 is connected to the positioning block 19, and the valve cover 7 can be fixed. At this time, the lower end of the positioning block 19 abuts against the abutting groove 21 on the positioning block 19, thereby further improving the firmness of the valve cover 7. A positioning groove 20 is provided on the valve seat 1, and a clamping block 22 is clamped on the clamping groove 18, and the clamping block 22 is connected to the positioning block 19 through a threaded rod 23.

[0038] Embodiment 2

[0039] See also Figure 5-6The difference between this embodiment and the first embodiment is that a rubber protrusion 13 is installed on the side of the sealing gasket 10 close to the valve core 9, and the rubber protrusion 13 and the limiting groove 12 can be mutually clamped, and the limiting groove 12 is opened on the upper and lower sides of the valve core 9, which is convenient for disassembly and assembly of the sealing gasket 10 and the valve core 9, thereby facilitating the replacement of the sealing gasket 10, and the connection between the sealing gasket 10 and the valve core 9 is more environmentally friendly.

[0040] Embodiment 3

[0041] See also Figure 7 The difference between this embodiment and the first embodiment is that a positioning groove 14 is provided on the outer side of the sealing gasket 10, and a fixing screw 15 is provided on the positioning groove 14. A threaded structure is formed between the fixing screw 15 and the valve core 9. The sealing gasket 10 is fixed to the valve core 9 by the fixing screw 15. On the one hand, it is convenient to replace the sealing gasket 10. On the other hand, the fixing method of the fixing screw 15 makes the sealing gasket 10 and the valve core 9 more firmly fixed and will not separate from each other.

[0042] Working principle: When using the three-way valve with good sealing performance, first, by rotating the valve stem 8, the valve core 9 below can be driven to move up and down, thereby facilitating the adjustment of the position of the valve core 9. When the valve core 9 moves up and down under force, the bottom end of the sleeve 16 or the second through hole 6 can be blocked to achieve diversion.

[0043] When the valve core 9 needs to be cleaned, the threaded rod 23 can be rotated to disengage the threaded rod 23 from the positioning block 19, and then the clamping block 22 can be pulled out to disassemble the valve cover 7, and then the valve cover 7 drives the sleeve 16, valve stem 8 and valve core 9 below to move upward, and the valve core 9 can be taken out for cleaning. When installing the valve cover 7, the positioning block 19 below the valve cover 7 is aligned with the positioning groove 20 and abutted against the positioning groove 20, and then the clamping block 22 is inserted into the clamping groove 18, and the threaded rod 23 is screwed into the clamping block 22, so that the threaded rod 23 is connected to the positioning block 19, and the valve cover 7 can be fixed. At this time, the lower end of the positioning block 19 abuts against the abutting groove 21 on the positioning block 19, thereby further improving the firmness of the fixing of the valve cover 7. Thus, a series of work is completed. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A three-way valve with good sealing performance, comprising a valve seat (1) and a valve cover (7), characterized in that: The valve seat (1) is provided with a first flow guide channel (2), a second flow guide channel (3) and a third flow guide channel (4) inside, and the first flow guide channel (2) is provided with a first through hole (5) and a second through hole (6) on the upper and lower sides respectively. A valve cover (7) is installed above the valve seat (1), and a valve stem (8) is installed on the valve cover (7), and a valve core (9) is installed at the lower end of the valve stem (8). A sleeve (16) is installed at the lower end of the valve cover (7), and a flow guide hole (17) is provided on the outer side of the sleeve (16). A clamping groove (18) is provided on the left and right sides of the valve cover (7), and a positioning block (19) is installed at the lower end of the valve cover (7). A positioning groove (20) is provided on the valve seat (1), and a clamping block (22) is clamped on the clamping groove (18), and the clamping block (22) and the positioning block (19) are connected by a threaded rod (23).

2. The three-way valve with good sealing performance according to claim 1, characterized in that: The diameter of the first through hole (5) is greater than the diameter of the second through hole (6), and the diameter of the second through hole (6) is smaller than the length of the valve core (9).

3. The three-way valve with good sealing performance according to claim 1, characterized in that: The valve stem (8) and the valve cover (7) are connected by a threaded structure, and the valve stem (8) and the valve core (9) are fixedly connected. In addition, sealing gaskets (10) are installed on both the upper and lower sides of the valve core (9). The sealing gasket (10) on the upper side of the valve core (9) is a half-spliced ​​structure design, and the sealing gasket (10) and the valve core (9) are a detachable structure design.

4. The three-way valve with good sealing performance according to claim 3, characterized in that: The sealing gasket (10) and the valve core (9) are connected via an adhesive layer (11).

5. The three-way valve with good sealing performance according to claim 3, characterized in that: A rubber bulge (13) is installed on the side of the sealing gasket (10) close to the valve core (9), and the rubber bulge (13) and the limiting groove (12) can be mutually clamped, and the limiting groove (12) is arranged on the upper and lower sides of the valve core (9).

6. The three-way valve with good sealing performance according to claim 3, characterized in that: A positioning groove (14) is provided on the outer side of the sealing gasket (10), a fixing screw (15) is provided on the positioning groove (14), and a threaded structure connection is formed between the fixing screw (15) and the valve core (9).

7. The three-way valve with good sealing performance according to claim 1, characterized in that: An abutment groove (21) is provided on the outer side of the positioning block (19), and the clamping block (22) can be clamped with the abutment groove (21).

Images