Triangular valve

Abstract

The utility model provides a triangular valve, and belongs to the technical field of valves. The technical problems that as foreign matter and sewage enter a hand wheel of an existing triangular valve, rotation precision is lowered, and the service life is shortened are solved. A containing cavity with an opening in the rear end is formed in a hand wheel of the triangular valve, a connecting column protruding backwards is formed on the front side wall of the containing cavity, a mounting hole matched with a valve rod in an inserted mode is formed in the rear end face of the connecting column, a stop block is arranged on the front end face of a valve body, and a positioning block or a positioning groove is formed in the rear end face of the connecting column. The stop block is matched with the positioning block or the positioning groove so that the hand wheel can only rotate by 90 degrees relative to the valve body. Foreign matter or water cannot fall onto the positioning block and the stop block through the gap between the hand wheel and the valve body, normal limiting of the positioning block and the stop block cannot be affected, and therefore the triangular valve is good in precision and long in service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, in particular to a triangular valve. Background Art

[0002] The triangle valve is widely used in kitchens and bathrooms. The existing triangle valve includes a valve body, a valve core and a hand wheel. Since the triangle valve requires a hand wheel to control the valve core to rotate 90 degrees to control the opening and closing of the triangle valve, it is necessary to position the rotation angle of the hand wheel.

[0003] At present, the existing triangular valve is shown in the invention patent with patent number 201010616819.2. The rotation angle of the handle (hand wheel) of this invention patent is achieved by the cooperation of the stop block protruding outward from the outer peripheral wall of the valve body and the stop convex surface set on the inner peripheral surface of the handle. However, the above triangular valve has the following problems:

[0004] 1. A stop protrusion is formed between two adjacent stop convex surfaces, and there is a large cavity between the two stop protrusions. The existence of the cavity leads to a large gap between the inner side of the handwheel and the outer side wall of the valve body. In actual use, sewage, hair, vegetable leaves and other garbage from the bathroom or kitchen can easily enter the gap or enter the handwheel through the gap. When the above garbage enters between the stop block and the stop convex surface, the handwheel cannot be rotated to 90 degrees, causing the handwheel to be unable to fully open the triangular valve or the handwheel to be unable to fully close the triangular valve, resulting in water leakage, which affects the service life of the triangular valve.

[0005] 2. The connection between the handle and the rear end of the valve core is plugged in and fixed, and the stability of the connection is poor. The handle is likely to move outward during use, thereby further expanding the gap between the handle and the valve body, causing the above-mentioned problem to worsen. Summary of the invention

[0006] The utility model aims to provide a triangular valve with higher rotation accuracy and longer service life.

[0007] The purpose of the utility model is achieved in this way:

[0008] A triangular valve comprises a valve body, a valve core and a hand wheel, wherein a valve cavity is arranged in the valve body, a connecting hole communicating with the valve cavity is arranged on the front end surface of the valve body, the valve core is arranged in the valve cavity, the front end of the valve core is connected with a valve stem, the valve stem passes through the connecting hole and is fixedly connected with the hand wheel, and is characterized in that: an accommodating cavity with a rear end opening is arranged on the hand wheel, a connecting column protruding backwards is formed on the front side wall of the accommodating cavity, and a mounting hole for plugging and matching with the valve stem is arranged on the rear end surface of the connecting column,

[0009] A stop block is provided on the front end surface of the valve body, and a positioning block or a positioning groove is provided on the rear end surface of the connecting column. The stop block cooperates with the positioning block or the positioning groove so that the hand wheel can only rotate 90 degrees relative to the valve body.

[0010] The triangular valve is provided with a connecting column in the handwheel, and then a stop block and a positioning block for limiting the rotation angle of the handwheel are respectively provided on the front end surface of the valve body and the rear end surface of the connecting column, so that the inner wall of the accommodating cavity in the handwheel can be made into a circular and relatively smooth shape, so that the rear end of the handwheel can be more closely fitted to the front part of the valve body, reducing the gap between the handwheel and the valve body, thereby preventing foreign matter or water in the kitchen or bathroom from flowing into the handwheel through the gap; further, since the positioning block and the stop block are located close to the middle part of the handwheel, even if a small amount of foreign matter or water enters the handwheel, it will slide to the lower end of the accommodating cavity in the handwheel under the action of gravity, and will not affect the positioning block and the stop block. Therefore, foreign matter or water cannot fall onto the positioning block and the stop block through the gap between the handwheel and the valve body, and will not affect the normal limiting of the positioning block and the stop block. Therefore, the triangular valve has better precision and longer service life.

[0011] In the above-mentioned triangular valve, there are two stop blocks, which are symmetrically arranged about the central axis of the connecting hole, and there are two positioning blocks or positioning grooves, which are symmetrically arranged about the central axis of the connecting column.

[0012] The design of the two stops and the positioning block can increase the service life of the triangular valve. After the hand wheel is rotated into place, the total contact area between the positioning block and the stop block is doubled, thereby halving the pressure on the stop block and the positioning block at the moment of contact, avoiding deformation or breakage of the stop block and the positioning block due to collision, which is beneficial to improving the control accuracy of the triangular valve after a long time. At the same time, even if one stop block or the positioning block is broken due to collision, the other stop block and the positioning block can be used normally, further increasing the service life of the triangular valve.

[0013] In the above-mentioned triangular valve, the valve body includes a main body, a step portion and a connecting portion whose diameters decrease successively from back to front, the valve cavity is arranged in the main body, the step portion is cylindrical, the step portion and the connecting portion can both extend into the accommodating cavity of the handwheel, and the stop block is formed on the front side surface of the connecting portion.

[0014] The design of the above-mentioned step portion can play a buffering role. Even if some foreign matter or water enters the handwheel through the gap between the valve body and the handwheel, it will first fall onto the step portion and slide downward along the outer circumference of the step portion and fall to the lower end of the accommodating cavity. It will not affect the stop block and the positioning block, thereby further improving the stability of the triangular valve during operation and ensuring that the triangular valve has higher precision and longer service life.

[0015] In the above-mentioned triangular valve, a retaining ring protruding outward is formed at the front end of the step portion.

[0016] The design of the retaining ring can block foreign matter and sewage that fall onto the step portion, further reducing the possibility of foreign matter and sewage falling onto the stop block and the positioning block, and further improving the accuracy and service life of the triangular valve.

[0017] In the above-mentioned triangular valve, the main body is a rectangular parallelepiped or a cube, the rear end of the handwheel is close to the front side of the main body, and the inner diameter of the accommodating cavity in the handwheel is smaller than the diagonal length of the front side of the main body; as another scheme, the main body is spherical or cylindrical, the rear end of the handwheel is close to the front side of the main body, and the inner diameter of the accommodating cavity in the handwheel is smaller than or equal to the diameter of the front side of the main body.

[0018] The design of the handwheel being close to the main body and the size of the handwheel can reduce the gap between the handwheel and the main body, prevent foreign matter and sewage from entering the inside of the handwheel, thereby preventing foreign matter and sewage from affecting the normal operation of the stop block and the positioning block, and improving the accuracy and service life of the triangular valve; the design of the diagonal or diameter of the front side of the main body being larger than the inner diameter of the accommodating cavity in the handwheel can further reduce the chance of foreign matter and sewage entering the gap between the handwheel and the main body.

[0019] In the above-mentioned triangular valve, a threaded hole is provided at the front end of the valve stem, a mounting groove is provided on the front end surface of the handwheel, a through hole is provided between the mounting groove and the mounting hole to connect the two, and the handwheel and the valve stem are fixedly connected by a fastener threadedly connected to the threaded hole.

[0020] In the triangular valve, the valve stem and the handwheel are fixed by fasteners, so that the connection between the valve stem and the handwheel is more secure, and the handwheel is prevented from moving outward after long-term use, resulting in an increase in the gap between the handwheel and the valve body, which helps to improve the accuracy and service life of the triangular valve.

[0021] In the above-mentioned triangular valve, the valve stem and the valve core are formed into an integral structure.

[0022] In the above-mentioned triangular valve, a clamping groove is provided at the front end of the valve core, and the rear end of the valve stem is inserted into the clamping groove, and the valve core and the valve stem are circumferentially fixed by the clamping groove.

[0023] In the above-mentioned triangular valve, the rear end of the valve body is provided with a water inlet pipe connected to the valve cavity, the lower end or upper end of the valve body is provided with a water outlet pipe connected to the valve cavity, the rear end of the valve core is provided with a water inlet hole connected to the water inlet pipe, the upper part or / and lower part of the valve core is provided with a water outlet hole that can be connected to the water outlet pipe, and the water outlet hole is connected to the water inlet hole.

[0024] The working principle of the triangular valve is as follows: when the triangular valve is closed, the water inlet hole of the valve core is connected to the water inlet pipe of the valve body, and the water outlet hole of the valve core is perpendicular to the water outlet pipe of the valve body. At this time, one side of the positioning block abuts against the stop block; when the triangular valve needs to be opened, the hand wheel is turned until the other side of the positioning block abuts against the stop block. At this time, the hand wheel has just rotated 90 degrees, and the valve core also rotates 90 degrees synchronously driven by the valve stem and the hand wheel. The water outlet hole of the valve core is connected to the water outlet pipe of the valve body, and the triangular valve is opened.

[0025] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0026] 1. The utility model sets a connecting column in the handwheel, and then sets a stop block and a positioning block for limiting the rotation angle of the handwheel on the front end surface of the valve body and the rear end surface of the connecting column respectively, so that the inner wall of the accommodating cavity in the handwheel can be made into a circle and relatively smooth, so that the rear end of the handwheel can fit the front part of the valve body more closely, and the gap between the handwheel and the valve body is reduced, thereby preventing foreign matter or water in the kitchen or bathroom from flowing into the handwheel through the gap.

[0027] 2. The positioning block and the stop block of the utility model are located close to the middle of the handwheel. Even if a small amount of foreign matter or water enters the handwheel, it will slide to the lower end of the accommodating cavity in the handwheel under the action of gravity, and will not affect the positioning block and the stop block. Therefore, foreign matter or water cannot fall onto the positioning block and the stop block through the gap between the handwheel and the valve body, and will not affect the normal limit of the positioning block and the stop block. Therefore, the triangular valve has better precision and longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0029] Figure 2 The utility model is a cross-sectional view Figure 1 .

[0030] Figure 3 The utility model is a cross-sectional view Figure 2 .

[0031] Figure 4 It is a structural schematic diagram of the valve body of the utility model.

[0032] Figure 5 It is a structural schematic diagram of a hand wheel of the utility model.

[0033] Figure 6 It is a schematic diagram of the connection structure of the valve core and the valve stem of the utility model.

[0034] Figure 7 It is a structural schematic diagram of the cylindrical main body in the utility model.

[0035] In the figure, 1. valve body; 11. main body; 111. valve cavity; 12. step portion; 121. retaining ring; 13. connecting portion; 131. stop block; 14. connecting hole; 15. water inlet pipe; 16. water outlet pipe; 2. hand wheel; 21. accommodating cavity; 22. connecting column; 221. mounting hole; 222. positioning block; 23. mounting groove; 24. through hole; 3. valve core; 31. water inlet hole; 32. water outlet hole; 33. slot; 4. valve stem; 41. threaded hole. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings. Figure 1 —6:

[0037] The triangular valve comprises a valve body 1, a valve core 3 and a handwheel 2. A valve cavity 111 is provided in the valve body 1. A connecting hole 14 communicating with the valve cavity 111 is provided on the front end surface of the valve body 1. The valve core 3 is arranged in the valve cavity 111. The front end of the valve core 3 is connected to the valve stem 4. The valve stem 4 passes through the connecting hole 14 and is fixedly connected to the handwheel 2. A receiving cavity 21 with a rear end opening is provided on the handwheel 2. A connecting column 22 protruding backward is formed on the front side wall of the receiving cavity 21. A mounting hole 221 for plugging and matching with the valve stem 4 is provided on the rear end surface of the connecting column 22. A stop block 131 is provided on the front end surface of the valve body 1. A positioning block 222 or a positioning groove is provided on the rear end surface of the connecting column 22. The stop block 131 cooperates with the positioning block 222 or the positioning groove so that the handwheel 2 can only rotate 90 degrees relative to the valve body 1. The triangular valve is provided with a connecting column 22 in the hand wheel 2, and then a stop block 131 and a positioning block 222 for limiting the rotation angle of the hand wheel 2 are respectively provided on the front end surface of the valve body 1 and the rear end surface of the connecting column 22, so that the inner wall of the accommodating cavity 21 in the hand wheel 2 can be made into a round shape and relatively smooth, so that the rear end of the hand wheel 2 can be more closely fitted to the front part of the valve body 1, and the gap between the hand wheel 2 and the valve body 1 is reduced, thereby preventing foreign matter or water in the kitchen or bathroom from flowing into the hand wheel 2 through the gap; further, due to the positioning The positions of block 222 and stop block 131 are close to the middle of the handwheel 2. Even if a small amount of foreign matter or water enters the handwheel 2, it will slide to the lower end of the accommodating cavity 21 in the handwheel 2 under the action of gravity, and will not affect the positioning block 222 and the stop block 131. Therefore, foreign matter or water cannot fall onto the positioning block 222 and the stop block 131 through the gap between the handwheel 2 and the valve body 1, and will not affect the normal limit of the positioning block 222 and the stop block 131. Therefore, the triangular valve has better precision and longer service life.

[0038] Furthermore, there are two stop blocks 131, which are symmetrically arranged about the central axis of the connecting hole 14, and there are two positioning blocks 222 or positioning grooves, which are symmetrically arranged about the central axis of the connecting column 22. The design of the two stop blocks 131 and the positioning block 222 can increase the service life of the triangular valve, so that the total contact area between the positioning block 222 and the stop block 131 is doubled after the hand wheel 2 is rotated into place, so that the pressure on the stop block 131 and the positioning block 222 at the moment of contact is reduced by half, and the stop block 131 and the positioning block 222 are prevented from being deformed or broken due to collision, which is conducive to improving the control accuracy of the triangular valve after a long time. At the same time, even if one stop block 131 or the positioning block 222 is broken due to collision, the other stop block 131 and the positioning block 222 can be used normally, which further increases the service life of the triangular valve.

[0039] like Figure 2-4 As shown, the valve body 1 includes a main body 11, a step portion 12 and a connecting portion 13, the diameters of which decrease successively from the back to the front, a valve cavity 111 is arranged in the main body 11, the step portion 12 is cylindrical, the step portion 12 and the connecting portion 13 can both extend into the accommodating cavity 21 of the hand wheel 2, and a stop block 131 is formed on the front side surface of the connecting portion 13; a retaining ring 121 protruding outward is formed at the front end of the step portion 12. The design of the above-mentioned step portion 12 can play a buffering role. Even if some foreign matter or water enters the handwheel 2 through the gap between the main body 11 of the valve body 1 and the handwheel 2, it will first fall onto the step portion 12 and slide downward along the outer circumference of the step portion 12 to fall to the lower end of the accommodating chamber 21. It will not affect the stop block 131 and the positioning block 222, thereby further improving the stability of the triangular valve during operation and ensuring that the triangular valve has higher precision and longer service life; the design of the above-mentioned retaining ring 121 can block foreign matter and sewage that fall onto the step portion 12, further reducing the possibility of foreign matter and sewage falling onto the stop block 131 and the positioning block 222, and further improving the precision and service life of the triangular valve.

[0040] like Figure 2 , Figure 3 and Figure 7 As shown, the main body 11 is a rectangular parallelepiped or a cube, the rear end of the handwheel 2 is close to the front side of the main body, and the inner diameter of the accommodating cavity 21 in the handwheel 2 is smaller than the diagonal length of the front side of the main body 11; as another scheme, the main body 11 is spherical or cylindrical, the rear end of the handwheel 2 is close to the front side of the main body 11, and the inner diameter of the accommodating cavity 21 in the handwheel 2 is smaller than or equal to the diameter of the front side of the main body 11.

[0041] The design of the handwheel 2 being close to the main body 11 and the size of the handwheel 2 can reduce the gap between the handwheel 2 and the main body 11, and prevent foreign matter and sewage from entering the inside of the handwheel 2, thereby preventing foreign matter and sewage from affecting the normal operation of the stop block 131 and the positioning block 222, and improving the accuracy and service life of the triangular valve; the design that the diagonal or diameter of the front side of the main body 11 is larger than the inner diameter of the accommodating cavity 21 in the handwheel 2 can further reduce the chance of foreign matter and sewage entering the gap between the handwheel 2 and the main body 11.

[0042] Furthermore, a threaded hole 41 is provided at the front end of the valve stem 4, a mounting groove 23 is provided on the front end surface of the hand wheel 2, a through hole 24 is provided between the mounting groove 23 and the mounting hole 221 to connect the two, and the hand wheel 2 and the valve stem 4 are fixedly connected by a fastener threadedly connected to the threaded hole 41. In the present triangular valve, the valve stem 4 and the hand wheel 2 are fixed by fasteners, so that the connection between the valve stem 4 and the hand wheel 2 is more secure, and the hand wheel 2 is prevented from moving outward after long-term use, resulting in an increase in the gap between the hand wheel 2 and the valve body 1, which helps to improve the accuracy and service life of the present triangular valve.

[0043] The valve stem 4 and the valve core 3 are formed into an integral structure. As another solution, a slot 33 is provided at the front end of the valve core 3, and the rear end of the valve stem 4 is inserted into the slot 33, and the valve core 3 and the valve stem 4 are circumferentially fixed by the slot 33.

[0044] In this triangular valve, the rear end of the valve body 1 is provided with a water inlet pipe 15 connected to the valve cavity 111, the lower end or upper end of the valve body 1 is provided with a water outlet pipe 16 connected to the valve cavity 111, the rear end of the valve core 3 is provided with a water inlet hole 31 connected to the water inlet pipe 15, the upper part or / and lower part of the valve core 3 is provided with a water outlet hole 32 that can be connected to the water outlet pipe 16, and the water outlet hole 32 is connected to the water inlet hole 31.

[0045] When the triangular valve is closed, the water inlet hole 31 of the valve core 3 is connected to the water inlet pipe 15 of the valve body 1, and the water outlet hole 32 of the valve core 3 is perpendicular to the water outlet pipe 16 of the valve body 1. At this time, one side of the positioning block 222 abuts against the stop block 131; when the triangular valve needs to be opened, the hand wheel 2 is rotated until the other side of the positioning block 222 abuts against the stop block 131. At this time, the hand wheel 2 has just rotated 90 degrees, and the valve core 3 also rotates 90 degrees synchronously driven by the valve stem 4 and the hand wheel 2. The water outlet hole 32 of the valve core 3 is connected to the water outlet pipe 16 of the valve body 1, and the triangular valve is opened.

[0046] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A triangular valve, comprising a valve body (1), a valve core (3) and a hand wheel (2), wherein a valve cavity (111) is provided in the valve body (1), a connecting hole (14) communicating with the valve cavity (111) is provided on the front end surface of the valve body (1), the valve core (3) is arranged in the valve cavity (111), the front end of the valve core (3) is connected to a valve stem (4), the valve stem (4) passes through the connecting hole (14) and is fixedly connected to the hand wheel (2), characterized in that: The hand wheel (2) is provided with a receiving cavity (21) with a rear end opening, a connecting column (22) protruding backward is formed on the front side wall of the receiving cavity (21), a mounting hole (221) for plugging and cooperating with the valve stem (4) is provided on the rear end surface of the connecting column (22), a stop block (131) is provided on the front end surface of the valve body (1), and a positioning block (222) or a positioning groove is provided on the rear end surface of the connecting column (22), and the stop block (131) cooperates with the positioning block (222) or the positioning groove so that the hand wheel (2) can only rotate 90 degrees relative to the valve body (1).

2. A triangular valve according to claim 1, characterized in that: There are two stop blocks (131), which are symmetrically arranged about the central axis of the connecting hole (14); there are two positioning blocks (222) or positioning grooves, which are symmetrically arranged about the central axis of the connecting column (22).

3. A triangular valve according to claim 1, characterized in that: The valve body (1) comprises a main body (11), a step portion (12) and a connecting portion (13) whose diameters decrease successively from the back to the front; the valve cavity (111) is arranged in the main body (11); the step portion (12) is cylindrical; both the step portion (12) and the connecting portion (13) can extend into the accommodating cavity (21) of the hand wheel (2); and the stop block (131) is formed on the front side of the connecting portion (13).

4. A triangular valve according to claim 3, characterized in that: A retaining ring (121) protruding outwards is formed at the front end of the step portion (12).

5. A triangular valve according to claim 3, characterized in that: The main body (11) is a rectangular parallelepiped or a cube, the rear end of the hand wheel (2) is close to the front side of the main body (11), and the inner diameter of the accommodating cavity (21) in the hand wheel (2) is smaller than the diagonal length of the front side of the main body (11).

6. A triangular valve according to claim 3, characterized in that: The main body (11) is spherical or cylindrical, the rear end of the hand wheel (2) is close to the front side of the main body (11), and the inner diameter of the accommodating cavity (21) in the hand wheel (2) is less than or equal to the diameter of the front side of the main body (11).

7. A triangular valve according to any one of claims 1 to 6, characterized in that: A threaded hole (41) is provided at the front end of the valve stem (4), a mounting groove (23) is provided on the front end surface of the hand wheel (2), a through hole (24) is provided between the mounting groove (23) and the mounting hole (221) to connect the two, and the hand wheel (2) and the valve stem (4) are fixedly connected by a fastener threadedly connected to the threaded hole (41).

8. A triangular valve according to any one of claims 1 to 6, characterized in that: The valve stem (4) and the valve core (3) are formed into an integrated structure.

9. A triangular valve according to any one of claims 1 to 6, characterized in that: The front end of the valve core (3) is provided with a clamping groove (33), the rear end of the valve stem (4) is inserted into the clamping groove (33), and the valve core (3) and the valve stem (4) are circumferentially fixed via the clamping groove (33).

10. A triangular valve according to any one of claims 1 to 6, characterized in that: The rear end of the valve body (1) is provided with a water inlet pipe (15) connected to the valve cavity (111); the lower end or upper end of the valve body (1) is provided with a water outlet pipe (16) connected to the valve cavity (111); the rear end of the valve core (3) is provided with a water inlet hole (31) connected to the water inlet pipe (15); the upper part or / and lower part of the valve core (3) is provided with a water outlet hole (32) capable of connecting to the water outlet pipe (16); the water outlet hole (32) is connected to the water inlet hole (31).

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