TWM532534U - Water stop valve - Google Patents

Description

Water stop valve

This creation is about a technical field related to faucet switches and valves, especially for water stop valves such as sinks and kitchens.

The faucet and the valve of the water stop valve are installed in the kitchen sink and the sink to control the water and the amount of water. Due to the current cost reduction and improved processing performance, some heavy metals such as lead are added to the manufacturing materials. Since the body temperature of the water stop valve is generally more than one thousand degrees, the melting point of lead is about 327 degrees. When the body is cast, lead is segregated on the inner and outer surfaces of the body, but the water flowing in the faucet will destroy the surface of the lead-washing, forming corrosion, and the internal lead ions are exposed to increase the lead content of the precipitate, causing heavy metal lead to contaminate the water. The problem has an impact on human health, especially children's resistance is poor, and the absorption rate of lead is high, so that high blood lead will cause harm to children's IQ and resistance. Therefore, the current water stop valve design is the area that faces the water flow. To minimize the chance of water contact with metals to reduce the problem of heavy metal contaminated water.

For example, US7,036793b2 US Patent Case <hereinafter referred to as Reference Case 1> installs a valve sleeve in the body of the water stop valve, and a water hole is arranged on the circumferential side of the valve sleeve, and the upper end of the valve sleeve is forced to be multi-stepped. a ring seat and a water stop ring, the valve sleeve is connected to a pole seat, The rod seat is fixed with the switching handle, so the switching handle can rotate the valve sleeve, and when the valve sleeve is rotated, the water hole can be sent out according to the inlet and outlet holes of the body, and if the valve sleeve is rotated, the valve sleeve is rotated. The water hole is staggered from the inlet and outlet holes of the body, which is the state of closing the water stop, and the aforementioned valve sleeve is made of a plastic material. However, referring to the valve sleeve, ring body and other components of the previous case, the shape is complicated and the cost is high. It is worth noting that the valve sleeve is connected to the switching handle, and the switching handle is switched to rotate, which will drive the valve sleeve to rotate, so the valve sleeve rotates frequently. It will cause the outer side of the valve sleeve and the inner side wall of the body to wear frequently. The valve sleeve is made of plastic material, and the wear resistance is not as good as that of metal. Therefore, the valve sleeve made of plastic is more likely to cause excessive wear in a short time and cause plastic aging problems. Reduce the service life.

For example, refer to the new patent application of the second version of the certificate No. M520103 "water dragon type water separator", which includes a body, an upper connecting seat, a ball valve, a switching handle and a lower connecting seat, the body including a body a base, an inner valve slot and a water outlet joint, the body base and the water outlet joint are made of solid metal, the inner valve slot is made of plastic, and the upper connecting seat is threadedly coupled to the body base and has a solid state a metal joint portion and a plastic tube disposed in the joint portion and communicating with the inner valve groove, the ball valve being made of plastic and disposed in the inner valve groove, the switch handle being rotatably disposed on the body The base is mounted on the ball valve, and the lower connecting seat is disposed on the body and includes a plug of a solid metal and a rectifying member made of plastic and disposed in the plug, the plug is screwed to The body base, the body, the upper connecting seat, the spherical valve and the lower connecting seat form an outer metal inner plastic structure, so that the faucet type water separator has the effects of reducing cost and avoiding heavy metal pollution.

The structure of the previous case 2 is also the knot of the strength of the outer metal. Structure to avoid the effect of heavy metal pollution of water quality, however, referring to the "structure of plastic in outer metal" of the previous case 2, the internal plastic components are scattered and lack of integration, and the assembly is centered on the body. The upper and lower axial directions are worn on the body, so the metal component and the plastic component are assembled to the body one by one according to the axial sequence, and the assembly takes time. Furthermore, the component shape is complicated, for example, the joint portion of the upper connector is metal. However, the central passage is plastic. The single component contains both metal and plastic. The manufacturing cost is high and the structure is complicated. As a result, the cost of the faucet is high, which makes it easy for the general public to regress and not universally adopt.

In view of the above problems, the creator further studies and develops. Therefore, the main purpose of the present invention is to provide a water stop valve whose structure allows the plastic components in the valve body to be combined into an internal valve unit, which is integrated and can be independently After the combination is completed, the whole inner valve unit is mounted on the metal body, and the plastic component can be prevented from being excessively worn to reduce the service life, and a water stop valve which is quick and easy to assemble and has an increased service life and is resistant to heavy metal pollution can be provided.

The present invention provides a water stop valve comprising: an inner valve unit comprising at least one ball valve group, a valve seat for plastic material and for the ball valve group, the ball valve group comprising a ball valve and two pedestals The ball valve is disposed transversely to the first-class hole, and a valve stem is connected to one end. The pedestal is provided with a through hole for the two pedestals to be clamped on the outer side of the two symmetrical portions of the ball valve. The valve seat comprises a cylindrical shape. a body, a water hole extending transversely through the body, and a connecting hole disposed at the closed end of the body, the body is provided with an inner hole, and the water hole is correspondingly connected The through hole of the pedestal, wherein the ball valve is placed in the inner hole, the ball valve is steered to align the flow hole with the water hole and the through hole, and the valve stem is different from the other end of the ball valve The receiving hole extends outside the valve seat; a body for accommodating the inner valve unit, the outer body forming a chamber to accommodate the inner valve unit, wherein the valve seat is fixed in the chamber The outer body includes a water inlet end and a water outlet end, the water outlet end is corresponding to the water hole of the valve seat, the through hole of the pedestal, and the outer body top end is connected with the chamber to provide a set of ports The set of ports is provided for the valve stem of the ball valve group to be extended, and a switch handle is mounted on the top surface of the set of ports, and the valve stem is fixedly coupled, thereby rotating the switch handle to drive the ball valve to turn, to switch The state of water and water.

Therefore, this creation can provide the following effects:

1. The creation system is composed of a ball valve group and a valve seat to form an inner valve unit. The inner valve unit surrounds the ball valve of the ball valve group with a valve seat of a plastic material. The pedestal supported by the two ends of the ball valve is also a plastic material, so the water is inserted. The flowing water entering the water outlet end is in contact with the water hole of the valve seat of the plastic material, the ball valve, and the through hole of the pedestal, thereby greatly reducing the concern that the water contacts the metal to be contaminated.

2. The inner valve unit of the creation can be assembled first when the outer body is manufactured, and then the entire inner valve unit is installed in the chamber of the outer body, and then the switch handle is connected to the valve stem, without the components of the inner valve unit and The related components of the outer body are dispersed and assembled one by one. This creation enables the inner valve unit of the plastic component to be assembled first and has integration, avoiding the individual assembly of the components dispersedly, accelerating the assembly work, and assembling quickly and simply.

3. The body outside the creation is made of metal material, and the inner valve unit is a ball valve and a plastic material. The two are manufactured and assembled separately, and are more recognizable and manageable in component storage management.

4. In the inner valve unit of the present invention, the rotatable ball valve is supported by two pedestals, and the valve seat sleeve is placed outside the ball valve, so that the outer side wall of the valve seat abuts against the outer body cavity, the aforementioned valve The seat does not rotate in a fixed shape, so that the valve seat will not wear relative to the inner side of the outer body, so the creation can effectively increase the service life of the water stop valve.

10, 101‧‧‧ internal valve unit

11‧‧‧Base

111‧‧‧ bottom edge

12‧‧‧through holes

20‧‧‧Ball valve group

21‧‧‧Ball valve

211‧‧‧ orifice

212‧‧‧ card slot

22, 220‧‧‧ valve stem

221‧‧‧Stop ring

222‧‧‧ lock slot

223‧‧‧ tongue

23‧‧‧ pedestal

231‧‧‧ curved surface

232‧‧‧through hole

30, 301‧‧‧ valve seat

31‧‧‧ Body

311‧‧‧ water hole

32‧‧‧Contact hole

33‧‧‧ 托部

331‧‧‧ outer water ring

332‧‧‧Expanding

34‧‧‧ inside hole

40, 401‧‧‧ external body

41‧‧‧ chamber

411‧‧‧pressure groove

42, 45‧‧‧ water inlet

43‧‧‧ water outlet

431‧‧‧Water connection

44, 441‧‧‧ group

442‧‧‧ external thread

46‧‧‧shims

47‧‧‧ Cap

471‧‧‧Medium hole

50, 501‧‧‧ switch handle

51‧‧‧Perforation

511‧‧‧ bolt

The first figure is a perspective view of a preferred embodiment of the present invention.

The second drawing is an exploded perspective view of a preferred embodiment of the present invention.

The third figure is an exploded perspective view of the inner valve unit of a preferred embodiment of the present invention.

The fourth drawing is a cross-sectional exploded view of the inner valve unit and the outer body prior to assembly of a preferred embodiment of the present invention.

The fifth drawing is a top plan view of the water stop state of a preferred embodiment of the present invention.

The sixth drawing is a cross-sectional view taken along line 6-6 of a preferred embodiment of the present invention to show the water stop state.

Figure 7 is a top plan view of the effluent state of a preferred embodiment of the present invention.

The eighth drawing is an axial cross-sectional view showing a water state in the section 8-8 of a preferred embodiment of the present invention.

The ninth drawing is an exploded perspective view of another preferred embodiment of the present invention.

The tenth drawing is an axial sectional view showing a water stop state of another preferred embodiment of the present invention.

The eleventh drawing is a perspective view of still another preferred embodiment of the present creation.

Figure 12 is a perspective exploded view of still another preferred embodiment of the present invention.

Figure 13 is an exploded perspective view of the inner valve unit of still another preferred embodiment of the present invention.

Fig. 14 is a top cross-sectional view showing the water stop state of still another preferred embodiment of the present invention.

The fifteenth embodiment is an axial sectional view showing a water stop state in still another preferred embodiment of the present invention.

Fig. 16 is an axial sectional view showing a water discharge state in still another preferred embodiment of the present invention.

The present invention is a water stop valve, please refer to the first and second figures, which includes an inner valve unit 10, an outer body 40, and a switch handle 50, wherein: the inner valve unit 10 is as shown in the second and third figures. The utility model comprises a base 11 of a plastic material, a ball valve group 20 and a valve seat 30. The base 11 is a hollow circular seat body, and one end radially protrudes from a bottom edge 111 of the torus, and the hollow portion is an axial joint. The ball valve block 20 includes a plastic or metal ball valve 21 and two pedestals 23. The rotatable ball valve 21 is transversely disposed with a flow hole 211, and a valve stem 22 is protruded from the upper end, and the valve stem 22 is circumferentially The valve sleeve 22 is recessed from the top end surface with a locking groove 222. The pedestal 23 is concavely provided with a curved surface 231 corresponding to the spherical surface of the ball valve 21, and a through hole 232 is provided through the pedestal for the two pedestals. The arc surface 231 of the 23 is clamped to the outer side of the symmetrical position of the ball valve 21 to support the ball valve 21 to rotate smoothly at a fixed point, and the bottom side of the two pedestals 23 reliably abuts against the base 11 to form the top edge of the through hole 12; The valve seat 30 is in the shape of a seat for being placed on the outer side of the ball valve group 20 and the base 11, as shown in the second, third, and fourth figures. A Department of the cylindrical body portion 31 at one end of the axial penetration A through hole 32 is disposed through the ground, and the other end has a ring portion 31 extending radially. The body portion 31 extends transversely through a water hole 311, and the outer portion of the body portion 31 is embedded with an outer water stop ring 331. A slot 332 is defined in the bottom surface of the bracket portion 33. The slot 332 has a depth and a range for filling the bottom edge 111 of the base 11. The inner portion 34 defines an inner hole 34 communicating with the through hole 32. The inner hole 34 is formed. The inner diameter is significantly larger than the diameter of the through hole 32 and smaller than the inner diameter of the expansion groove 332; the inner diameter and the axial height of the inner hole 34 are allowed to be placed outside the ball valve group 20 and the base 11, and the aperture of the hole 32 is just for the ball valve 21. The valve stem 22 is extended outwardly to form a body portion 31 on the outer side of the ball valve 21, and when the ball valve 21 is rotatable, the flow hole 211 thereof can be positively aligned with the water hole 311, thereby completing the assembly of the inner valve unit 10; The water valve of the outer body 40 is externally shell-shaped and cast by metal material, and is sleeved and assembled on the outer peripheral side of the inner valve unit 10. As shown in the second, fourth and fifth figures, a cavity is formed inside the outer body 40. The space of the chamber 41 accommodates the inner valve unit 10, and the valve seat 30 is fixed in the chamber 41, and the outer body 40 is designed as a water inlet end. The water outlet end is arranged at a distance of 90 degrees, and the bottom end of the axial direction may be set as the water inlet end 42 , and the outer side and the water inlet end 42 may be set at a 90 degree angle to be a water outlet end 43 and the water inlet end 42 . It can be set as a nut to engage the water pipe, and the water outlet end 43 is screwed to a water outlet joint 431. The top end of the outer body 40 is connected with the chamber 41 to provide a set of ports 44. The diameter of the group port 44 is used for the valve of the ball valve group 20. The rod 22 is mounted, and a pressure groove 411 is disposed at the boundary between the chamber 41 and the water inlet end 42. The position of the pressure groove 411 can be forced against the water stop ring 331 outside the inner valve unit 10, and the outer body 40 is disposed on the outer body 40. Connecting the switch handle 50 of the ball valve 21, the switch handle 50 is provided with a through hole 41 for a bolt 511 to be worn; the outer body 40 is assembled for the inner valve unit 10, and the inner valve unit 10 is The water inlet end 42 of the outer body 40 enters the chamber 41, and the valve stem 22 of the ball valve group 20 is located within the range of the group port 44. The inner side of the group port 44 is pressed against the outer side of the vent ring 221 to enhance water leakage prevention. The chamber 41 is provided. The pressure groove 411 at the junction with the water inlet end 42 is urged from the top to the bottom on the outer water stop ring 331 of the inner valve unit 10 to ensure that the assembly of the outer body 40 and the inner valve unit 10 does not allow water leakage, and secondly, The switch handle 50 is pressed against the end surface of the group port 44, and the bolt 511 is threaded from the through hole 51 to be screwed into the lock groove 222 of the valve stem 22. The switch handle 50 is used to drive the ball valve 21 to generate a joint action, and the switch water stop valve is discharged. Or stop the water on and off.

Therefore, as shown in the fifth and sixth figures, when the water stop valve is to be switched to the closed state of the water, the switch handle 50 is rotated by 90 degrees, so that the valve stem 22 and the ball valve 21 are driven to support the ball valve 21 on the two pedestals 23. Under the stable rotation, the flow hole 211 forming the ball valve 21 is separated from the through hole 232, the water hole 311 and the water outlet end 43 so that the closed surface of the ball valve 21 faces the through hole 232 and the water outlet end 43, and the water at the water inlet end 42 cannot pass through the ball valve 21 The water outlet end 43 and the water outlet joint 431 are discharged.

On the other hand, as shown in the seventh and eighth diagrams, when the water stop valve is to be switched to the open state of the water outlet, the switch handle 50 is rotated by 90 degrees, so that the valve stem 22 and the ball valve 21 are driven to make the ball valve 21 on the two pedestals 23 With the support of stable rotation, the flow hole 211 forming the ball valve 21 is forwardly aligned with the through hole 232 and the water outlet end 43, and the water of the water inlet end 42 is sent out to the water outlet end via the base 11, the ball valve 21, and the water hole 311 of the inner valve unit 10. 43 and the water outlet joint 431, the user can use water.

The water stop valve structure of the present invention makes the water contact with the through hole 12 of the base 11 of the inner valve unit 10, the ball valve 21, and the pedestal 23 of the plastic material in the process of the water from the water inlet end 42 to the water outlet end 43. Through hole 232, water hole 311 of valve seat 30 of plastic material, The water outlet end 43 is sent out again, so that the water passage through the water channel can reduce the possibility that the water contacts the metal and greatly reduces the metal pollution. Moreover, the valve unit 10 of the present invention is clamped with the base 11 of the plastic material and the valve seat 30. Therefore, the assembly of the inner valve unit 10 is integrated, and the assembly is simple and quick.

The embodiment of the ninth and tenth embodiments illustrates that the ball valve 21 and the valve stem 22 of the inner valve unit 10 can also be decomposed into two different individual components, wherein the ball valve 21 is recessed with a card slot 212 on the top side, and the valve stem 22 is A tongue piece 223 is protruded from the bottom end; the inner valve unit 10 first enters from the water inlet end 42 of the outer body 40 and is installed in the chamber 41, and the valve stem 22 enters from the group port 44, so that the tongue piece 223 is concave and convex. The card slot 212 of the ball valve 21 is engaged, and the switch handle 50 is screwed and engaged to the valve stem 22 to be assembled.

Please refer to the eleventh, twelfth and thirteenth drawings. Another embodiment of the present invention is to show that the outer body 401 can also be set to the same horizontal line of the inlet and outlet ends 45, 43 and the additional valve unit 101. Example. The internal valve unit 101 can include a ball valve assembly 201 and a more compact combination of a valve seat 301. The ball valve assembly 201 includes a valve stem 220, as shown in the twelfth, thirteenth, and sixteenth. A ball valve 21, wherein the ball valve 21 is still supported by the pedestal 23, a card slot 212 is disposed on the top side of the ball valve 21, and a tongue 223 is protruded from one end of the valve rod 220 to emboss the card slot 212 of the ball valve 21, the valve seat The 301 series includes a tubular body 31. The body portion 31 further has a water hole 311 extending laterally on both sides, and a receiving hole 32 is formed in the top portion, and an inner hole 34 communicating with the connecting hole 32 is disposed therein, thereby the ball valve. The group 201 is mounted on the inner hole 34 of the valve seat 301 from the water hole 31 by using the pedestal 23 and the ball valve 21. The through hole 232 of the pedestal 23 is still aligned with the water hole 311, and the valve stem 220 enters the inner hole 34 from the receiving hole 32. , the diameter bump is stuck in the card slot of the ball valve 21 212, that is, the inner valve unit 101 constituting another compact state; and the water inlet end 45 and the water outlet end 43 of the outer body 401 are disposed on the same horizontal axis, which is different from the first figure in a configuration of ninety degrees, the outer body 401 is to further strengthen the combination stability with the inner valve unit 101. Therefore, the external thread 442 is disposed on the outer side of the group port 441, and a correspondingly engaged cap 47 is provided. The cap 47 is a cap body in the form of a nut, and the cap 47 is centrally disposed. The valve stem 220 can be extended out of the middle hole 471; by which more than one spacer 46 is stacked on the end surface of the group port 441, and when the cap 47 is threadedly engaged with the external thread 442, the inner end surface of the cap 47 is also pressed against each pad. 46, the cap 47 is positively pressed against the valve seat 301 by the axial thrust of the lock assembly port 441, and is positioned in the chamber 41 of the outer body 401 to ensure the pedestal 23, the through hole 232, and the water hole of the inner valve unit 101. 311 and the water outlet 43 are aligned in a straight line without being biased; secondly, the switch handle 501 is sleeved on the outer side of the cap 47, so that the through hole 51 is aligned with the valve stem 220 of the inner valve unit 101, and the bolt 511 is screwed into the set. The switch handle 501 is coupled to the valve stem 220, and the valve stem 220 and the ball valve 21 are operable The switching inlet and outlet positions.

As shown in the fourteenth and fifteenth figures, when the switch handle 501 is in the water stop state, the position of the valve stem 220 and the ball valve 21, the flow hole 211 of the ball valve 21 is separated from the through hole 232 and the water outlet end 43, the water outlet joint 431, When the closed surface of the ball valve 21 faces the through hole 232 and the water outlet end 43, the water at the water inlet end 45 cannot flow out of the water outlet end 43 and the water outlet joint 431 via the ball valve 21; otherwise, as shown in Fig. 16, the water stop valve When switching to the water discharge state, the switch handle 501 is rotated ninety degrees to drive the valve stem 220 and the ball valve 21 to rotate the ball valve 21, The flow hole 211 forming the ball valve 21 is forwardly aligned with the through hole 232, the water hole 311, and the water outlet end 43, and the water of the water inlet end 42 is sent to the water outlet end 43 and the water outlet joint 431 via the base 11 of the inner valve unit 10 and the ball valve 21. For users to use water.

Based on the above, the whole disclosed in this creation has industrial practicability and innovative benefits, and its structure has not been seen in various books or publicly used. It is in line with the requirements of new patent applications, so please ask the Bureau to give an early patent grant. prayer.

To be clear, the above is the specific embodiment of the creation and the technical principles applied. If the changes made according to the concept of this creation, the functional role produced by it does not exceed the spirit of the manual and the drawings. At the time, it should be combined with Chen Ming within the scope of this creation.

10‧‧‧Internal valve unit

11‧‧‧Base

20‧‧‧Ball valve group

21‧‧‧Ball valve

22‧‧‧ valve stem

222‧‧‧ lock slot

23‧‧‧ pedestal

232‧‧‧through hole

30‧‧‧ valve seat

31‧‧‧ Body

311‧‧‧ water hole

32‧‧‧Contact hole

33‧‧‧ 托部

331‧‧‧ outer water ring

40‧‧‧External ontology

41‧‧‧ chamber

42‧‧‧ water inlet

43‧‧‧ water outlet

431‧‧‧Water connection

44‧‧‧ group mouth

50‧‧‧ switch handle

51‧‧‧Perforation

511‧‧‧ bolt

Claims (12)

A water stop valve comprising: an inner valve unit comprising at least one ball valve group, a valve seat for plastic material and for the ball valve group, the ball valve group comprising a ball valve and two pedestals, the ball valve laterally A valve hole is disposed through the first hole, and a valve stem is disposed at one end. The pedestal is disposed through a through hole for the two pedestals to be clamped to the outer side of the symmetrical portion of the ball valve. The valve seat includes a tubular body and a body. a water hole extending transversely through the body, and a connecting hole disposed at the closed end of the body, wherein the body is provided with an inner hole corresponding to the through hole communicating with the pedestal, whereby the ball valve is placed The inner hole is configured such that the ball valve is steered to align the flow hole with the water hole and the through hole, and the valve stem is different from the other end of the ball valve and extends out of the valve seat; Providing a body outside the inner valve unit, the outer body forming a chamber to accommodate the inner valve unit, wherein the valve seat is in a fixed state, the outer body includes a water inlet end and a water outlet The water outlet end corresponds to the water hole of the valve seat, the through hole of the pedestal, and the outer body top end The chamber is provided with a set of ports for the valve stem of the ball valve group to extend out, a switch handle is mounted on the top surface of the set of ports, and the valve stem is fixedly coupled to rotate the switch The handle can drive the ball valve to turn to switch out the water and stop the water. The water stop valve of claim 1, wherein the ball valve group of the inner valve unit extends the valve stem at one end to form a single component. The water stop valve of claim 1, wherein the ball valve group of the inner valve unit comprises a ball valve and a valve stem, and a top side of the ball valve is provided with a card slot, and a tongue is protruded from one end of the valve stem a sheet for engaging the tongue and groove in the card slot to be coupled to the ball valve. The water stop valve of claim 1, wherein the ball valve group The pedestal is concavely provided with a curved surface corresponding to the spherical surface of the ball valve, so that the curved surface of the pedestal is correspondingly clamped to the outer side of the ball valve. The water stop valve of claim 1, wherein the water inlet end and the water outlet end of the outer body are at an angle of ninety degrees apart from each other. The water stop valve of claim 1, wherein the water inlet end and the water outlet end of the outer body are on the same horizontal axis. The water stop valve of claim 1, wherein the inner valve unit comprises a valve seat and a base of a plastic material, the base being located on a lower side of the ball valve group, wherein the valve seat is sleeved on the valve seat The ball valve group is on the outer side of the base. The water stop valve of claim 7, wherein the base of the inner valve unit is a hollow circular seat body, one end of which radially protrudes from a bottom edge of the torus, and the hollow portion is an axial through hole. The base is disposed on the top surface of the through hole for the pedestal of the valve ball set, and the valve seat sleeve is disposed on the outer side of the ball valve set and the base, and the valve seat is different from the corresponding hole One end is a bracket extending radially to a ring surface, and a bottom groove is recessed on the bottom side of the bracket for assembling the valve seat to the outside of the base, and the slot is just filled by the bottom edge of the base. The water stop valve of claim 1, wherein the water inlet end and the water outlet end of the outer body are at an angle of ninety degrees apart from each other, and the water inlet end is located at a lower end of the outer body, the outer body a pressure groove is formed at a boundary between the chamber and the water inlet end, and the support portion of the valve seat is embedded with an outer water stop ring on the outer side of the body portion for the pressure groove to be pressed against the outer water stop. On the ring. The water stop valve of claim 1, wherein the water inlet end of the outer body and the water outlet end are disposed on a same horizontal axis, and the outer body is provided with an external thread on the outer side of the group mouth, and the setting a correspondingly coupled cap, the cap is centrally located The valve stem is extended to extend the middle hole, and at least one gasket is disposed on the end surface of the set of ports, and the cap is threadedly engaged with the external thread, and the inner end surface of the cap is pressed against the gasket. The water stop valve of claim 1, wherein the switch handle has a long handle shape, and one end is provided with a through hole, and a top of the valve stem is correspondingly provided with a lock groove for the top surface of the switch handle to be provided with a bolt The perforation is locked to the lock groove of the valve stem. The water stop valve of claim 1, wherein the switch handle has a cap shape and can be sleeved around the outer side of the set of ports, the switch handle is provided with a perforation, and the top of the valve stem is correspondingly provided with a a locking slot for the top surface of the switch handle is provided with a bolt through the through hole to lock the lock groove coupled to the valve stem.