A valve for hot and cold water

Abstract

The present invention relates to a valve for hot and cold water, comprising an internally threaded valve body A, a valve core B threadedly connected to the internally threaded valve body A, a handwheel C snap-fitted to the valve core B, and a transparent protective cover D for observing the on / off status of the valve core B. The valve core B comprises a valve core body B1 threadedly connected to the valve body A, a valve stem B2 capable of reciprocating linear motion to achieve valve opening and closing, and a transmission gear sleeve B3 connected to B1 via a transmission connection mechanism B8 and capable of driving B2 to reciprocate linear motion. The cooperation of seals 2 and 3 ensures that the transmission connection mechanism B8 does not come into contact with the medium transported by the pipeline, thereby preventing transmission obstruction or even failure of the transmission connection mechanism B8 due to calcification. Furthermore, the handwheel, through the meshing of the teeth of the transmission gear sleeve B3 with the toothed ribs, can achieve the effect of rotating only without reciprocating linear motion, and only bearing the short-term (instantaneous) torque during the valve opening and closing process, making it less susceptible to damage.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline joints and pipeline valves, in particular to a valve for hot and cold water. Background Art

[0002] A valve is a pipe accessory used to open and close a pipe, control the flow direction, and adjust and control the parameters (temperature, pressure, and flow) of a conveying medium. According to its function, it can be divided into shut-off valves, check valves, regulating valves, etc. The prior art discloses a variety of valves. For example, Chinese invention patent CN209876011U discloses a valve that is easy to control and has good sealing properties, including a valve body, a spherical opening and closing member, and a flow groove. The inner surface of the valve body is provided with an anti-corrosion layer, the inner bottom of the valve body is welded with a flow groove, and a spherical bin is provided in the flow groove by bolts, a spherical opening and closing member is provided in the spherical bin, and the spherical The inner wall of the bin is provided with a slide rail through a limit groove, and high-strength rubber is filled between the spherical bin and the spherical opening and closing member. A hollow valve stem is provided through the upper end of the valve body, and an upper chamber is provided at the top of the valve body. An inspection port is provided on one side of the upper chamber, and the bottom end of the hollow valve stem passes through a threaded sleeve, and a corresponding sealing screw is provided on the threaded sleeve. A press-fit cover is provided at the bottom of the upper chamber, and a sealing ring is provided between the press-fit cover and the hollow valve stem. However, existing valves still generally have the disadvantages of poor sealing effect and poor sealing performance due to long-term use, which leads to calcification of water quality and affects the switch transmission. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a valve for hot and cold water to solve the defects existing in the prior art.

[0004] The technical solution of the present invention to solve the above technical problems is as follows:

[0005] A valve for hot and cold water, comprising an internally threaded valve body, a valve core threadedly connected to the internally threaded valve body, a handwheel snap-connected to the valve core, and a transparent protective cover provided at the center of the top of the handwheel for observing the on / off status of the valve core; wherein the valve core comprises a valve core body threadedly connected to the internally threaded valve body, a valve stem capable of reciprocating linear motion to realize valve opening and closing, a transmission gear sleeve connected to the valve core body via a transmission connection mechanism and capable of driving the valve stem to reciprocate linear motion, a first seal being provided at the externally threaded end of the valve core body; a second annular seal being provided at the position within the valve core body where the valve stem extends, and the second seal being made of a material having a certain hardness; and a third annular seal being provided inside the second seal;

[0006] Furthermore, the third seal is arranged in a groove on the inner side of the valve core body, and the side of the second seal in contact with the valve core body has a protrusion to achieve fixation with the valve core body;

[0007] Furthermore, the handwheel and the valve core body are connected by a snap fastener, which facilitates the disassembly and replacement of the handwheel and the valve core.

[0008] Furthermore, the hand wheel is engaged with the teeth of the transmission gear sleeve through toothed ribs;

[0009] Furthermore, a limit screw assembly connected to the valve stem is provided at the center of the tooth;

[0010] Furthermore, a freely detachable protective sleeve E is provided in the middle of the valve.

[0011] The beneficial effects of the present invention are:

[0012] 1. Use seal 2 to scrape off the attachments generated by water calcification on the valve stem to ensure that seal 3 is not damaged, thereby ensuring the sealing performance of seal 3.

[0013] 2. Double sealing is achieved through seals 2 and 3 to ensure that the transmission connection mechanism does not come into contact with the pipeline transport medium, thereby avoiding transmission obstruction or even failure of the transmission connection mechanism due to calcification.

[0014] 3. The transparent protective cover can prevent impurities from falling into the handwheel, and the valve switch status can be judged by observing the position of the transmission gear sleeve.

[0015] 4. The handwheel is connected to the valve core body through a buckle, which facilitates the disassembly and replacement of the handwheel and valve core.

[0016] 5. The handwheel is engaged with the teeth of the transmission gear sleeve through the toothed ribs, which can realize that the handwheel only rotates without reciprocating linear motion. It only bears the effect of short-term (instantaneous) torque during the valve opening and closing process and is not easy to be damaged.

[0017] 6. Equipped with a freely detachable installation protective cover, taking into account the concealed installation requirements of this valve. After the concealed installation is completed, the valve core can be replaced without damaging the concealed wall and other valve components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the explosion structure of the present invention;

[0021] Figure 4 This is a cross-sectional view of the valve core B of the present invention;

[0022] Figure 5 This is a cross-sectional view of a concealed valve of the present invention;

[0023] The following are the descriptions of the reference numerals:

[0024] A. Internally threaded valve body, B. Valve core, B1. Valve core body, B1-1. Buckle groove, B2. Valve stem, B3. Transmission gear sleeve, B3-1. Gear, B4. Limit screw assembly, B5. Seal 1, B6. Seal 2, B7. Seal 3, B8. Transmission connection mechanism, C. Handwheel, C1. Toothed rib, C2. Buckle, D. Transparent protective cover, E. Protective cover; DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] like Figure 1-5 As shown, a valve for hot and cold water includes an internally threaded valve body A, a valve core B threadedly connected to the internally threaded valve body A, a handwheel C snap-connected to the valve core B, and a transparent protective cover D located at the center of the top of the handwheel C through which the on / off status of the valve core B can be observed. The valve core B includes a valve core body B1 threadedly connected to the internally threaded valve body A, a valve stem B2 capable of reciprocating linear motion to achieve valve opening and closing, a transmission gear sleeve B3 connected to the valve core body B1 via a transmission connection mechanism B8 and capable of driving the valve stem B2 to reciprocate linear motion. A sealing member B5 is provided on the externally threaded end of the valve core body B1. An annular sealing member B6 is provided at the position within the valve core body B1 where the valve stem B2 extends, and the sealing member B6 is made of a material with a certain hardness. An annular sealing member B7 is provided inside the sealing member B6.

[0027] The third seal B7 is disposed in a groove on the inner side of the valve core body B1. The second seal B6 has a protrusion on the side in contact with the valve core body B1 to achieve fixation with the valve core body B1.

[0028] Thus, in a specific implementation, seal B5 between the internally threaded valve body A and the valve core B prevents water leakage. Seal B6, made of a material with a certain hardness, scrapes off deposits on the surface of valve stem B2 caused by water calcification during the valve stem's reciprocating linear motion, preventing them from entering the valve core and damaging seal B7, leading to seal failure. Seal B6 and seal B7 achieve a double seal, ensuring that the transmission connection B8 does not come into contact with the pipeline transport medium, thus preventing transmission obstruction or even failure of the transmission connection B8 due to calcification. Because protective cover D is made of a transparent material, it prevents impurities from falling into the interior of handwheel C and allows the position of transmission gear sleeve B3 to be seen, thereby determining the valve's open / close state, thus achieving visualization of the valve's open / close state.

[0029] In a specific embodiment, the handwheel C and the valve core body B1 are connected by a buckle C2, which facilitates the disassembly and replacement of the handwheel C and the valve core B.

[0030] The handwheel C is meshed with the tooth B3-1 of the transmission gear sleeve B3 through the toothed rib C1, so that the handwheel C can only rotate without reciprocating linear motion, and only bear the short-term (instantaneous) torque during the valve opening and closing process, and is not easily damaged;

[0031] More specifically, a limit screw assembly B4 connected to the valve stem is provided at the center of the tooth;

[0032] In another specific implementation, a freely detachable protective cover E is provided in the middle of the valve, taking into account the concealed installation requirements of the valve. After the concealed installation is completed, the valve core B can be replaced without damaging the installation wall and other valve components.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A valve for hot and cold water, characterized by: It includes an internally threaded valve body, a valve core threadedly connected to the internally threaded valve body, a handwheel snap-connected to the valve core, and a transparent protective cover arranged at the top center of the handwheel for observing the switching status of the valve core; wherein, the valve core includes a valve core body threadedly connected to the internally threaded valve body, a valve stem that can reciprocate linearly to realize valve switching, a transmission gear sleeve connected to the valve core body through a transmission connection mechanism and capable of driving the valve stem to reciprocate linearly, a seal 1 is provided at the externally threaded end of the valve core body; an annular seal 2 is provided at the position where the valve stem extends out of the valve core body, and the seal 2 is made of a material with a certain hardness; an annular seal 3 is provided on the inner side of the seal 2.

2. A hot and cold water valve according to claim 1, characterized in that: The third sealing member is arranged in a groove on the inner side of the valve core body, and the side of the second sealing member in contact with the valve core body has a protrusion to achieve fixation with the valve core body.

3. A hot and cold water valve according to claim 2, characterized in that: The handwheel and the valve core body are connected by a buckle, which facilitates the disassembly and replacement of the handwheel and the valve core.

4. A hot and cold water valve according to claim 3, characterized in that: The hand wheel is meshed with the teeth of the transmission gear sleeve through toothed ribs.

5. A hot and cold water valve according to claim 4, characterized in that: A limit screw assembly connected to the valve stem is provided at the center of the tooth.

6. A hot and cold water valve according to any one of claims 1 to 5, characterized in that: A freely detachable protective sleeve E is provided in the middle of the valve.

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