CN202746623U

CN202746623U - Valve

Info

Publication number: CN202746623U
Application number: CN 201220299989
Authority: CN
Inventors: 苏志军
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-26
Filing date: 2012-06-26
Publication date: 2013-02-20
Anticipated expiration: 2022-06-26

Abstract

The utility model discloses a valve comprising a valve seat, a valve cover and a valve rod, wherein the valve seat is internally divided into a water inlet cavity and a water outlet cavity through a separation plate, and a communication hole is formed in the middle of the separation plate; the side wall of the valve seat is provided with an inlet channel communicated with the water inlet cavity and an outlet channel communicated with the water outlet cavity; the upper end of the valve seat is in threaded connection with the valve cover; a valve plug part is arranged at the lower end of the valve rod; the valve plug part is arranged in the water outlet cavity of the valve seat and a sealing cushion is arranged at the bottom of the valve plug part; a sealing material layer is vertically arranged in the middle of the valve rod; the middle part of the valve rod is connected with the valve cover through a thread; the upper end of the valve rod stretches out of the upper end of the valve cover; one part of the lower part of the valve cover, which stretches into the valve seat, is sleeved outside the valve rod; and a sealing ring for lifting the valve plug part of the valve rod to be pressed and sealed is arranged between the opening part of a valve rod hole of the lower end of the valve cover and the valve plug part of the valve rod. Compared with the prior art, the valve has the good sealing performance under an open state and has the advantages of no water leakage or no gas leakage and no water returning.

Description

Valve

Technical field

The utility model relates to technical field of valve manufacturing, especially a kind of valve for current, air-flow open and close and flow control.

Background technique

Existing valve, especially water valve used in everyday, gas valve and central heating valve, general two kinds of forms: a kind of is diaphragm type, and this mode mainly is used on the water valve, be with the medium of diaphragm of rubber as the cut-off current, diaphragm of rubber be tightened in the water inlet can realize blocking current; Another kind is blade-rotation, and this mainly being used on water valve, gas valve and the central heating valve dammed realizing with the dividing plate shutoff water intake of sheet or suction port; These two kinds of valves all are to seal with the plane, and import namely is outlet in fact, and its sealing effect is poor, easily leaks or leaks gas; In addition, the valve of diaphragm type is subject to twisting certainly will producing when pressing at diaphragm of rubber and stretches and torsional deformation, and diaphragm of rubber very easily damages, and also can cause poor sealing.

The model utility content

Problem to be solved in the utility model provides a kind of valve, and it can solve the sealing effect poor problem of existing valve when long-term opening state.

In order to address the above problem, the technical solution adopted in the utility model is: it includes valve seat, valve gap, valve rod, described valve seat is divided into water-inlet cavity and water chamber by the dividing plate that the centre is provided with intercommunicating pore in it, and the sidewall of this valve seat is provided with the inlet passage that is communicated with described water-inlet cavity and the outlet passage that is communicated with described water chamber; The upper end of described valve seat has been threaded connection valve gap, described valve rod lower end is valve plug portion, and this valve plug portion is contained in the described water chamber of described valve seat, when valve rod is in downward closed condition, described valve plug portion clogs described intercommunicating pore, and described valve plug portion bottom is provided with sealing gasket; The middle part of described valve rod vertically is provided with sealed material layer, and the middle part of described valve rod is connected with described valve gap by screw thread, and outside, described valve gap upper end is stretched out in the upper end of this valve rod; The part that the bottom of described valve gap is stretched in the described valve seat is enclosed within outside the described valve rod, and the valve plug portion that is provided with for described valve rod between the valve plug portion of the valve rod hole opening of described valve gap lower end and described valve rod rises the seal ring that crimping seals.

In the technique scheme, scheme is more specifically: in described seal ring is fixed in the closure gasket groove that the valve rod hole opening of described valve gap lower end is provided with or be fixed on the valve plug portion upper-end surface of described valve rod.

Owing to adopted technique scheme, the utility model compared with prior art has following beneficial effect:

1, because the middle part of valve rod vertically is provided with sealed material layer, and between the valve plug portion of the valve rod hole opening of valve gap lower end and valve rod, be provided with the seal ring that rises the crimping sealing for the valve plug portion of valve rod, can so that this valve obtains good sealability in long opening state, prevent that water or air-flow from leaking from valve stem passage.

2, adopt the structure that is threaded by valve rod with valve gap, so that the open degree of valve can obtain accurate control, to obtain needed emergency degree different current or air-flow, open valve control accurately.

Description of drawings

Fig. 1 is the utility model embodiment 1 structural representation.

Fig. 2 is the utility model embodiment 2 structural representation.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing enforcement:

Embodiment 1 shown in Figure 1, this valve is by valve rod 1, valve gap 3, valve seat 4, and sealed material layer 5 and seal ring 6 consist of.

Valve seat 4 is divided into water-inlet cavity 9 and water chamber 10 by the dividing plate 8 that the centre is provided with intercommunicating pore 7 in it, and the sidewall of this valve seat is provided with the inlet passage 11 that is communicated with water-inlet cavity 9 and the outlet passage 12 that is communicated with water chamber 10; The upper end of valve seat 4 has been threaded connection valve gap 3, and valve rod 1 lower end is valve plug portion 1-1, and this valve plug portion is contained in the water chamber 10 of valve seat 4, and when valve rod was in downward closed condition, valve plug portion 1-1 clogged intercommunicating pore 7, and valve plug portion 1-1 bottom is provided with sealing gasket 13; The middle part of valve rod 1 vertically is provided with sealed material layer 5, the bottom valve rod section of the middle part sealed material layer 5 of valve rod 1 is connected with valve gap 4 by screw thread, and like this, this valve is when being in opening state, the sealability that the energy acquisition is good is prevented sealing or air-flow leaks from valve stem passage; Outside, valve gap 3 upper ends is stretched out in the upper end of valve rod 1, the part that the bottom of valve gap 3 is stretched in the valve seat 4 is enclosed within outside the valve rod 1, be provided with the seal ring 6 that rises the crimping sealing for the valve plug portion 1-1 of valve rod between the valve plug portion 1-1 of the valve rod hole opening of valve gap 3 lower ends and valve rod 1, seal ring 6 is fixed in the closure gasket groove 2 that the valve rod hole opening of valve gap lower end is provided with.

Embodiment 2 as shown in Figure 2, this valve is by valve rod 1, valve gap 3, valve seat 4, sealed material layer 5 and seal ring 6 consist of, difference from Example 1 is, seal ring 6 is fixed on the valve plug portion 1-1 upper-end surface of valve rod 1, seal action was played in seal ring 6 crimping valve gaps 3 lower ends of valve plug portion 1-1 upper-end surface when the valve plug portion 1-1 of valve rod 1 rose, and had prevented the leakage of water clock or the air-flow of water.

Claims

1. valve, include valve seat, valve gap, valve rod, it is characterized in that: described valve seat is divided into water-inlet cavity and water chamber by the dividing plate that the centre is provided with intercommunicating pore in it, and the sidewall of this valve seat is provided with the inlet passage that is communicated with described water-inlet cavity and the outlet passage that is communicated with described water chamber; The upper end of described valve seat has been threaded connection valve gap, described valve rod lower end is valve plug portion, and this valve plug portion is contained in the described water chamber of described valve seat, when valve rod is in downward closed condition, described valve plug portion clogs described intercommunicating pore, and described valve plug portion bottom is provided with sealing gasket; The middle part of described valve rod vertically is provided with sealed material layer, and the middle part of described valve rod is connected with described valve gap by screw thread, and outside, described valve gap upper end is stretched out in the upper end of this valve rod; The part that the bottom of described valve gap is stretched in the described valve seat is enclosed within outside the described valve rod, and the valve plug portion that is provided with for described valve rod between the valve plug portion of the valve rod hole opening of described valve gap lower end and described valve rod rises the seal ring that crimping seals.

2. valve according to claim 1 is characterized in that: described seal ring is fixed in the closure gasket groove that the valve rod hole opening of described valve gap lower end is provided with.

3. valve according to claim 1, it is characterized in that: described seal ring is fixed on the valve plug portion upper-end surface of described valve rod.