Three-way valve with good sealing performance

Abstract

The utility model relates to the technical field of three-way valves, in particular to a three-way valve with good sealing performance, which comprises a valve casing and a valve rod, the valve rod is mounted in the valve casing, a sealing ring is mounted between the valve rod and the valve casing, an adjusting mechanism is arranged in the valve casing, a valve seat is mounted in the valve casing, a valve core is mounted at the lower end of the valve rod, and a valve rod is mounted at the lower end of the valve core. A handle is installed at the upper end of the valve rod, and a first channel and a second channel are machined in the two sides of the valve shell correspondingly. According to the three-way valve with the good sealing performance, through cooperation of the valve shell and the adjusting mechanism, the spring stretches out to drive the transverse rod to slide along the inner wall of the bent plate, so that the valve seat is driven to extrude the first sealing body and the second sealing body inwards, and the first sealing body and the second sealing body are tightly attached to the valve element through the valve seat and the hard sealing body; therefore, when the first soft sealing body and the second soft sealing body are used for a long time, good sealing performance can still be achieved, and the situation of water leakage is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to three -way valve technical field, concretely is a three -way valve with good sealing. BACKGROUND

[0002] Three -way valve is a kind of control component of fluid conveying system, with the functions of cutoff, regulation, flow guiding, three -way valve is divided into combined flow valve and shunt valve according to fluid action mode, combined flow valve has two inlets, and combined flow valve flows out from one outlet after combining.

[0003] For example, the announcement number is "CN215720968U" a kind of three-way ball valve of anti-static, sealing ring is fixedly installed at the outer end of gland, can be further strengthened the sealing property between valve stem and spherical valve on the basis of existing packing seal, prevent sundries from entering device interior from connecting, cause jam, to affect the service life of device. But the three-way ball valve of anti-static, only sealing is carried out by sealing ring, in the long-term use process, it is easy to cause sealing ring to wear, to cause water sealing ring place to leak, lead to the problem of reduced sealing property. UTILITY MODEL CONTENT

[0004] The utility model aims at solving only sealing is carried out by sealing ring, in the long-term use process, it is easy to cause sealing ring to wear, to cause water sealing ring place to leak, lead to the problem of reduced sealing property, and a kind of three -way valve with good sealing is provided.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] Design a kind of three -way valve with good sealing, including valve shell and valve stem, the valve stem is installed in the valve shell interior, sealing ring is installed between the valve stem and valve shell, adjusting mechanism is equipped in the valve shell interior, valve seat is installed in the valve shell interior, valve core is installed in the valve stem lower end, handle is installed in the valve stem upper end, first passageway and second passageway are respectively machined in the both sides of valve shell.

[0007] Preferably, the third passageway is machined in the front side of valve shell, and the rigid sealing body is installed on the outer side of valve core.

[0008] Preferably, the adjusting mechanism includes fixed plate and first soft sealing body, a plurality of bent plates are fixedly connected to the inner side of fixed plate, the inner wall of bent plate is slidably connected with cross bar, the both ends of cross bar are fixedly connected with clamping block and valve seat respectively, spring is sleeved on the outer wall of cross bar, the both ends of spring are fixedly connected with bent plate and valve seat respectively, the right side of first soft sealing body is abutted with second soft sealing body.

[0009] Preferably, the left side of first soft sealing body is fixedly connected with valve seat.

[0010] Preferably, the second soft sealing body is fixedly connected with the hard sealing body on the right side.

[0011] Preferably, the first soft sealing body and the second soft sealing body are tightly abutted with the valve core on the inner side.

[0012] The utility model discloses a three-way valve with good sealing performance has the beneficial effect that through the cooperation of valve housing and adjusting mechanism, spring extension drives horizontal rod to slide along the inner wall of bent plate, thereby driving valve seat to press first sealing body and second sealing body inward, and first sealing body and second sealing body are tightly abutted with valve core through valve seat and hard sealing body, so that when first soft sealing body and second soft sealing body are used for a long time, good sealing performance can still be achieved, and water leakage does not occur. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model;

[0014] Figure 2 It is an elevational view of Figure 1 ;

[0015] Figure 3 It is a partial elevational sectional view of Figure 2 ;

[0016] Figure 4 It is a partial enlarged schematic view of A in Figure 3 ;

[0017] Figure 5 It is a plan view of Figure 2 .

[0018] In the drawing: 1, handle, 2, valve rod, 3, first channel, 4, third channel, 5, valve housing, 6, second channel, 7, adjusting mechanism, 701, fixed plate, 702, bent plate, 703, horizontal rod, 704, clamping block, 705, spring, 706, first soft sealing body, 707, second soft sealing body, 8, valve core, 9, sealing ring, 10, valve seat, 11, hard sealing body. DETAILED DESCRIPTION

[0019] The utility model will be further described in connection with the drawings:

[0020] Referring to the accompanying Figures 1-5 : in the embodiment, a three-way valve with good sealing performance, including valve housing 5 and valve rod 2, valve housing 5 inside installation has valve rod 2, and valve rod 2 and valve housing 5 between installation has sealing ring 9, and valve housing 5 inside is equipped with adjusting mechanism 7, and valve housing 5 inside installation has valve seat 10, and valve rod 2 lower end installs valve core 8, and valve rod 2 upper end installs handle 1, and valve housing 5 both sides are respectively processed with first channel 3 and second channel 6.

[0021] A third channel 4 is processed on the front side of the valve housing 5, and a hard sealing body 11 is installed on the outside of the valve core 8. The position of the hard sealing body 11 is tungsten steel alloy. The left side of the first soft sealing body 706 is fixedly connected to the valve seat 10, and the right side of the second soft sealing body 707 is fixedly connected to the hard sealing body 11. The inner sides of the first soft sealing body 706 and the second soft sealing body 707 are both tightly pressed against the valve core 8. The material of the first soft sealing body 706 is polypropylene rubber.

[0022] The adjusting mechanism 7 includes a fixed plate 701 and a first soft sealing body 706. A plurality of bent plates 702 are fixedly connected to the inner side of the fixed plate 701. The inner walls of the bent plates 702 are slidably connected to the cross bar 703. The two ends of the cross bar 703 are fixedly connected to the clamping block 704 and the valve seat 10 respectively. The outer wall of the cross bar 703 is sleeved with a spring 705. The two ends of the spring 705 are fixedly connected to the bent plate 703 and the valve seat 10 respectively. The right side of the first soft sealing body 706 is tightly pressed against the second soft sealing body 707. The material of the second soft sealing body 707 is nitrile rubber.

[0023] Working principle:

[0024] When using a three-way valve with good sealing performance:

[0025] The operator connects the first channel 3, the second channel 6 and the third channel 4 with the corresponding pipes, and the operator turns the handle 1 to drive the valve stem 2 to rotate, thereby driving the valve core 8 to rotate to achieve water flow regulation. The hard seal 11, the first soft seal 706 and the second soft seal 707 play a double sealing role. The first seal 706 is made of polypropylene rubber material. Polypropylene rubber has heat resistance and corrosion resistance. It is inert to most corrosive materials and is particularly stable to water and has good formability. The second seal 707 is made of nitrile rubber material. Nitrile rubber has good water resistance, oil resistance, wear resistance and heat resistance, ensuring the sealing of the housing 5 and reducing the influence of corrosive substances on the sealing effect of the soft seal. At the same time, the sealing ring 9 can increase the sealing between the housing 5 and the valve stem 2;

[0026] When the first soft sealing body 706 and the second soft sealing body 707 are worn out after long-term use, the spring 705 extends to drive the cross bar 703 to slide along the inner wall of the bent plate 702, thereby driving the valve seat 10 to squeeze the first sealing body 706 and the second sealing body 707 inward. The first sealing body 706 and the second sealing body 707 are tightly fitted to the valve core 8 through the valve seat 10 and the hard sealing body 11, so that the first soft sealing body 706 and the second soft sealing body 707 can still provide good sealing performance when used for a long time, and no water leakage will occur.

[0027] Although the utility model has carried on the illustration and the description through the reference preferred embodiment, but, the professional ordinary skilled person should understand, can make various changes in form and detail in the scope of claims.

Claims

1. A three-way valve with good sealing performance, comprising a valve housing (5) and a valve stem (2), the valve stem (2) being installed inside the valve housing (5), characterized in that: The sealing ring (9) is arranged between the valve rod (2) and the valve shell (5), the valve shell (5) is internally provided with the adjusting mechanism (7), the valve shell (5) is internally provided with the valve seat (10), the lower end of the valve rod (2) is provided with the valve core (8), the upper end of the valve rod (2) is provided with the handle (1), and the two sides of the valve shell (5) are respectively provided with the first channel (3) and the second channel (6).

2. The tight-shutoff tee valve of claim 1, wherein: The third channel (4) is arranged on the front side of the valve shell (5), and the hard sealing body (11) is arranged on the outer side of the valve core (8).

3. The three-way valve with good sealing performance according to claim 1, characterized in that: The adjusting mechanism (7) comprises the fixed plate (701) and the first soft sealing body (706), the inner side of the fixed plate (701) is fixedly connected with a plurality of bent plates (702), the inner walls of the bent plates (702) are slidably connected with the cross bars (703), the two ends of the cross bars (703) are fixedly connected with the clamping blocks (704) and the valve seat (10), the outer walls of the cross bars (703) are sleeved with the springs (705), the two ends of the springs (705) are fixedly connected with the bent plates (702) and the valve seat (10), and the right side of the first soft sealing body (706) is tightly abutted against the second soft sealing body (707).

4. The tight-shutoff tee valve of claim 3, wherein: The left side of the first soft sealing body (706) is fixedly connected with the valve seat (10).

5. The tight-shutoff tee valve of claim 3, wherein: The right side of the second soft sealing body (707) is fixedly connected with the hard sealing body (11).

6. The tight-shutoff tee valve of claim 3, wherein: The inner sides of the first soft sealing body (706) and the second soft sealing body (707) are tightly abutted against the valve core (8).

Images