CN2214570Y

CN2214570Y - 3-way cock

Info

Publication number: CN2214570Y
Application number: CN 95233253
Authority: CN
Inventors: 刘宝璋
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-03-01
Filing date: 1995-03-01
Publication date: 1995-12-06
Anticipated expiration: 2005-03-01

Abstract

The utility model provides a technical proposal of a three-way plug value which is suitable for using on a single-pipe heating system. The three-way plug value has the split-flow regulation function and the split-flow regulation. The technical proposal is characterized in that a tapered valve core in a valve body is provided with a fan-shaped conducting slot; the small diameter end of the valve core is on the upper part; an upper valve rod is extend out of the valve body; the upper valve rod and the valve body are seal by adopting the rotary seal; the big diameter end of the valve core is provided with a lower valve rod which is matched with a lower valve cover; the shaft center of the top of the lower valve rod is provided with a shaft-direction blind hole; an inner spring is contact with the lower valve cover to provide the needed pressure of the matching of the valve core and the valve body. Additionally the upper part of the valve body is also provided with a rotatable decorative flange, and the top of the upper valve rod is provided with a composite handle which can indicate the spilt flow quantity and the turn-off state.

Description

3-way cock

The utility model relates to the valve in the pipeline parts, especially have the threeway plug valve of adjusting and closing function.

Adopting the stopcock of taper valve core in the prior art, all is that the larger diameter end of taper valve core is connected with upper valve rod last.For avoiding leaking the cone match tension that often makes valve body and spool, cause valve core rotation difficulty and accelerate the wearing and tearing of the conical surface; In addition, the cross section of medium channel is a T shape on spool, also the needs on the incompatibility single tube system heating system shunting adjusting function.And the three-way valve with adjusting and turn-off function that is suitable for is that Patent Office of the People's Republic of China is disclosed, and the patent No. is No. 94240428.9 patents.But the spool of this three-way valve is an open-core type, and this has just increased the difficulty on the manufacturing process, has improved processing cost.Ancestor the above, in the prior art, all have deficiency.

The purpose of this utility model, be exactly at the existing in prior technology deficiency, still adopt conventional taper valve core, really can reach and to guarantee sealing, do not make the cone match tension again, can also satisfy the heat threeway plug valve technological scheme of desired shunting adjusting and turn-off function of single tube system.

This programme is realized by following technical measures.Main by the valve body 11 that three medium channels are arranged, the threeway plug valve that spool 12 that is mated and upper valve rod 7 constitute, the characteristics of this programme are, the smaller diameter end of taper valve core 12 be upwards and have upper valve rod 7 to stretch out valve body 11, the larger diameter end of spool 12 is in bottom flange 13 cooperations following and that lower valve rod 14 is arranged and be connected with valve body 11 with screw thread, having cross section in the position of spool 12 axial corresponding valve body 11 medium channels is the fan-shaped conduction trough 2 of 250-270 degree, regulates the flow direction of medium in order to shunting.Rotary seal 4 is equipped with in outlet port at the top of valve body 11 upper valve rod 7, and the sealing cap 8 that is threaded with valve body 11 usefulness is arranged on it, constitutes the sealing to upper valve rod 7.The impacting force of sealing cap 8 does not form axial pressure to spool 12, only upper valve rod 7 is constituted the required radial pressure of sealing.Between sealing cap 8 and valve body 11, can on it label can be housed around the decoration flange 10 of spool 12 rotational in addition in addition.Between described lower valve rod 14 and bottom flange 13, seal ring 15 is arranged, be processed with axial blind hole 18 at place, the axle center of 14 times end faces of lower valve rod again, spring 17 is housed in it and contacts with bottom flange 13; Also has sealing gasket 1 between bottom flange 13 and the valve body 11.On the top of upper valve rod 7 combined handle 9 is housed in addition, this combined handle 9 is handle basal discs 6 that the mounting hole 19 that cooperates with upper valve rod 7 top square toes is arranged by place, an axle center, but mint-mark has installation direction and regulated quantity and turn-offs sign on it, and adorning one at cover on the handle basal disc 6 has 90 degree breach to constitute with the handle rotating disk 5 that appears sign on the handle basal disc 6.This programme also has following concrete characteristics, and promptly being equipped with along bus between spool 12 that cooperatively interacts and valve body 11 has a valve pocket that cracks 3.Also have in the upper end of blind hole 18 inner springs 17 of lower valve rod 14 steel ball 16 is housed.

What this programme upper valve rod place valve body adopted is rotary seal, can not produce axial pressure to spool, be connected with upper valve rod and taper valve core is a smaller diameter end,, also can not cause the tension that cooperates between spool and the valve body even if in transit axial impact is appearred in upper valve rod.Cooperating pressure between valve body and valve rod, then is to be given by the spring between lower valve rod and bottom flange, therefore, the problem of tension can not occur cooperating; Even if fitting surface produces wearing and tearing,, can the cooperation of valve body and spool not impacted because of the compensation of spring is arranged yet.In addition,, can guarantee threeway plug valve in any direction, only need to rotate and decorate flange, all can make the label on the flange be in positive apparent direction, can satisfy the needs of single tube system heating system no matter install because of the existence of rotating decoration flange is arranged.And combined handle can clearly show the state of shunting regulated quantity or shutoff, and is extremely easy to use.This shows, the utility model compared with prior art, its effect is conspicuous.

Description of drawings:

Fig. 1 is the utility model embodiment's a sectional structure schematic representation:

Fig. 2 be the A-A of Fig. 1 to cross-sectional schematic:

Fig. 3 be the B of Fig. 1 to schematic representation:

Fig. 4 is the schematic representation of handle basal disc in the utility model combined handle.

Below by a specific embodiment and in conjunction with its accompanying drawing, the utility model is further elaborated.Threeway plug valve is a valve body 11 that three medium channels are arranged, and the chamber is equipped with that match with taper valve core 12 and along bus a valve pocket that cracks 3 is arranged within it.The smaller diameter end of taper valve core 12 be upwards and have upper valve rod 7 to stretch out valve body 11, the larger diameter end of spool 12 is in bottom flange 13 cooperations following and that lower valve rod 14 is arranged and be connected with valve body 11 with screw thread, having cross section in the position of spool 12 axial corresponding valve body 11 medium channels is the fan-shaped conduction troughs 2 of 260 degree, the flow direction of regulating medium in order to shunting.Rotary seal 4 is equipped with in outlet port at the top of valve body 11 upper valve rod 7, and the sealing cap 8 that is connected with valve body 11 usefulness spiral shell mosquitos is arranged on it, constitutes the sealing to upper valve rod 7.The impacting force of sealing cap 8 does not form axial pressure to spool 12, only upper valve rod 7 is constituted the required radial pressure of sealing.In addition between sealing cap 8 and valve body 11, can the label of band sign be housed on it around the decoration flange 10 of spool 12 rotational in addition, because it is rotatable to decorate flange 10, so how regardless of the installation direction of stopcock, always the sign on the label is faced.Between described lower valve rod 14 and bottom flange 13, seal ring 15 is arranged, constitute the sealing of 14 of bottom flange 13 and lower valve rods.Be processed with axial blind hole 18 at the place, axle center of 14 times end faces of lower valve rod again, steel ball 16 and spring 17 are housed in it, spring 17 contacts with bottom flange 13, makes spool 12 be subjected to axial force upwards, has guaranteed that valve body 11, spool 12 cooperate required pressure.Also have sealing gasket 1 between bottom flange 13 and the valve body 11, be used for being connected of sealed

valve body

11 and 13 of bottom flanges.On the top of upper valve rod 7 combined handle 9 is housed in addition, this combined handle 9 is handle basal discs 6 that the mounting hole 19 that cooperates with upper valve rod 7 top square toes is arranged by place, an axle center, but mint-mark has installation direction and regulated quantity and turn-offs sign on it, and adorning one at cover on the handle basal disc 6 has 90 degree breach to constitute with the handle rotating disk 5 that appears sign on the handle basal disc 6.

Claims

1, threeway plug valve mainly is by the valve body that three medium channels are arranged (11), spool that is mated (12) and upper valve rod (7) constitute, of the present utility model being characterised in that, the smaller diameter end of taper valve core (12) be upwards and have upper valve rod (7) to stretch out valve body (11), the larger diameter end of spool (12) is in bottom flange (13) cooperation following and that lower valve rod (14) is arranged and be connected with valve body (11) with screw thread, and having cross section in the position of the axial corresponding valve body of spool (12) (11) medium channel is the fan-shaped conduction trough of 250-270 degree (2); Rotary seal (4) is equipped with in outlet port at the top upper valve rod (12) of valve body (11), have on it and valve body (11) sealing cap (8) that is threaded, and in addition can be around the decoration flange (10) of spool (12) rotational between sealing cap (8) and valve body (11); Between described lower valve rod (14) and bottom flange (13), seal ring (15) is arranged, down be processed with axial blind hole (18) in the place, axle center of end face at lower valve rod (14) again, spring (17) is housed in it and contacts with bottom flange (13); Between bottom flange (13) and valve body (11), also has sealing gasket (1); On the top of upper valve rod (7) combined handle (9) is housed in addition, this combined handle (9) is the handle basal disc (6) that the mounting hole (19) that cooperates with upper valve rod (7) top square toes is arranged by place, an axle center, and cover adorns one on it has the handle rotating disk (5) of 90 degree breach to constitute.

2, threeway plug valve according to claim 1 is characterized in that being equipped with along bus between spool that cooperatively interacts (12) and valve body (11) valve pocket that cracks (3) is arranged.

3, threeway plug valve according to claim 1 is characterized in that also having steel ball (16) in the upper end of blind hole (18) inner spring (17) of lower valve rod (14).