JP3122859U - Two-stage switching air supply valve for combustion furnace - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switching valve for efficiently supplying air to a combustion apparatus such as a stove having mainly two combustion chambers for efficient combustion.
An air inlet is opened at one end, and is fitted into the cylindrical portion of a cylindrical valve body having two outlets at positions that are stepped on the side and substantially opposite each other on the circumference. A rotating shaft provided on the valve body, which is supported by a bonnet fixed to the valve body, in which a cylindrical valve body that forms an opening is disposed at a position corresponding to the inlet and two outlets of the valve body that rotates and rotates. This is a two-stage switching air supply valve in which the valve body can be rotated by a handle attached to the tip of the valve.
[Selection] Figure 11

Description

  The present invention relates to a valve for supplying air to a combustion furnace or an incinerator, and more particularly to a switching valve for sending air to two combustion chambers.

A special valve for sending air for combustion into a conventional combustion furnace or stove is not used, and a stop valve having a linear characteristic of the flow rate according to the opening degree for adjusting the blast volume at most Various types of cock type valves as general three-way valves are known, and in particular, primary and secondary two-stage combustion proposed by the same inventor and applicant. Currently, there is no known rotary cylinder type switching valve for supplying air by branching into two combustion chambers, which is used in a combustion apparatus having a process, and a switching valve that can easily supply air Was desired.
Japanese Utility Model Publication No. 64-7990 Japanese Utility Model Publication No. 6-44554 JP-A-8-145209 JP-A-11-287356 JP 2003-235991 A

  In view of the above circumstances, it is an object of the present invention to provide a switching valve for blowing air in a combustion furnace or the like having a two-stage combustion process.

  One outlet is opened as an air inlet, and two outlets are opened to the side of the cylindrical portion of the cylindrical valve body that is connected to the air supply pipe, at opposite positions on the circumference. A bonnet is provided in the cylindrical body of the valve body, and one end of a cylindrical valve body that is only allowed to rotate is opened, and the opening matches the opening of the valve body. On the side of the body, notch holes serving as air flow passages that match the positions corresponding to the outlets that are opened at two locations of the valve body are opened in non-similar shapes, respectively, so that the maximum supply air to each outlet It is arranged so that air can be supplied at the same time with a phase difference at the time of output, the other end side of the valve body is closed, and a rotating shaft that is rotatably fitted to the bonnet is provided outside the rotating body. Provide a handle such as a lever at the tip of the shaft and rotate the handle to Those that solve the problem as a two-step switching air supply valve configured to be able to force air into the combustion chamber.

  Due to the extremely simple configuration, it is possible to provide a low-cost two-stage switching air supply valve that can efficiently send combustion air to a combustion furnace that is separated into two chambers and incinerated via the primary and secondary combustion processes. Has a unique effect of sufficiently solving the problem.

  Two outlets are opened at opposite positions on the circumference of the cylindrical wall surface of the cylindrical valve body that is open at one end and serves as an air inlet. A cylindrical valve body that forms an opening is fitted at a location corresponding to the position of the outlet, and the rotation of the valve body causes air from two outlets to have a phase difference depending on the degree of opening. It is realized as a valve that can be configured without having to completely shut off the air using a packing.

Hereinafter, the embodiment will be described in detail according to the embodiment of the two-stage switching air supply valve in the present invention shown in the drawings.
1, 2, 3 and 11, 12, 13, 14, 15, and 16, a cylindrical shape that forms an air inlet 2 connected to a pipe or the like at one end. An outlet 3 to the primary combustion chamber and an outlet 4 to the secondary combustion chamber are opened on the side surface of the valve body 1 at different levels and at opposite positions on the circumference as shown in FIGS. The main body 1 is housed in a cylinder and slidably rotates, and is arranged so that one end is opened and located at the same position as the inlet 2 of the valve main body 1, and the size and shape are different on the side surface. The cylindrical notch 7 and the notch 8 are respectively formed by a cylindrical valve body 5 which opens to a position corresponding to the outlet 3 to the primary combustion chamber and the outlet 4 to the secondary combustion chamber of the valve body 1. An air flow path is formed. An end of the valve body 5 opposite to the opening on the one end side is closed, and a rotating shaft 6 is provided outside the valve body 5 so as to be screwed and fixed to the valve body 1. A lever 11 is provided as a handle 11 that is passed through a shaft hole 10 provided in a bonnet 9 for pressing the valve body 1 for preventing the body 5 from being detached and is fixed to a tip portion by a nut 12. The valve body 5 rotates by turning the handle 11 so that the open / close state of the flow path from the inlet 2 to the outlet 3 and the outlet 4 can be selected.

  4 and 5 show an embodiment of the bonnet 9, which is a bonnet 9 with a hook provided with a shaft hole 10 through which the rotary shaft 6 of the valve body 5 passes, and is screwed into the valve body 1. is there. In addition to the present embodiment, the change in the shape and structure of the bonnet 9 is a design problem and can be freely selected.

  FIG. 11 to FIG. 16 show the supply state of the supply air amount according to the opening degree of the valve. 11, 12, and 13 show the fully closed state of the flow path, but the air supplied from the inlet 2 of the valve body 1 is the side wall of the valve body 5 and the outlet 3 and the flow of the valve body 1. By closing the outlet 4, the flow path is closed and no air is supplied to the combustion chamber. 14, 15, and 16 show the opened state when the handle 11 is rotated 180 degrees from this state. In this state, the maximum air flows to the two outlets 3 and 4. It is supplied at the same time. That is, first, air is supplied from the outlet 3 to the primary combustion chamber to burn the object, the gas generated there is guided to the secondary combustion chamber, and air is supplied to this chamber with a time difference to achieve complete combustion. It becomes. This operation can be freely selected such as automatically.

  FIG. 7, FIG. 8, FIG. 9 and FIG. 10 show the relationship between the opening of the valve and the flow rate. FIG. 8 is a development view of the cylindrical portion of the valve body 5. The side wall of the valve body 5 is formed in two upper and lower stages and a parallel part with a semicircular side on one side for blowing air to the upper primary combustion chamber. The other end side is provided with a triangular notch hole 7, and a lower side is provided with a half-circular notch hole 8 for blowing air to the secondary combustion chamber and the other side having a smaller area than the triangular notch hole 7. Thus, the flow rate characteristic associated with the opening is shown to be linear. 7, 9 and 10 show the supply state of air accompanying the opening of the valve body 5 during one rotation from the start point at which the handle 11 starts to be turned. The flow of A to the primary combustion chamber is shown in FIG. After the air is sent to the outlet 3 and reaches the maximum supply amount, the phase difference is added and the supply to the secondary combustion chamber is started. Both of the supply amounts decrease linearly, and the opening degree is approximately 270. It is shown that it reaches a fully closed state. Therefore, it is intended that air can be supplied for the secondary combustion during the primary combustion so that the combustion can be performed more completely. Of course, the shape of the notched hole 7 and the notched hole 8 is not limited to the present embodiment, both of which are formed in a non-similar shape, and desirably the flow rate characteristic may be linear. It is not an essential condition to have linear characteristics.

  As described above, the embodiment of the present invention has been described according to the embodiment shown in the drawings. However, a change such as reversing the positional relationship between the two outlets provided in the valve main body is a design problem, and the selection thereof. Is free. Further, the shape of the valve body itself or the shape of the valve body and the material used for the valve body and the valve body can be freely selected as long as the strength is guaranteed in the usage environment.

  Mostly in the combustion device, it is optimal when supplying air etc. to two places, but as a three-way valve for air that requires two outputs for one input besides the combustion device As long as the air used in the air is supplied, it is not necessary to stop the leak completely, and the valve can achieve its purpose with a very simple configuration.

  It is a top view which shows one Example of the valve in this invention.   It is a front view same as the above.   It is a bottom view same as the above.   It is a front view which shows the Example of a bonnet.   It is a top view which shows the Example of a valve body.   It is a front view same as the above.   It is a valve body outer periphery expansion | deployment base line figure.   It is an expanded view of a valve body cylindrical part.   It is a valve body opening position figure.   It is an opening degree-flow rate characteristic diagram.   It is sectional drawing which shows the closure state of a present Example.   It is AA sectional drawing in FIG.   It is BB sectional drawing in FIG.   It is sectional drawing which shows the plug opened state of a present Example.   It is AA sectional drawing in FIG.   It is BB sectional drawing in FIG.

Explanation of symbols

1 Valve body 2 Inlet 3 Outlet 4 Outlet 5 Valve body 6 Rotating shaft 7 Notched hole 8 Notched hole 9 Bonnet 10 Shaft hole 11 Handle 12 Nut

Claims (1)

  On the side of the cylindrical valve body that opens with one end as an inflow port, two outlets that open substantially opposite to each other are provided, one end that is rotatably fitted to the valve body opens, and the other end The opening of the closed cylindrical valve body is arranged so as to match the opening of the valve body, and the side surface of the valve body has a non-similar shape at a position corresponding to each outlet of the valve body. Notch holes are drilled in the two outlets so that they can be supplied simultaneously with a phase difference when the maximum air flow is reached, and the closed end is penetrated by a bonnet fixed to the valve body. A two-stage switching air supply valve for use in a combustion furnace or the like having two combustion chambers provided with a rotating shaft that allows rotation by an operation of a handle provided on the handle.

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