JPS5973672A - Construction of distributing valve - Google Patents

Abstract

PURPOSE:To prevent a distributing pipe from protruding from a wall surface and reduce the space required for fitting and piping, by a method wherein a groove functioning as a discharging passage is provided in an inside surface of a valve chamber containing a pilot spool. CONSTITUTION:A pressure fluid supplied through a main pipe P is first fed under pressure into the first-stage pressure acting chamber 21 through a leading hole 31, drives the pilot spool 11 to move rightwards, and opens an outflow port of a leading hole 32. Therefore, the fluid is fed under pressure into the next- stage pressure acting chamber 22, and the pilot spool 12 is operated in a manner similar to that of spool 11. In this operation stroke, the fluid reserved in the chamber 22 is pressurized, is fed under pressure toward a preceding-stage spool chamber 2 through a leading hole 32', and is discharged through a discharging hole 41' drilled at an intermediate part of the chamber 2. The fluid fed under pressure accompanied by the sequential operations is discharged through a discharging hole after passing through a gap part provided at an intermediate part of the preceding-stage pilot spool. Accordingly, various kinds of distributing valves different in discharging direction can be used in the same main body of a valve.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plunger discharge type fluid distribution valve equipped with a pilot spool mechanism.
/-2/23 issue, Tokuko Sho ll0-2776g issue, Jitko Sho 1I3-/3ri 27, Tokko Shogu Otsu-//37g issue, Jitko Sho wo Otsu-6113 issue, Jitko Sho 111r-33119
No. 3, Special Publication II A-3/2S/No., Special Publication No. 35
-3 Ri Otsu No. 1, Special Public Show 3 Otsu-, 20/j Ri No. 1, Special Public Show 1
12-. 2! ;3g2, etc., and relates to an improved structure of a distribution valve shown in the accompanying drawings.

The plunger discharge type fluid distribution valve to which the present invention pertains is such that pressurized oil or grease (hereinafter simply referred to as fluid) is transferred to a small diameter portion in the middle of a pilot spool that is softly sheathed in a spool chamber. The liquid is discharged from a discharge hole opening into the spool chamber using the gap as a passage. Since the discharge hole is opened in the side wall of the spool chamber,
The hole is perforated in a direction perpendicular to the axes of the spool chamber and the pilot spool. Therefore, the discharge port is basically provided in a direction perpendicular to the spool chamber, as specified in the attached drawings of, for example, Japanese Utility Model Publication No. 3-/3-27 and Japanese Patent Publication No. 70022771.

According to the basic structure described above, in the case of normal piping, the discharge port and the distribution pipe connected to the discharge port are perpendicular to the installation surface of the distribution valve (3). Although the valve structure is different, FIG. g of the accompanying drawings shows a remarkable example in which the piping is orthogonal to the mounting surface of the distribution valve. As is clear from this drawing, when the distribution pipe is connected orthogonally to the mounting surface of the distribution valve, the distribution pipe protrudes slightly from the wall surface of the machine, etc. After bending, it is often necessary to collect the pipe again on the wall of the machine and construct the subsequent piping of the distribution pipe. In such a piping configuration, the protruding portion of the 0-minute piping not only reduces the space around the machine, but also causes damage to the protruding portion due to a traffic accident caused by a truck or the like within the factory. Furthermore, the above-mentioned piping configuration in which the distribution piping protrudes does not look good, and furthermore, the distribution piping must be temporarily protruded and then collected again on the machine wall for piping, which saves unnecessary labor and cost during piping construction at the site. As a means of solving problems such as the above-mentioned problems, inconveniences, and piping costs, for example, Utility Model Publication No. 3/-27211 IP,
Tokuko Sho Ig-//371r, Jikko Sho'Ig-3311
(<') The structure shown in the attached drawings such as No. 3 is publicly known.

A feature of these structures is that a conduit hole is provided that conducts at right angles to the discharge hole that opens the discharge port in the spool chamber, and the discharge port is connected to the pilot spool at the outer opening of the conduit hole. (pipe fitting). According to this configuration, although the protrusion of the distribution pipe is eliminated, ■ there is a gap between the axis of the pilot spool and the axis of the discharge port.
Since it is necessary to separate the valves by a considerable distance, the thickness (width) of the distribution valve from the attachment surface (back surface) to the front surface is large compared to its function. ■The machining process of the valve body and the number of parts will increase.

The present invention seeks to overcome the problems set forth below, as well as other problems related to these problems.

A main object of the present invention is to provide a fluid distribution valve equipped with a pilot spool mechanism in which the distribution pipe does not protrude from a wall surface to which the distribution valve is attached.

Another object of the present invention is to provide a fluid distribution valve with a pilot spool mechanism that is smaller in size and requires less installation and piping space.

Another object of the present invention is to provide a fluid distribution valve equipped with a pilot spool mechanism that is easy to install and perform piping work.

Another object of the present invention is to provide a fluid distribution valve with stable functionality while reducing the number of parts and the number of processing steps for a difficult-to-process component, ie, the valve body.

Another object of the present invention is to cope with the diversification in the number of lubricating oil distribution points and supply amount that occurs as mechanical structures become more complex, and to provide fluid distribution valves with different specifications. The purpose is to provide an auxiliary means for product management that can be produced at a low price and quickly supplied upon receiving an order.

A feature of the present invention is that a valve chamber is formed in the valve body, and a cylinder is fitted into the valve chamber to form a spool chamber for accommodating a pilot spool.

Another feature of the present invention is that a groove serving as a discharge passage is provided along the curve of the cylinder on the outer surface of the cylinder or on the inner surface of a valve chamber in which the cylinder is fitted.

Another feature of the present invention is that in conventional distribution valves of the same type,
Although both longitudinal ends of the spool chamber were simply closed off,
A discharge boat can be formed in one or both of the spool chambers with the axis of the spool chamber as the center.

Another feature of the invention relates to the arrangement of the fluid passages within the structure, at least for the essential part of the fluid passage arrangement E, without machining of the nipples which act as cylinders or discharge boats.

The features of the invention will become apparent from the following description of the illustrated embodiments and examples.

FIG. 7 shows a prototype circuit of the embodiment shown in FIGS. 2-6. The type of distribution valve shown in this circuit diagram includes multiple pilot spool mechanisms. This circuit diagram shows a state in which fluid has been supplied from the main pipe P and seven operations have been completed.

(7) In the case of this type of distribution valve, by supplying pressurized fluid from the main pipe P (left), the fluid is first sent under pressure to the pressure action chamber 2/ of the first stage spool chamber through the conduit 3/force chamber. be done. In the pressure action chamber 2/, fluid pressure is applied to the end face of the pilot spool // by the supplied pressurized fluid t, and the pressure action chamber // is moved to the right (pressure action chamber 2/) side. It operates. At the operating limit of the pilot spool //, the outlet of the guide hole 32 opens into the pressure chamber 2/.

The pressurized fluid supplied into the pressure chamber 2 is forced to be fed through the guide hole 3 to the pressure chamber 22 at the next stage by the opening of the outlet of the guide hole 32 . Due to this fluid action, the pilot spool/2 at the next stage operates in the same manner as the pilot spool at the previous stage. During this operating stroke, the operating direction side (right) of the pilot spool/2
The fluid contained in the pressure acting chamber/2.2 is pressurized and sent under pressure to the preceding spool chamber 2 through the guide hole 32. A gap is formed in the spool chamber by a small diameter portion formed in the middle of the pilot spool.

(g) The fluid pumped toward the spool chamber in the previous stage is
It passes through the gap in the middle of the pilot spool and is discharged from the discharge hole lI/' bored in the middle of the spool chamber. This type of distribution valve operates as follows: the pilot spool/3. Furthermore, the pilot valves S disposed in the next stage are operated in sequence. This buy 0.
The fluid pressure-fed as the toss spools are sequentially operated is discharged from the discharge hole through the respective pilot spools (1) or a gap in the middle of the pilot spool at the front stage of the pilot valve S.

In addition, in this type of distribution valve, after the aforementioned seven operations are completed, the pilot spool operates in the opposite direction to the aforementioned operation by switching the fluid supply direction to the main pipe pH. By repeating this action, the distribution and ejection of fluid from each outlet can be repeated.

The basic structure of the embodiments shown in FIGS. 2 to 3 described below is as follows:
It should be understood as being based on the type of FIG. 1 described in E.

Note that the numbers and symbols used in FIG. 1 and the numbers and symbols of the embodiments described below are the same or the same numbers and symbols are used as far as common parts are concerned. Therefore, in understanding this embodiment, please refer to the above-mentioned FIG. 1.

A valve chamber H is arranged in the valve body IO. The cylinders 7/-73 and 71I are fitted into the valve chamber, and a spool chamber having an inner diameter corresponding to a set discharge amount is formed. The cylinders 77-71 are fixed to the valve body 10 with pins O/ to set their angular positions. Pilot spools // to /3 or S are housed in the spool chambers, respectively. Nipples Cg or obturators are fixed to both ends of the cylinders 77 to 73.

In the following description, please refer to FIG. S, which is a sectional view taken along the axis of the cylinder 7/.

Since the cylinder 7/ accommodates the first stage pilot spool//I, its inlet side guide hole 3/, ? / is perforated toward circuit B, 6' side. A guide hole 32° 32 on the outflow side that opens into the spool chamber of the cylinder 7/
' is bored toward the next stage spool chamber (, 2) 11111. Since the circuits B and 6' are placed on the E side in the figure, the discharge hole! /(lI) is provided toward the opposite lower side. This discharge hole II/(4'
), the cylinder surface has discharge passages /II/ and /II/ along the longitudinal direction of the cylinder.
is provided. This discharge passage is formed to extend to a portion where the nipple groove fits into the cylinder 7/(7). At the fitting portion between the nipple and the cylinder 7/(7), the discharge passageway /II/ and the cylinder 7/(
7) hole passage 211/, j+ that penetrates between the inner surface of
/ is provided. An annular groove serving as a passage 311/ is formed in the nipple at the same position as the passage 311/. The annular groove is provided with a passage 4'lI/ bored toward the axis of the nipple. This passage 4'Il/ is connected to the discharge port p formed in the nipple (i).
is connected to. The discharge port is a joint for an installed pipe. Opposed to this nipple CI), an obturator (//) is fitted onto the opposite end of the cylinder 7/. This obturator can, if desired, be replaced by a nipple similar to that described above, as shown, to form another (left-facing) discharge port. Note that a passage is formed by cutting out from inside the valve chamber between the circuit B and the inner surface of the valve chamber H into which the cylinder 7/(7) is fitted.

Hereinafter, parts different from the above-mentioned FIG. S will be explained based on FIG.

Here, the guide hole 33.33 that opens the inlet port communicates with the spool chamber 22 at the previous stage. The guide hole 311°31I communicates with the pilot valve e at the subsequent stage. Discharge hole 173
．． lI3' is arranged in the middle of the cylinder. Each discharge hole 173, 113 has its own discharge passage/17.
3, is engaged with /lI3, and similarly to Fig. 5 described in -11, the ports formed in the nipple (1g') P, P
It is electrically conductive.

As is clear from the explanation in section E, the present invention provides a discharge hole (4')
is perforated in the cylinder (7). P is formed into a nipple that also serves as an obturator and is fitted onto the end of the cylinder (7). The port and the discharge hole (ge) include a discharge passage (groove/lI) machined into the curved surface of the cylinder (7), an intermediate passage (217) also bored in the cylinder, and a nipple C.
g) is communicated by an annular groove (34) machined in the nipple, and a passageway (IIp) also bored in the nipple.

Figure 7 shows seven pilot spool mechanisms and /1
An embodiment of a multi-pipe distribution valve in combination with a 1i1 discharge plunger mechanism is shown. In the embodiments shown in FIGS. 2 to 3 described above, the pilot spool at the latter stage acted as a discharge plunger, but in this embodiment 8, a discharge plunger exclusively for discharge is provided. There is. According to the interpretation that the discharge plunger and the downstream pilot spool in the previous embodiment provide a common discharge function, the embodiment of FIG. 7 and the previous embodiment have the same structure. It is recognized that there is.

7. Components that are common or identical to the embodiment shown in FIG. 7 and the sister example described above are indicated by the same numbers and symbols in the drawings, so the description of FIG. The explanation based on the example is cited.

The present invention addresses the problem of the complication of the fluid passage inside the distributing valve and the difficulty in machining it, which is necessary to achieve the objective, by machining the fluid passage with a cylinder and nipple that have a simple shape that is easy to process. Got it without configuration. As a result of this arrangement, many of the objectives of the present invention have been achieved. Moreover, when the present invention is implemented in the form of the embodiment shown in FIGS. Different distribution valves can be configured within the same valve body. Further, according to the present invention, various distribution valves having different discharge directions can be provided within the same valve body. Furthermore, according to the present invention, distribution valves with different numbers of discharge ports can be provided within the same valve body by the simple operation of replacing the pilot plunger structure/unit.

From what has been described above, the present invention can reduce the inventory of the valve body, which has the highest manufacturing cost, while also achieving the sales advantage of being able to meet the demand for dispensing valves with a wide variety of specifications.

[Brief explanation of drawings]

1 is a circuit diagram showing the basic structure of the embodiment of the present invention shown in FIG. 7, FIG. 2 is a plan view of the embodiment of the present invention based on FIG. 1, and FIG. 3 is a side view of the embodiment of FIG. 2. Figure 1 is a sectional view taken along line 1- in Figure 7, Figure S is a sectional view taken along line S-5 in Figure 3, and Figure 6 is a sectional view taken along line S-5 in Figure 3. , FIG. 7 is a cross-sectional view showing another embodiment, and FIG. 7 is a side view showing a prominent example of a conventional piping state. In the figure, /(//~/3) is the pilot spool, ko is the spool chamber, 2/~, 2t is the pressure action percentage of the variable volume formed at both ends of the spool, and 3 (3/~311) is the guide hole. , I
I (+ / ~g 3) p! The discharge hole, s is the pilot valve, O is the fluid supply circuit, 7 (77-71I) is the cylinder, g (g/~g3) is the nipple, ri is the obturator, 10 is the valve body, /g (/l/~ /13) (/evening) is the discharge passage, 2g (2t/~21I3), 34t
(j4'/~3173) and GU1 (GUGU/~LUG3) each indicate an intermediary passage that communicates between the discharge passage and the discharge port, and O/ indicates a pin that stops the valve body and the cylinder. In addition, the last seven digits of the number from C to E in the figure indicate the arrangement number based on the operating order of the spool, etc. G/B) FIG, 1 Procedural amendment (formality) Director of the Patent Office / Indication of the case 1962 Biological Application No. 1g/3; IIt No. 2 Name of the invention 3 Person making the amendment Relationship with the case Patent applicant address 71I7 Houfu Oaza Shinden 2 Prefectural Housing Building 1, 23 Nittari, Hofu City, Yamaguchi Prefecture
No. 04 February 22nd, Showa SG (shipment date)! L Correction of the specification subject to the amendment B, the title of the invention column in the description of the contents of the amendment, and the name of the invention in the claims, ``Structure of fluid distribution valve'', to ``Structure of distribution valve'', and the attachment. I will correct page 3 of the book #1. The pilot spool is open and the length of the pilot spool is 1/1m.
Limited Specification L [Title of the Invention] Structure 2 of the Akebono Extension Distribution Valve, Scope of Claims] (a) A pilot spool having a small diameter portion in the middle of the longitudinal direction, and a method for accommodating this pilot spool in a 7# movable manner. a cylinder forming a spool chamber; a valve chamber into which the cylinder is fitted; and a valve chamber provided at one end of the spool chamber to close the spool chamber and form a discharge port to force the discharge A nipple is provided as a means for forming an opening intermediary passage between the port and the invasive discharge passage, and is provided in another four groups of the cocoon and Id spool in a state opposite to the nipple, and closes the spool chamber. A nipple similar to the above that closes the aphrodisiac or test spool chamber and forms a discharge port, an inlet of a pair of guide holes bored to open at both ends of the spool chamber, and At the end of the operation, the fluid is communicated with the inlet through a pressure acting chamber formed at the end of the spool chamber/outlet of the pair of guide holes, and into the center of the spool chamber. 7 or 2 discharge holes communicating with the outlet for phosphoric acid, and 7 or 2 discharge holes that are formed along the outer peripheral surface of the cylinder and communicate with the discharge holes @II.
The plunger discharge type φ distribution valve is equipped with a biloft spool mechanism consisting of a discharge passage communicating with the intermediary passage of the nipple. @ It consists of a combination of seven biloft spool mechanisms and a discharge plunger mechanism, and the kJ hole of the pair of outlet openings in the spool guide chamber is the plunger chamber that accommodates the discharge flancher. ) The first claim is characterized in that it communicates with each of both longitudinal ends.
4111 construction of the plunger discharge type 8-distribution piece described in section 4111. 0) Equipped with 4i number of pilot spool mechanisms, each pilot spool performs the function of opening and closing the flow passage of the fluid on the discharge direction and pressurizing side, and the fluid is discharged through the gap of the small diameter part of the pie lift spool in the previous stage. The structure of the 1It4 distribution valve is that the fluid is a plunger discharge type from the pilot spool in the latter stage. ←) A plurality of biloft spool mechanisms are provided, and each of the pilot spool mechanisms is provided with a discharge plunger attached to the pilot spool mechanism, and each of the guide holes opening an outlet in the middle of the spool chamber accommodates the discharge plunger. The pilot spool communicates with each of the longitudinal sides of the plunger chamber, and the pilot spool acts to open and close the flow path of the pressurized fluid in the discharge direction, and also mediates the discharge of the fluid discharged from the discharge plunger force. The structure of a plunger discharge type distribution valve according to claim 1, wherein the structure is characterized in that the structure is characterized in that: 3. Detailed description of the invention

Claims (1)

[Scope of Claims] (a) A pilot spool having a small diameter portion midway along its length, a cylinder forming a spool chamber for slidably accommodating the pilot spool, and a valve chamber into which the cylinder is fitted. , a nipple provided at one end of the spool chamber and serving as means for closing the spool chamber, forming a discharge port, and forming an intermediary passage between the discharge port and a discharge passage described below; an obturator provided at another end of the spool chamber facing the nipple and closing the spool chamber, or a similar nipple closing the spool chamber and forming a discharge port; and the spool chamber. an inlet of a pair of guide holes bored to be open at both ends of the spool, and a pair of inlets connected to the inlet via a pressure acting chamber formed at the end of the spool chamber at the end of the operation of the spool. an outlet of the guide hole, and seven or one discharge hole that opens in the center of the spool chamber and communicates with the outlet through a gap in the small diameter part of the pilot spool at the operating limit of the pilot spool. , a plunger discharge type, characterized in that it is provided with a pilot spool mechanism consisting of a discharge passage formed along the outer peripheral surface of the cylinder and communicating between the discharge hole and the intermediary passage of the nipple, and a car. Structure of fluid distribution valve. - It consists of a combination of 7 pilot spool mechanisms and 7 discharge plunger mechanisms, and the kJ hole of the pair of outlet openings in the middle of the spool guide chamber is connected to the plunger chamber that houses the discharge plunger. Claim 1, characterized in that it communicates with each of both longitudinal ends.
Structure of the plunger discharge type fluid distribution valve described in . C3) Equipped with a plurality of pilot spool mechanisms, each pilot spool functions to open and close the fluid flow passage in the discharge direction and the pressurizing side, and the fluid discharged through the gap in the small diameter part of the pilot spool in the previous stage is connected to the flow passage in the downstream stage. 2. The structure of a plunger discharge type fluid distribution valve according to claim 1, wherein the fluid distribution valve is configured to be pumped by operation of a pilot spool. Item) A plurality of bi-four spool mechanisms are provided, and a discharge plunger is attached to each of the pilot spool mechanisms, and each of the guide holes opening an outlet in the middle of the spool chamber accommodates the discharge plunger. The pilot spool communicates with both longitudinal sides of the plunger chamber, and the pilot spool functions to open and close the flow path of the pressurized fluid in the discharge direction, and mediates the discharge of the fluid discharged from the discharge plunger. A structure of a plunger discharge type fluid distribution valve according to claim 1.