JP6605353B2 - Fluid strainer mounting unit - Google Patents

Description

  In the present invention, the strainer for fluid mounted so as to filter foreign matters and dust in the fluid passing through the pipe can be switched to the reverse flush flow opposite to the normal flow so that the reverse washing can be performed. The present invention relates to a mounting unit for a fluid strainer having a possible reverse cleaning function.

Conventionally, as a mounting unit for a fluid strainer having a reverse cleaning function, a valve member built-in strainer (see Patent Document 1) having the following configuration has been proposed.
“A T-port three-way valve is placed in the inflow passage and connected to the bypass passage. The other end of the bypass passage is connected to the outflow passage through the T-port three-way valve. Connecting to the blow passage through the body, the inflow passage, the bypass passage, the outlet chamber, the filtration portion, and the blow passage communicate with each other, so that the filtration portion is backwashed. "
According to this, it is possible to backwash the filtration part (strainer) without removing it from the pipe, but the configuration becomes complicated because two T-port three-way valves and another valve body are required. -The operation of the three-way valve and the other valve element is also complicated and difficult to understand.

For this, a ball valve (see Patent Document 2) having the following configuration has been proposed.
“A ball valve having a ball valve chamber and a valve body having a vertical axis defined by the inlet and outlet passages. The ball valve element is in the valve chamber. The ball valve element is operated by a control lever to open and close the fluid passage. A basket-type strainer is removably mounted in the passage in the ball valve element, with an internal pilot fluid wash passage connecting the inlet port to the ball valve chamber and a discharge valve communicating with the ball valve chamber. A pilot fluid flush port is provided, and a flow control plug valve is movably mounted in the internal pilot fluid flush passage to selectively pass or block fluid flow therethrough and rotate the ball valve element to the closed position. Then, the flow control plug valve is moved to the open position, and the upstream fluid enters the inlet port and the internal pilot fluid cleaning passage ball valve chamber and the basket strainer. It flows out from the pilot fluid cleaning exhaust port through, for backwashing the dust captured by the basket strainer. "

  According to this, the strainer can be backwashed without removing it from the pipe, and the procedure for switching between the communication state and the backwashing state is easy to understand, but has the following problems. First, the operation of the ball valve element, the operation of the flow control plug valve, and the operation of the discharge pilot ball valve element are necessary, and the operation has not been sufficiently simplified. In addition, the basket-type strainer is built in the ball valve element, and its mounting structure is easy to specialize. Therefore, the cost tends to be high, and the attaching / detaching operation is difficult. Furthermore, the configuration of the ball valve element limits the configuration of the basket-type strainer that can be mounted, thus limiting the degree of design freedom. In addition, this basket type strainer has a particular form in comparison with a general cylindrical strainer, and it is difficult to improve performance, and the cost tends to increase.

In addition, a strainer (see Patent Document 3) having the following configuration has been proposed.
“An inlet and an outlet are formed in the main body, and a ball valve body is rotatably arranged by an external actuator (not shown). A cylindrical filter portion is accommodated inside the ball valve body. An outlet communication path and an inlet communication path are formed at positions substantially orthogonal to each other, a blow path is formed at the lower end of the main body, and the ball valve body is rotated clockwise by an external actuator (not shown) so that the inlet communication path The foreign matter accumulated on the inner peripheral surface of the filter portion can be backwashed by communicating and the inner peripheral portion of the lower end of the filter portion communicating with the blow passage.

  According to this, the cylindrical strainer can be backwashed by switching between the flow state and the backwashing state by a simple operation without removing it from the pipe, but has the following problems. First, the cylindrical strainer has a structure built in the ball valve body, and its mounting structure is easy to specialize. Therefore, the cost tends to be high, and the attaching / detaching operation is difficult. In addition, the structure of the main body that incorporates the ball valve body with the built-in cylindrical strainer tends to be complicated and costly, including a structure that can be easily attached and detached for replacement of the cylindrical strainer. easy. Furthermore, since the form of the cylindrical strainer that can be mounted is limited by the form of the ball valve body, the degree of design freedom is limited. Patent Document 3 does not show a specific assembly structure in which the cylindrical strainer is built in the ball valve body and disposed in the main body.

JP-A-9-164111 (first page) Japanese Patent Laid-Open No. 9-21469 (first page) JP 2013-22480 A (first page)

  The problem to be solved with respect to the fluid strainer mounting unit is that the conventional strainer is built in the ball valve body, and the mounting structure is easy to specialize. In addition, the shape of the cylindrical strainer that can be mounted is limited depending on the shape of the ball valve body, so that the degree of freedom in design is likely to be limited.

  Therefore, the object of the present invention is to switch the flow state and backwashing state by a simple operation without incorporating the strainer in the ball valve body, and to perform backwashing, and the strainer can be easily attached and detached. An object of the present invention is to provide a fluid strainer mounting unit that can increase the degree of freedom.

The present invention has the following configuration in order to achieve the above object.
According to one embodiment of the fluid strainer mounting unit according to the present invention, the fluid strainer mounted so that foreign matter and dust in the fluid passing through the pipe can be filtered, so that it can be backwashed. A fluid strainer mounting unit having a backwashing function that can be switched to a backwashing flow opposite to the flow of the ball valve body that switches between a flow state and a backwashing flow state by a rotating operation, A ball valve body housing portion provided so that the ball valve body is housed in a flow path between an inlet channel serving as a primary side of the strainer and an outlet channel serving as a secondary side; and the ball valve The body storage part is provided in communication with the ball valve body storage part through a flow passage opening provided on the side opposite to the side on which the operation part for operating the ball valve body is disposed, and the strainer is mounted Space to be A strainer storage portion formed so that a flow passage space is provided on both the primary side and the secondary side of the trainer, and the ball valve body storage portion and the secondary side of the strainer in the strainer storage portion are side portions. And connected to the strainer storage portion so as to communicate with the space on the strainer primary portion of the strainer storage portion, and opened in the cleaning process. And a fluid discharge passage provided to discharge the discharged fluid, and the ball valve body communicates with the primary side of the strainer through the flow passage opening except for the surface portion where the operation portion is provided. A strainer side surface portion and a side surface portion assigned to four side circumferences of the ball valve body, the first side surface portion being one of the side surface portions and the strainer side surface portion. A first valve body channel that does not communicate with the inlet channel or the outlet channel during backwashing, and the first valve body channel that does not communicate with the outlet channel during backwashing. The second side surface portion opposite to the one side surface portion and the third side surface portion adjacent to the second side surface portion communicate with each other, communicate with the outlet flow channel from the side portion communication portion at the time of circulation, and at the time of backwashing A second valve body channel that communicates from the inlet channel to the side communication unit; and a fourth side surface that blocks the outlet channel during backwashing and closes the inlet channel when flow stops.

  Further, according to one form of the fluid strainer mounting unit according to the present invention, the strainer is provided in a cylindrical shape, and the inner side which is the primary side from the one end surface of the cylindrical shape defines the flow path opening. The strainer storage part is provided so that the inside of the strainer is a primary side and the outside of the strainer is a space of a secondary side flow path, The fluid discharge path is connected to the inner side of the strainer from the other end surface opposite to the one end surface of the strainer, and is provided to discharge the discharged fluid by being opened in the cleaning process. It can be characterized by being.

  Further, according to one form of the fluid strainer mounting unit according to the present invention, the operation section is provided on the upper side of the ball valve body storage section, and the strainer storage section is provided on the lower side of the ball valve body storage section. It can be characterized by being provided.

  Moreover, according to one form of the mounting unit of the strainer for fluids concerning this invention, the said fluid is tap water and the said piping is a water pipe, It can be characterized by the above-mentioned.

  According to the fluid strainer mounting unit according to the present invention, the strainer can be switched between the flow state and the backwash state by a simple operation without being incorporated in the ball valve body, and the backwasher can be backwashed. It has a particularly advantageous effect that it is easy to attach and detach and can increase the degree of design freedom.

It is a perspective view which shows the external appearance of the form example of the mounting unit of the fluid strainer which concerns on this invention. It is sectional drawing seen from the upper surface which shows the distribution | circulation state of the form example of FIG. It is sectional drawing seen from the left side surface which shows the distribution | circulation state of the form example of FIG. It is sectional drawing seen from the upper surface which shows the backwashing state of the example of FIG. It is sectional drawing seen from the front surface which shows the backwashing state of the example of FIG. It is sectional drawing seen from the left side surface which shows the backwashing state of the example of FIG. It is sectional drawing seen from the upper surface which shows the distribution stop state of the form example of FIG. It is sectional drawing seen from the front surface which shows the distribution stop state of the form example of FIG. It is sectional drawing seen from the left side surface which shows the distribution stop state of the form example of FIG.

  Hereinafter, the example of the mounting unit of the strainer for fluids concerning the present invention is explained in detail with an accompanying drawing (Drawing 1-9). The fluid strainer mounting unit according to the present invention is a normal flow so that the fluid strainer 10 mounted so as to filter foreign matter and dust in the fluid passing through the pipe can be back-washed. It has a backwashing function that can be switched to the reverse backwashing flow.

  Reference numeral 20 denotes a ball valve body, which is provided so as to switch between a circulation state and a backwashing state by a rotating operation. Further, in this embodiment, when the operation handle 41 of the operation unit 40 provided at the upper part is rotated 90 degrees to one side with reference to the distribution state (for example, water flow state in the forward direction) shown in FIG. It is set so that it will be in a flow stop state (for example, a water stop state) when it is in a state and rotated 90 degrees to the other.

  Reference numeral 30 denotes a ball valve body storage portion, in which the ball valve body 20 is stored in a flow path between an inlet channel 32 serving as the primary side 11 of the strainer 10 and an outlet channel 33 serving as the secondary side 12. It is provided as follows. The ball valve body storage unit 30 of the present embodiment includes a main body 31, an inflow side joint 32 a connected to the main body 31 so as to form an inflow channel 32, and an outflow channel 33. And a lid portion 37 connected and arranged so as to block one surface of the side peripheral portion of the main body 31. The ball valve body 20 of the present embodiment is supported by the inflow side joint 32 a, the outflow side joint 33 a, and the lid portion 37 so as to be able to rotate via the seal member 45. In addition, 33b is an outflow side extension expansion joint, is connected to the outflow side joint 33a, and the outflow channel 33 is extended.

  Reference numeral 50 denotes a strainer storage portion, and the ball valve body is provided via a flow path opening 34 provided on the opposite side of the ball valve body storage portion 30 to the side on which the operation portion 40 for operating the ball valve body 20 is disposed. It is provided in communication with the storage unit 30 and is a space in which the strainer 10 is mounted, and is formed so that a passage space is provided on both the primary side 11 and the secondary side 12 of the strainer 10. The flow path opening 34 in this embodiment is provided in the lower part of the strainer storage 50.

  Reference numeral 35 denotes a side communication portion, which is provided so that the ball valve body storage portion 30 and the secondary side 12 of the strainer 10 in the strainer storage portion 50 communicate with each other at the side portion. The side communication part 35 of the present embodiment is a part that becomes one surface of the side peripheral part of the main body 31 divided into four parts, and the inflow side joint 32a, the outflow side joint 33a, and the lid part 37 described above are included. It is formed in a portion corresponding to a surface that is not a connected and mounted portion.

  Reference numeral 60 denotes a fluid discharge path, which is connected to and connected to the strainer storage portion 50 so as to communicate with the space that becomes the primary side 11 of the strainer 10 of the strainer storage portion 50, and is opened in the cleaning process so that the discharged fluid is discharged. It is provided to discharge. The fluid discharge path 60 of the present embodiment is a flow path configured to be connected to a lower opening 51 provided on the lower side of the main body 31 that is the lower side of the strainer storage portion 50. That is, a discharge port joint 61 is connected to the lower opening 51 of the main body 31, and a fluid discharge pipe line 62 is connected to the discharge port joint 61. In this embodiment, the discharge port 63 is connected to the middle part of the pipe line 62. A drain valve 65 that opens and closes the flow path of the pipe line 62 is connected in the vicinity. A handle 65a is provided to open and close the drain valve 65. Further, the discharge port 63 of this embodiment is also a connection port for the extension hose.

  The ball valve body 20 has a strainer side surface portion 23 that faces the primary side 11 of the strainer 10 through the flow path opening 34 except for the surface portion where the operation portion 40 is provided, and a ball valve body. The following configurations are formed for the side surface portions 24, 25, 26, and 27 in which 20 side circumferences are assigned to four.

  First, reference numeral 21 denotes a first valve body channel, which communicates the first side surface portion 24, which is one of the side surface portions, with the surface portion 23 on the strainer side, and flows during distribution (see FIGS. 2 and 3). The inlet channel 32 communicates with the primary side 11 of the strainer 10, and is provided so as not to communicate with the inlet channel 32 and the outlet channel 33 during backwashing (see FIGS. 4 to 6). In addition, at the time of distribution | circulation is the time of water flow, for example.

  Reference numeral 22 denotes a second valve body flow path, which communicates the second side surface portion 25 opposite to the first side surface portion 24 and the third side surface portion 26 adjacent to the second side surface portion 25 during circulation. (See FIGS. 2 and 3), the side communication part 35 communicates with the outlet channel 33, and the back channel (see FIGS. 4 to 6) communicates with the side communication part 35 from the inlet channel 32. It is provided to let you.

  Furthermore, 27 is a 4th side part so that the inflow port flow path 33 may be plugged up at the time of backwashing (refer FIGS. 4-6), and the inflow port flow path 32 may be plugged up at the time of a distribution stop (refer FIGS. 7-9). Is provided. The fourth side surface portion 27 of the present embodiment is configured by a portion where the spherical surface of the ball valve body 20 is left. In addition, the time of distribution stop is, for example, when the water is stopped.

  In the operation method of the fluid strainer mounting unit having the above-described configuration, first, when the operation handle 41 (see FIG. 1) is rotated 90 degrees counterclockwise from the flow state shown in FIGS. 6 can be switched to the backwash state shown in FIG. In this state, reverse cleaning can be performed by operating the drain valve 65 to open the fluid discharge path 60 and discharging the exhausted fluid containing foreign matters and dust due to back cleaning. According to this, foreign matter and dust clogged in the screen of the strainer 10 can be washed away by the pressure due to the backwash flow, and the clogging can be eliminated.

  In a circulation state (for example, a water flow state), the drain valve 65 is operated to open the fluid discharge path 60 and discharge the discharged fluid, thereby performing washing with a flow of the circulation fluid (for example, a water flow). it can. In this cleaning with a water flow, foreign matter and dust accumulated on the primary side 11 of the strainer 10 and the fluid discharge conduit 62 communicating with the primary side 11 can be discharged together with the discharged fluid.

  Also, when the operation handle 41 (see FIG. 1) is rotated 90 degrees clockwise from the flow state shown in FIGS. 1 to 3, the flow stop state (for example, the flow of water is stopped) shown in FIGS. It is a state, and can be switched to a “water stop state” hereinafter. In this water stop state, the fourth side surface portion 27 blocks the inlet channel 32 and the second valve body channel 22 opens to the outlet channel 33, but is blocked by the lid portion 37. Then, the flow to the strainer storage 50 is blocked. For this reason, in this water stop state, the flow of water under pressure does not flow into the strainer housing 50, and the strainer 10 can be appropriately attached and detached without water leakage. it can. That is, the water can be stopped by one turning operation of the operation handle 41, and the strainer 10 can be easily attached and detached.

  According to the fluid strainer mounting unit of the present invention, the strainer 10 can be backwashed by switching between the flow state and the backwashing state by a simple and easy operation. Further, since the strainer 10 is not built in the ball valve body 20, the mounting structure of the strainer 10 is not specialized. Therefore, the strainer 10 can be easily attached and detached, and is easy to manufacture. Furthermore, depending on the form of the ball valve body 20, the form of the strainer 10 that can be mounted is not directly limited, so the degree of freedom in manufacturing design can be increased. For example, as in this embodiment, the strainer 10 having a total length longer than the diameter of the ball valve body 20 can be appropriately mounted and used.

  Further, in this embodiment, the strainer 10 is provided in a cylindrical shape, and the inner side, which is the primary side 11, communicates with the ball valve body storage portion 30 through the flow passage opening 34 from one end surface 13 of the cylindrical shape. It is formed as follows. As this cylindrical strainer 10, a highly versatile product generally mounted on a water pipe can be used. In addition, as an example of the cylindrical strainer 10, a highly air-permeable cylindrical body formed by a perforated plate or the like is used as a base material, and a screen-like member capable of filtering foreign matter and dust is stretched on the inner periphery thereof In addition, there is a structure in which a highly permeable cylinder is provided on the inner periphery as a reinforcing material to withstand backwash flow and is provided in a three-layered cylinder shape.

  The strainer storage 50 is provided so that the inside of the strainer 10 is the primary side 11 and the outside of the strainer 10 is the space of the secondary side 12 flow path, and the fluid discharge path 60 is provided on one side of the strainer 10. The other end surface 14 opposite to the end surface 13 is connected in communication with the inner side (primary side 11) of the strainer 10 and is provided so as to discharge the discharged fluid by being opened in the cleaning process.

  In this embodiment, the cylindrical strainer 10 is arranged in an upright state so that one end surface 13 is an upper surface and the other end surface 14 is a lower surface, and communicates with the primary side 11 of the strainer 10. A fluid discharge pipe 62 is connected to the lower side of the cylindrical strainer 10. As described above, the portion corresponding to the lower portion of the flow path of the fluid discharge pipe 62 communicates with the primary side 11 of the strainer 10 and is positioned below, and thus can be a foreign matter or dust accumulation space. For this reason, the capacity | capacitance which stores a foreign material and garbage becomes large, and the implementation frequency can be decreased about the washing | cleaning process which discharges the accumulated foreign material and garbage by a water flow or a backwash flow.

  Further, in the fluid strainer mounting unit of this embodiment, the operation unit 40 is provided on the upper side of the ball valve body storage unit 30, and the strainer storage unit 50 is provided on the lower side of the ball valve body storage unit 30. According to this, it can utilize appropriately as what is connected to a water pipe. That is, when the fluid described above is tap water and the pipe is a water pipe, according to the fluid strainer mounting unit of this embodiment, it is possible to install it appropriately and compactly in the vicinity of the flow meter. There is.

  In the above embodiment, description has been given of what is used for tap water connected to the middle part of the water pipe, but the present invention is not limited to this, other liquids, gases such as air, compressed or It can also be used by connecting to a pipe that handles a fluid other than tap water, such as a decompressed gas. In addition, when applying the configuration of the present invention to a fluid other than water, set the filter performance and characteristics of the screen and filter medium related to the strainer so as to be compatible with the target fluid, and configure a strainer with a configuration suitable for it. Just prepare.

  As described above, the present invention has been variously described with reference to preferred embodiments. However, the present invention is not limited to the above embodiments, and many modifications can be made without departing from the spirit of the invention. Of course.

DESCRIPTION OF SYMBOLS 10 Strainer 11 Primary side 12 Secondary side 13 One end surface 14 The other end surface 20 Ball valve body 21 1st valve body flow path 22 2nd valve body flow path 23 Strainer side surface part 24 1st side surface part 25 2nd Side face part 26 Third side face part 27 Fourth side face part 30 Ball valve body storage part 31 Main body 32 Inlet channel 32a Inlet side joint 33 Outlet channel 33a Outlet side joint 33b Outlet side extension expansion joint 34 Channel opening 35 Side communication portion 37 Lid portion 40 Operation portion 41 Operation handle 45 Seal member 50 Strainer storage portion 51 Lower opening 60 Fluid discharge passage 61 Discharge port joint 62 Fluid discharge conduit 63 Discharge port 65 Drain valve 65a Handle portion

Claims (4)

Backwashing that can be switched to backwashing flow that is opposite to normal flow so that backwashing is possible for fluid strainers that are installed so that foreign matter and dirt in the fluid passing through the pipe can be filtered. A fluid strainer mounting unit having a function,
A ball valve body that switches between a circulation state and a backwashing state by a rotating operation;
A ball valve body housing portion provided so that the ball valve body is housed in a flow path between an inlet channel serving as a primary side of the strainer and an outlet channel serving as a secondary side;
The ball valve body storage part is provided in communication with the ball valve body storage part through a flow path opening provided on the side opposite to the side where the operation part for operating the ball valve body is disposed, A strainer storage portion formed so that a space for a flow path is provided on both the primary side and the secondary side of the strainer, and a space in which the strainer is mounted;
A side communication portion provided such that the ball valve body storage portion and a secondary side of the strainer in the strainer storage portion communicate with each other at a side portion;
A fluid discharge device that is connected to the strainer storage portion so as to communicate with a space on the strainer primary portion of the strainer storage portion, and is provided to discharge a discharge fluid by being opened in a cleaning process. Road and
The ball valve body includes a strainer-side surface portion that faces the primary side of the strainer through the flow path opening, except for a surface portion where the operation portion is provided, and a side periphery of the ball valve body. About the side parts assigned to the four
The first side surface portion, which is one of the side surface portions, and the surface portion on the strainer side are communicated with each other, communicated from the inlet channel to the primary side of the strainer at the time of circulation, and the inlet channel and A first valve body channel not communicating with the outlet channel;
The second side surface portion opposite to the first side surface portion communicates with the third side surface portion adjacent to the second side surface portion, and at the time of distribution, the side surface communication portion communicates with the outlet channel, and the reverse A second valve body flow passage communicating from the inlet flow passage to the side communication portion during washing;
A fluid strainer mounting unit, comprising: a fourth side surface that closes the outlet channel when backwashing and closes the inlet channel when flow stops. The strainer is provided in a cylindrical shape, and is formed so that an inner side which is the primary side from the one end surface of the cylindrical shape communicates with the ball valve body storage portion via the flow path opening,
The strainer storage portion is provided such that the inside of the strainer is a primary side and the outside of the strainer is a space of a secondary side flow path;
The fluid discharge path is connected to the inner side of the strainer from the other end surface opposite to the one end surface of the strainer, and is provided to discharge the discharged fluid by being opened in the cleaning process. The fluid strainer mounting unit according to claim 1, wherein the fluid strainer mounting unit is provided.   3. The fluid strainer according to claim 1, wherein the operation portion is provided above the ball valve body storage portion, and the strainer storage portion is provided below the ball valve body storage portion. Mounting unit.   The fluid strainer mounting unit according to any one of claims 1 to 3, wherein the fluid is tap water, and the pipe is a water pipe.