CN217977511U

CN217977511U - Magnetic reversing valve

Info

Publication number: CN217977511U
Application number: CN202221801039.XU
Authority: CN
Inventors: 于国明; 王振宾
Original assignee: LIAONING HUAKE CHINA COAL EQUIPMENT CO Ltd
Current assignee: LIAONING HUAKE CHINA COAL EQUIPMENT CO Ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2022-12-06
Anticipated expiration: 2032-07-12

Abstract

The utility model discloses a magnetism switching-over valve, including valve body, case, blotter, gland, strong magnetic sheet, pan head screw and lower dog. A magnetic reversing valve, through the case about in the valve pocket of valve body extreme position's change, accomplish fluid passage's expert, disconnected, realize that the switching of fluid flow direction changes in the fluid passage, because the extreme position is by magnetic sheet magnetic force locking on the case, magnetic force size is stable, and is repeated unchangeable, reliable lasting.

Description

Magnetic reversing valve

Technical Field

The utility model is used for the rust-resistant switching-over valve of control switching low pressure fluid flow direction is a mechanical power and not electronic magnetism switching-over valve.

Background

The common mechanical power (non-electric) fluid reversing valve is composed of valve body, valve core, sealing ring, end cover (stop block), back cap, spring and ball. Because the structure uses the sealing rubber ring for sealing, the resistance is large, and the spring is used for jacking the locking position of the ball, the switching control is difficult, the locking force is large or small, the switching is difficult due to overlarge locking force, and the locking position with small locking force cannot be locked, so that the conventional reversing valve is unreliable in control, and the use requirements cannot be met under a plurality of application conditions, therefore, the magnetic reversing valve is provided for solving the problem.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a magnetic directional valve, which can effectively solve the problems of the prior art.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

a magnetic reversing valve comprises a valve body, a stainless steel material and a cuboid, wherein a round hole is formed in the middle of the valve body and penetrates through the valve body up and down to form a valve cavity, a valve core can slide up and down in the valve cavity, a threaded hole with the diameter larger than that of the through hole is formed in the upper portion of the valve cavity, and a hole platform is formed; a counter bore is formed in the right adjacent position of the threaded hole, and a threaded hole is formed in the bottom of the counter bore and used for locking the gland; the left side of the valve body is provided with an upper transverse working through hole and a lower transverse working through hole which are communicated with the valve cavity; the right side of the valve body is provided with a transverse working through hole which is communicated with the valve cavity; the valve core is made of stainless steel, the upper end and the lower end of the valve core are cylindrical core columns with equal diameters, the core columns are connected through a sliding rod with the diameter smaller than that of the core columns, and the lower end of the lower core column is provided with a lower sliding rod; the top of the upper core column is provided with a round hole, and a strong magnetic sheet is arranged in the round hole; a cushion pad made of rubber; the valve body comprises a gland, stainless steel materials and a stepped cylinder, wherein the lower end cylinder is provided with an external thread matched with a threaded hole at the upper part of a valve cavity of the valve body; the pan head screw is made of stainless steel and used for locking the gland; the lower stop block is made of stainless steel and is a stepped cylinder with a small upper part and a big lower part, the outer circle of the upper cylinder is tightly matched with the lower end of a valve cavity hole of the valve body, an upper through hole and a lower through hole are formed in the center, and the hole diameter of the upper cylinder is larger than that of the valve core sliding rod.

Preferably, the valve body, the valve core, the gland, the pan head screw and the lower stop block are all made of stainless steel, and are non-magnetic and corrosion-resistant.

Preferably, the center of the valve body is provided with a through hole which is vertically communicated to form a valve cavity; the valve cavity is communicated with two working holes on one side of the valve cavity and is communicated with one working hole on the other side of the valve cavity; the upper end of the valve cavity is provided with a threaded hole and a hole platform; threaded holes are formed beside the threaded holes in the valve cavity.

Preferably, the top of the upper core column of the valve core is provided with a magnetic sheet matched and attracted with the magnetic sheet in the gland.

Preferably, the gland on the upper part of the valve body is provided with a strong magnetic sheet which is matched and attracted with the strong magnetic sheet of the valve core.

Preferably, a buffer pad is arranged at the upper end of the valve cavity of the valve body and between the valve core and the gland.

Preferably, the lower end of the valve cavity hole of the valve body is provided with a lower stop block which is tightly matched with the valve cavity hole.

Preferably, the pan head screw is arranged on the upper part of the valve body and used for locking the gland, and the screw cap head sinks into the valve body and does not protrude out of the surface of the valve body.

Compared with the prior art, the invention has the following beneficial effects:

the utility model discloses a case extreme position's change about in the valve body valve pocket accomplishes fluid passage's expert, disconnected, realizes that the switching of the fluid flow direction in the fluid passage changes, because the extreme position is locked by magnetic sheet magnetic force on the case, the magnetic force size is stable, and is repeated unchangeable, reliably lasting.

Drawings

FIG. 1 is a schematic view of the structure of the lower limit position of the present invention;

FIG. 2 is a schematic view of the upper limit position structure of the present invention;

FIG. 3 is a schematic view of the valve body structure of the present invention;

FIG. 4 is a schematic view of the valve core structure of the present invention;

FIG. 5 is a schematic view of the gland structure of the present invention;

fig. 6 is a schematic view of the lower baffle structure of the present invention.

In the figure: 1-a valve body; 2-a valve core; 3, a buffer pad; 4, pressing a cover; 5-pan head screw; 6-lower stop block.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses the structure includes (1), 1-valve body, and detailed structure sees attached (three), and 1-valve body material is the stainless steel, and no magnetism nature. The structure is that the middle is provided with a through hole which is communicated up and down to form a valve cavity, the upper end of the valve cavity is provided with a threaded hole, the diameter of the threaded hole is larger than that of the through hole to form a hole platform; a counter bore is arranged at the right side of the threaded hole in the valve cavity, and a threaded hole at the bottom of the counter bore is formed; the left end of the valve body is provided with an upper transverse working through hole, namely a lower working hole 1 and an upper working hole 2, and the holes 1 and 2 are respectively communicated with the valve cavity; 1-the right side of the valve body is provided with a transverse working through hole 3 communicated with the valve cavity; in addition, the right side of the valve body 1 is provided with an upper unthreaded hole 4 and a lower unthreaded hole 5 which are independent, are communicated with each other in the front and the back and are installation holes of the reversing valve. (2) And 2-valve core, the detailed structure of which is shown in the attached figure (IV), and the valve core consists of a 2.1-valve core body and a 2.2-strong magnetic sheet, wherein the valve core body is made of stainless steel and has no magnetism. The detailed structure is that the device is composed of an upper and a lower equal diameter cylinder core columns, the middle of the upper and the lower core columns is connected by a slide bar, the lower end of the lower core column extends out of a slide bar and is drilled with a radial pin hole, the two sections of slide bars have equal diameter, and the upper and the lower core columns and the two sections of slide bars are integrated; the upper end of the upper section of core column is provided with a round hole, a disc-shaped strong magnetic sheet is arranged in the round hole, and the upper section of core column is tightly packaged into a whole. 2.2 the strong magnetic sheet is a permanent magnet, and the magnetic force is stable and durable. (3) and (3) the buffer cushion is a circular rubber cushion. (4) And 4, a gland cover which consists of 4.1 gland body and 4.2 ferromagnetic sheets. 4.1-the gland body is made of stainless steel and has no magnetism. The diameter of the upper section of the cylinder is smaller than that of the lower section of the cylinder, the outer circle of the lower section of the cylinder is provided with threads, and the upper section and the lower section form a circular bead; the upper section is provided with a wrench hole for screwing and unscrewing threads; the upper end is provided with a cylindrical hole, and 4.2-strong magnetic sheets are packaged in the cylindrical hole; the 4.2-strong magnetic sheet is made of the same material as the 2.2-strong magnetic sheet packaged in the 2.1-valve core body, and is installed in a matching way and mutually attracted. (5) And 5, the pan head screw is made of stainless steel and has no magnetism. (6) and 6-lower stop block, the material is stainless steel, nonmagnetic. The shape is a stepped cylinder, the size of the outer cylinder of the upper section is the same as that of the lower ends of the upper through hole and the lower through hole of the valve body, and the upper section and the lower section are in tight fit; the middle part is a through hole, and the size of the through hole is larger than that of the sliding rod at the lower end of the valve core body.

Assembling

As shown in the figure (A) and the figure (B), the upper section cylinder of the 6-lower stop block is arranged from the lower end of the valve cavity of the valve body 1 and is in close fit with the valve cavity; 2-the valve core is arranged from top to bottom from the valve cavity of the valve body in the direction shown in the figure, 2-the upper end of the valve core is one end provided with a strong magnetic sheet, the lower end sliding rod penetrates into the middle through hole of the lower stop block and extends out of 6-the lower stop block, and the sliding rod and the lower stop block hole are in large clearance fit and can slide up and down; the two sections of core columns are arranged in a valve cavity of the valve body, are in micro clearance fit and can slide up and down; 1, installing a 3-buffering rubber cushion on a threaded hole platform at the upper end of the valve body; screwing the 4-gland into the middle threaded hole of the valve body and screwing tightly; and screwing the 5-pan head screw into the 1-countersunk head threaded hole on the right side of the threaded hole on the upper end of the valve body, screwing, pressing the lower end face of the cap head on the shoulder of the gland, and locking the 4-gland to prevent the gland from loosening.

Second, principle of action

The figure (I) shows that 2, when a valve core slide rod is pulled down, and the pull-down force is larger than the suction force between strong magnetic sheets at the upper end, the valve core is locked and unlocked, 2, the upper end of the valve core is separated from a lower 3-buffering rubber gasket of a gland, and the valve core is lowered to 2, when the lower end surface of a lower core column of the valve core is contacted with the upper end surface of a 6-lower gear block, the lower limit position is obtained, and at the moment, the lower core column of the valve core is completely staggered with a working hole 1 of a valve body 1 and is communicated with the working hole 3 of the valve body 1 through a valve cavity; the working hole 2 of the valve 1-body is completely sealed and closed by the upper core column of the 2-valve core, and the working hole 2 and the working hole 3 are cut off and blocked.

When the lower sliding rod of the valve core 2 is jacked upwards, the lower sliding rod slides to the upper end face to be contacted with the 3-buffering rubber gasket, the valve core 2 is attracted by the strong magnetic sheet in the gland 4, the position of the valve core is locked to be fixed, namely the upper limit position, as shown in the attached figure (II), the working hole 1 of the valve body 1 is completely plugged and closed by the lower core column of the valve core 2, and the working hole 1 is cut off from the working hole 3; the working hole 2 of the valve body 1 is completely staggered with the upper core column of the valve core 2, and the working hole 2 is communicated with the working hole 3 through a valve cavity. When the sliding rod of the 2-valve core is pulled down and the pull-down force is larger than the magnetic sheet suction force, the 2-valve core slides down to the lower limit position, the working hole 1 is communicated with the working hole 3, and the working hole 2 is blocked from the working hole 3.

By the action, the on-off of the fluid channel is completed through the change of the upper limit position and the lower limit position of the 2-valve core in the valve cavity of the 1-valve body, and the switching conversion of the fluid flow direction in the fluid channel is realized.

Because the upper limit position of the valve core 1 is locked by magnetic force of the magnetic sheets, the magnetic force is stable in size, unchanged in repetition and reliable and durable.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A magnetically switchable valve, characterized by: the valve comprises a valve body (1), a stainless steel material and a cuboid, wherein a round hole is formed in the middle of the valve body and penetrates up and down to form a valve cavity, a valve core (2) can slide up and down in the valve cavity, a threaded hole with the diameter larger than that of the through hole is formed in the upper part of the valve cavity, and a hole platform is formed; a counter bore is formed in the right adjacent position of the threaded hole, and a threaded hole is formed in the bottom of the counter bore and used for locking the gland; the left side of the valve body is provided with an upper transverse working through hole and a lower transverse working through hole which are communicated with the valve cavity; the right side of the valve body is provided with a transverse working through hole which is communicated with the valve cavity; the valve core (2) is made of stainless steel, the upper end and the lower end of the valve core are cylindrical core columns with equal diameters, the core columns are connected through a sliding rod with the diameter smaller than that of the core column, and a lower sliding rod is arranged at the lower end of the lower core column; the top of the upper core column is provided with a round hole, and a strong magnetic sheet is arranged in the round hole; a cushion pad (3) made of rubber; the valve body comprises a gland (4), a stainless steel material, a stepped cylinder and a lower end cylinder, wherein the lower end cylinder is provided with external threads which are matched with a threaded hole in the upper part of a valve cavity of the valve body; the pan head screw (5) is made of stainless steel and used for locking the gland; the lower stop block (6) is made of stainless steel and is a stepped cylinder with a small upper part and a big lower part, the outer circle of the upper cylinder is tightly matched with the lower end of a valve cavity hole of the valve body, an upper through hole and a lower through hole are formed in the center, and the hole diameter of the upper cylinder is larger than that of the valve core sliding rod.

2. The magnetically commutated valve of claim 1, wherein: the valve body (1), the valve core (2), the gland (4), the pan head screw (5) and the lower stop block (6) are all made of stainless steel, and are non-magnetic and corrosion-resistant.

3. The magnetically commutated valve of claim 1 or 2, wherein: a through hole which is communicated up and down is formed in the center of the valve body (1) to form a valve cavity; the valve cavity is communicated with two working holes on one side of the valve cavity and is communicated with one working hole on the other side of the valve cavity; the upper end of the valve cavity is provided with a threaded hole and a hole platform; threaded holes are formed beside the threaded holes in the valve cavity.

4. The magnetically commutated valve of claim 1 or 2, wherein: the top of the upper core column of the valve core (2) is provided with a magnetic sheet which is matched and attracted with the magnetic sheet in the gland.

5. The magnetically commutated valve of claim 1 or 2, wherein: the gland on the upper part of the valve body (1) is provided with a strong magnetic sheet which is matched and attracted with the strong magnetic sheet of the valve core.

6. The magnetically commutated valve of claim 1 or 2, wherein: a buffer pad (3) is arranged at the upper end of the valve cavity of the valve body (1) and between the valve core and the gland.

7. The magnetically commutated valve of claim 1 or 2, wherein: the lower end of the valve cavity hole of the valve body (1) is provided with a lower stop block which is tightly matched with the valve cavity hole.

8. The magnetically commutated valve of claim 1 or 2, wherein: the upper part of the valve body (1) is provided with a pan head screw for locking the gland, and the screw cap head sinks into the valve body and does not protrude out of the surface of the valve body.