CN218377759U

CN218377759U - PP-R pipeline gate valve

Info

Publication number: CN218377759U
Application number: CN202222840710.8U
Authority: CN
Inventors: 潘心争; 陈际; 陈忠; 陈军豪
Original assignee: SHANGHAI SHANGSU HOLDINGS GROUP
Current assignee: SHANGHAI SHANGSU HOLDINGS GROUP
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-01-24
Anticipated expiration: 2032-10-27

Abstract

The utility model provides a PP-R pipeline gate valve, its characterized in that: the metal insert is composed of an upper cylindrical part and a lower cylindrical part; the valve cover is arranged on the metal insert, the valve cover is communicated up and down, the flashboard is connected to the lower end part of the valve rod, and the valve rod and the flashboard are positioned in a vertical channel formed by the metal insert and the valve cover; the shutoff structure of the flashboard is in a circular board block shape, and the inner wall of the lower cylindrical part of the metal insert is provided with an annular clamping groove matched with the shape of the shutoff structure; the valve cover is divided into a first section, a second section, a third section, a fourth section and a fifth section from top to bottom according to different outer diameters, and a hand wheel is clamped and sleeved on the first section; a ball nut structure is arranged inside the second section, the valve rod is a screw rod, and the valve rod and the ball nut structure form a ball screw; a flashboard limiting bulge is formed on the inner wall of the third section; an annular flange is formed on the outer wall of the fourth section, and a sealing ring is arranged between the annular flange and the metal insert; the outer wall of the fifth section is provided with external threads, and the valve cover is in threaded connection with the metal insert.

Description

PP-R pipeline gate valve

Technical Field

The utility model relates to the technical field of valves, in particular to PP-R pipeline gate valve.

Background

The PP-R pipeline has the advantages of energy conservation, environmental protection, high compressive strength, corrosion resistance, smooth inner wall, difficulty in scaling, convenience in construction and the like, and is widely used in a water supply system in a building house. The PP-R pipeline is usually provided with a stop valve on a household pipeline, and the check valve of the PP-R pipeline is preferably a PP-R valve made of the same material. For example, patent document No. CN201020581235 discloses an integrated PP-R gate valve, which works according to the following principle: the hand wheel drives the valve rod to rotate, so that the valve rod moves upwards or downwards, and the flashboard connected with the tail end of the valve rod is driven to move upwards to open or move downwards to close the valve, but the hand wheel has the following defects: 1) Its hand wheel of valve is lug connection valve rod upper end, when the valve rod rebound to the valve open, the valve rod upper end had very long one section to expose in the external world this moment, if the valve rod adopts plastics preparation then can have the problem that intensity is not enough, if adopt the metal valve rod, the part that the metal valve rod exposes in the external world after a period can corrode easily and rust, this moment the valve rod rebound then appear most likely that the section of rustting can not continue down the condition of removal, lead to the gate valve to become invalid. 2) The pipe wall of the transverse through passage of the valve body has more gullies in the middle position, and the middle position is provided with more gullies because the flow cross-sectional area of the valve body per se is smaller than that of the two sides, so that when the gate valve is fully opened, fluid flows through the middle position and is subjected to larger resistance, and the gate valve is easy to scale. 3) The lower end part of the gate plate is completely closed by being embedded into the wedge-shaped groove, and the inclination of the surface of the gate plate needs to be completely matched with the inclination of the wedge-shaped groove, so that the precision requirement of the structure is very high during production and processing, and a high production process is needed if an ultrahigh yield is ensured, so that the production cost is high.

In view of the above, there is a need for a PP-R gate valve with a more optimized structure to solve the problem of the defects of the PP-R gate valve in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a solve above-mentioned problem and go on, aim at provides a structure is optimized more, life is longer, manufacturing process is simpler PP-R pipe sluice valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a PP-R pipeline gate valve, including valve body, hand wheel, valve rod, valve gap, flashboard and sealing washer, the valve body comprises PP-R valve pipe and the metal inserts of embedding in PP-R valve pipe is inside, its characterized in that: the metal insert is composed of an upper cylindrical part and a lower cylindrical part, the radial direction of the upper cylindrical part is the vertical direction, and the radial direction of the lower cylindrical part is the horizontal direction; the valve cover is arranged on the metal insert, the valve cover is communicated up and down, the flashboard is connected to the lower end part of the valve rod, and the valve rod and the flashboard are positioned in a vertical channel formed by the metal insert and the valve cover; the flashboard is provided with a connecting structure and a cut-off structure, the cut-off structure is in a circular plate shape, and the inner wall of the lower cylindrical part of the metal insert is provided with an annular clamping groove matched with the cut-off structure in shape; the valve cover is divided into a first section, a second section, a third section, a fourth section and a fifth section from top to bottom according to different outer diameters, and the first section is sleeved with the hand wheel in a clamping manner; a ball nut structure is arranged inside the second section, the valve rod is a screw rod, and the valve rod and the ball nut structure form a ball screw; a flashboard limiting bulge is formed on the inner wall of the third section; an annular flange is formed on the outer wall of the fourth section, and the sealing ring is arranged between the annular flange and the metal insert; the outer wall of the fifth section is provided with an external thread, the upper end part of the upper cylindrical part is provided with an internal thread, and the valve cover is in threaded connection with the internal thread of the metal insert through the external thread.

Further, in the PP-R pipe gate valve provided by the present invention, it is also able to have the following features: the PP-R valve pipe is provided with a vertically through upper end part and a horizontally through lower pipe part, an upper cylindrical part of the metal insert is correspondingly positioned in the upper end part, a lower cylindrical part of the metal insert is correspondingly positioned in the lower pipe part, and the outer peripheral wall of the upper end part is prismatic.

Further, in the PP-R pipe gate valve provided by the present invention, it can also have the following features: wherein, the outer wall of the upper cylindrical part of the metal insert is provided with an annular convex structure along the circumferential direction, and the section of the annular convex structure is in a crotch shape.

Further, in the PP-R pipe gate valve provided by the present invention, it is also able to have the following features: the circular surfaces of the two sides of the closure structure of the flashboard are symmetrically provided with circular grooves, and the diameters of the circular grooves are smaller than the inner diameter of the lower cylindrical part of the metal insert.

Further, in the PP-R pipe gate valve provided by the present invention, it is also able to have the following features: the bottom of the hand wheel is provided with a clamping hole which is a rectangular hole or a triangular hole, and the outer wall of the first section of the valve cover is correspondingly arranged to be in a quadrangular prism shape or a triangular prism shape matched with the outer wall of the first section of the valve cover.

Further, in the PP-R pipe gate valve provided by the present invention, it can also have the following features: wherein, the periphery wall of hand wheel is provided with a plurality of vertical archs.

The utility model discloses an effect and effect:

1. the utility model discloses a PP-R pipeline gate valve structural design scientific and reasonable, the upper end of valve rod can not expose externally all the time, is located the casing inside, has avoided exposing the problem of rusty corrosion and inefficacy.

2. The utility model discloses an among the PP-R pipeline gate valve, the pipe wall intermediate position of valve body medium circulation is comparatively smooth, and the structure is more reasonable, has reduced scaling, to the resistance of rivers, does not the vortex.

3. The utility model discloses an among the PP-R pipeline gate valve, the part of damming of flashboard is circular plate-shaped, with metal insert's ring groove phase-match block, has realized the complete closure of pipeline behind the block, and closed sealing performance is good, and is obvious to the medium fluid shutoff effect to this structure is not high to the manufacturing accuracy requirement, and production manufacturing process is simple.

4. The utility model discloses an among the PP-R pipeline gate valve, not restricted by the flow direction, the two-way flow function, medium fluid can follow arbitrary one side and get into the gate valve.

5. The utility model discloses an among the PP-R pipeline gate valve, because the circular recess setting of flashboard for the in-process operation of opening and closing the flashboard is more laborsaving.

Drawings

FIG. 1 is a perspective view of a PP-R pipeline gate valve according to an embodiment of the present invention;

FIG. 2 is a schematic view of the internal structure of a PP-R pipeline gate valve according to an embodiment of the present invention (when the gate plate is fully closed);

FIG. 3 is a schematic diagram of the internal structure of a PP-R pipeline gate valve (when the gate plate is not completely closed) in an embodiment of the present invention;

FIG. 4 is a schematic diagram of the internal structure of a PP-R pipe gate valve (when the gate plate is fully opened) in an embodiment of the present invention;

FIG. 5 is an enlarged view of FIG. 4 at A;

fig. 6 is a perspective view of a shutter in an embodiment of the present invention;

fig. 7 is a schematic view of a handwheel in an embodiment of the invention as seen from the bottom.

Reference numerals are as follows: a valve body 1; a PP-R valve tube 11; an upper end portion 111; a lower pipe portion 112; a metal insert 12; an upper cylindrical portion 121; annular projection structure 121a; internal threads 121b; a lower cylindrical portion 122; a ring slot 122a; a hand wheel 2; a vertical protrusion 21; a valve stem 3; a valve cover 4; a first section 41 of the valve cover; a second section 42 of the valve cover; a ball nut structure 421; a third section 43 of the valve cover; a shutter stopper protrusion 431; a fourth segment 44 of the valve cover; a fifth section 45 of the valve cover; a shutter 5; a connecting structure 51; the shut-off structure 52; a circular groove 521; and a seal ring 6.

Detailed Description

In order to make the technical means, creation characteristics, achievement purpose and efficacy of the utility model easy to understand, the following embodiments are combined with the accompanying drawings to specifically explain the technical scheme of the utility model.

As shown in fig. 1 and 4, the present embodiment provides a PP-R pipeline gate valve, which includes a valve body 1, a hand wheel 2, a valve rod 3, a valve cap 4, a gate plate 5, and a sealing ring 6.

As shown in fig. 2, the valve body 1 is composed of a PP-R valve tube 11 and a metal insert 12 embedded inside the PP-R valve tube 11. The PP-R valve tube 11 has an upper end 111 penetrating vertically and a lower tube 112 penetrating horizontally. As shown in fig. 1, the outer circumferential wall of the upper end 111 is formed in a hexagonal prism shape, which facilitates gripping of the PP-R pipe gate valve during installation. The down pipe 112 is used for water flow.

The metal insert 12 is composed of an upper cylindrical portion 121 and a lower cylindrical portion 122, the radial direction of the upper cylindrical portion 121 is a vertical direction, and the radial direction of the lower cylindrical portion 122 is a horizontal direction. The upper cylindrical portion 121 of the metal insert 12 is correspondingly located within the upper end portion 111 of the PP-R valve tube and the lower cylindrical portion 122 of the metal insert 12 is correspondingly located within the lower tube portion 112 of the PP-R valve tube. As shown in fig. 4, the inner wall of the middle position of the lower pipe portion 112 of the PP-R valve pipe is smooth, and except the position where the metal insert 12 is installed, the rest of the middle position of the lower pipe portion 112 of the PP-R valve pipe is a smooth surface, so as to avoid the structural defect of the prior art that too many ravines are provided.

As shown in fig. 4, the upper end portion 111 of the upper cylindrical portion 121 of the metal insert is provided with an internal thread 121b. As shown in fig. 4 and 5, the outer wall of the upper cylindrical portion 121 of the metal insert is provided with an annular protrusion structure 121a along the circumferential direction, the section of the annular protrusion structure 121a is in a fork shape, and the annular protrusion structure increases the combining ability of the PP-R plastic material of the outer PP-R valve tube and the metal insert, so that the combination is firmer. The metal insert 12 is preferably made of copper or stainless steel. The inner wall of the lower cylindrical portion 122 of the metal insert 12 is provided with an annular catch groove 122a matching the shape of the shutter.

As shown in fig. 1 to 4, the valve cover 4 is mounted on the metal insert 12. The valve cover 4 is vertically through. The gate plate 5 is connected to the lower end part of the valve rod 3, and the valve rod 3 and the gate plate 5 are positioned in a vertical passage formed by the metal insert 12 and the valve cover 4.

As shown in fig. 1 and 3, the valve cover 4 is divided into a first section 41, a second section 42, a third section 43, a fourth section 44, and a fifth section 45 from top to bottom according to the difference in outer diameter.

The first section 41 of the valve cover is used to mount a hand wheel. The bottom of the hand wheel 2 is provided with a clamping hole which is a rectangular hole or a triangular hole, and the outer wall of the first section 41 of the valve cover 4 is correspondingly arranged to be in a matched quadrangular prism shape or triangular prism shape. In the present embodiment, the engaging hole 22 of the handwheel 2 is a square hole as shown in fig. 7, and correspondingly, the outer wall of the first section 41 of the valve cover is correspondingly provided with a matching regular quadrangular prism as shown in fig. 1. The hand wheel 2 is sleeved on the periphery of the first section 41 of the valve cover through a clamping sleeve.

The inside of the second section 42 of the valve cover is provided with a ball nut structure 421, the valve rod 3 is a metal screw, and the valve rod 3 and the ball nut structure form a ball screw. The ball screw is a basic mechanical structure in the prior art, and the working principle of the ball screw is that the rotary motion of the screw matched with the ball nut is converted into linear motion.

As shown in fig. 3, the inner wall of the third section 43 of the bonnet is formed with a shutter stopper protrusion 431 for stopping the shutter moving upward. As shown in fig. 1, the outer wall of the third section 43 of the valve cover is hexagonal prism, which can function similar to a hexagonal nut, and when a factory or a constructor pre-assembles the valve cover and the valve body, the valve cover can be screwed by a wrench, which is convenient to install.

As shown in fig. 2 and 3, the outer wall of the fourth section 44 of the bonnet forms an annular flange, and the sealing ring 6 is disposed between the annular flange and the metal insert 12.

As shown in fig. 3, the outer wall of the fifth section 45 of the valve cover is provided with an external thread, and the valve cover 4 is installed in a threaded connection with the internal thread of the metal insert 12 through the external thread.

As shown in fig. 3 and 6, the shutter 5 has a connecting structure 51 and a shutoff structure 52. The connecting structure 51 is provided with a threaded hole matched with the valve rod 3, and the shutter 5 is installed through the connecting structure 51 so as to be fixed at the bottom of the valve rod 3. The intercepting structure 52 is in the shape of a circular plate, circular grooves 521 are symmetrically formed on the circular surfaces on both sides of the intercepting structure 52 of the shutter 5, and the diameter of each circular groove 521 is smaller than the inner diameter of the lower cylindrical portion 122 of the metal insert 12. Referring to fig. 2 to 3, when a user operates the gate 5 to move upwards from the closed state shown in fig. 2 to open, and moves to the position B shown in fig. 3 through the circular groove 521, at the position B shown in fig. 3, the gate does not contact the metal insert 12, so that frictional resistance generated by contact between the gate and the metal insert is avoided, and the operation of opening the gate 5 is easier and more labor-saving; similarly, when referring to fig. 4 to 3, when the user operates the shutter 5 to move downward from the open state shown in fig. 4 to close, the operation process also achieves the effect of saving labor and effort.

Further, as shown in fig. 1, the outer circumferential wall of the hand wheel 2 is provided with a plurality of vertical protrusions 21, which facilitates grasping when operating the hand wheel.

The working principle of the PP-R pipeline gate valve of the embodiment is as follows: the gate valve is opened or closed by controlling the hand wheel 2 to rotate by a user, the hand wheel is controlled to rotate by the user, and the hand wheel 2 is connected with the first section 41 of the valve cover in a clamping manner, so that the valve cover 4 can be driven to rotate. Since the second section 42 of the bonnet and the valve stem 3 form a ball screw, the rotational movement of the bonnet 4 is converted into an axial linear movement of the valve stem, i.e. in the form of an upward or downward movement of the valve stem 3. The valve rod 3 moves upwards or downwards to drive the gate plate connected with the tail end to move upwards or downwards, the gate plate moves upwards to open the gate valve, and the gate plate moves downwards to close the gate valve. In the PP-R pipeline gate valve of this embodiment, the upper end of valve rod can not expose outside, is located the casing inside all the time (at the casing of hand wheel inside or at the casing of valve gap inside), has avoided exposing the problem of rust and corrosion, prolongs its life.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a PP-R pipeline gate valve, includes valve body, hand wheel, valve rod, valve gap, flashboard and sealing washer, the valve body comprises PP-R valve pipe and the metal insert of embedding in PP-R valve pipe inside, its characterized in that:

the metal insert is composed of an upper cylindrical part and a lower cylindrical part, the radial direction of the upper cylindrical part is the vertical direction, and the radial direction of the lower cylindrical part is the horizontal direction;

the valve cover is installed on the metal insert and is communicated up and down, the gate plate is connected to the lower end part of the valve rod, and the valve rod and the gate plate are located in a vertical channel formed by the metal insert and the valve cover;

the flashboard is provided with a connecting structure and a cut-off structure, the cut-off structure is in a circular plate shape, and the inner wall of the lower cylindrical part of the metal insert is provided with an annular clamping groove matched with the cut-off structure in shape;

the valve cover is divided into a first section, a second section, a third section, a fourth section and a fifth section from top to bottom according to different outer diameters,

the hand wheel is clamped and sleeved on the first section;

a ball nut structure is arranged inside the second section, the valve rod is a screw rod, and the valve rod and the ball nut structure form a ball screw;

a flashboard limiting bulge is formed on the inner wall of the third section;

an annular flange is formed on the outer wall of the fourth section, and the sealing ring is arranged between the annular flange and the metal insert;

the outer wall of the fifth section is provided with external threads, the upper end part of the upper cylindrical part is provided with internal threads, and the valve cover is in threaded connection with the internal threads of the metal insert through the external threads.

2. The PP-R pipe gate valve of claim 1, wherein:

the PP-R valve pipe is provided with an upper end portion which is vertically communicated and a lower pipe portion which is horizontally communicated, an upper cylindrical portion of the metal insert is correspondingly positioned in the upper end portion, a lower cylindrical portion of the metal insert is correspondingly positioned in the lower pipe portion, and the outer peripheral wall of the upper end portion is arranged to be prismatic.

3. The PP-R pipe gate valve of claim 1, wherein:

the outer wall of the upper cylindrical part of the metal insert is provided with an annular convex structure along the circumferential direction, and the section of the annular convex structure is in a crotch shape.

4. The PP-R pipe gate valve of claim 1, wherein:

the circular surfaces of the two sides of the closure structure of the flashboard are symmetrically provided with circular grooves, and the diameter of each circular groove is smaller than the inner diameter of the lower cylindrical part of the metal insert.

5. The PP-R pipe gate valve of claim 1, wherein:

the bottom of the hand wheel is provided with a clamping hole which is a rectangular hole or a triangular hole, and the outer wall of the first section of the valve cover is correspondingly arranged to be in a quadrangular prism shape or a triangular prism shape matched with the outer wall of the first section of the valve cover.

6. The PP-R pipe gate valve of claim 1, wherein:

the outer circumferential wall of the hand wheel is provided with a plurality of vertical protrusions.