A new type of pipe clamp valve

Abstract

The present invention relates to the field of valve technology, and specifically to a pipe clamp valve, which comprises: a lower valve body, an upper valve body, a clamping mechanism, a resisting column, and a hose. The lower valve body is a rectangular shell mechanism, and has a semi-annular limiting groove along the center position inside. There are semi-annular supporting grooves with a certain length concentric with the semi-annular limiting groove and inside the left and right sides of the lower valve body, and limiting grooves are also provided at the left and right end surfaces of the lower valve body. A limiting hole is provided at the middle position of the top of the upper valve body, and two arc grooves are symmetrically arranged with a certain length on the left and right sides of the upper valve body and concentric with the semi-annular limiting groove of the lower valve body. The present invention has a trapezoidal cross-sectional area in the middle of the hose whose height is higher than the circular cross-sectional area, so that when the trapezoidal cross-sectional area is squeezed, the whole will be deformed by concavity instead of being deformed by excessive stretching, so that the elastic stretching deformation of the hose during squeezing can be greatly reduced, thereby improving the service life of the hose.

Description

Technical Field

[0001] The invention relates to the field of pipe clamp valves, and in particular to a novel pipe clamp valve. Background Art

[0002] The pinch valve is also known as the pipe pinch valve, airbag valve, and pinch valve in China. The sleeve is the most important part of any pinch valve and the core of the pinch valve. It provides corrosion resistance, wear resistance and pressure bearing capacity. The quality of the pinch valve depends on the quality of the sleeve. The sleeve is squeezed by pneumatic, electric, manual or hydraulic driving methods to achieve the function of switching / regulation. The rubber sleeve of the pipe valve is the core component and is usually composed of an inner layer, an outer layer and a reinforcing fiber.

[0003] The invention patent "CN103542128B" published in China is a pneumatic pipe clamp valve, which describes a structure in which an upper pressure rod and a lower pressure rod are pushed by a cylinder to move relative to each other to squeeze the hose to achieve closure;

[0004] It uses two cylinders to push the upper piston and the lower piston to move downward and upward respectively, driving the small valve stem to descend and the large valve stem to rise, so that the upper pressure rod and the lower pressure rod can move relative to each other, clamping the sleeve and closing the valve. However, this design has the following disadvantages:

[0005] 1. The upper and lower pressure rods squeeze the hose at the same time, causing the hose to be stretched and deformed greatly. Repeated use over a long period of time will cause elastic fatigue of the hose and reduce its lifespan.

[0006] 2. Pneumatically driven extrusion cannot achieve a long-term closing effect, and leakage is likely to occur over a long period of time;

[0007] Therefore, the prior art / design is flawed. Summary of the invention

[0008] Therefore, the present invention is made in view of the above problems. The purpose of the present invention is to use two annular push rods to fit with the resisting column, so that the annular push rods move relatively under the action of the lead screw to squeeze the hose onto the resisting column, thereby achieving closure, so as to solve the problem that the traditional pipe clamp valve is not closed tightly and the push rod causes great damage to the hose when closing and opening. The present invention achieves the above purpose through the following technical solutions:

[0009] A novel pipe clamp valve, comprising a lower valve body, an upper valve body, a clamping mechanism, a stop column, and a hose. The lower valve body is a rectangular shell mechanism, with a semi-circular limiting notch at the center position inside, and semi-circular supporting notches with a certain length inside the semi-circular limiting notch are provided on the left and right sides of the lower valve body, and limiting grooves are provided at the left and right end surfaces of the lower valve body. A limiting hole is provided at the middle position of the top of the upper valve body, and two arc-shaped notches with a certain length are provided on the left and right sides of the upper valve body and are concentric with the semi-circular limiting notch of the lower valve body and are symmetrically arranged.

[0010] The clamping mechanism comprises: a rotating wheel disc, a transmission rod, a bevel gear 1, a bevel gear 2, a lead screw, and an annular push rod. The transmission rod is rotatably installed in the limiting hole at the top of the upper valve body, the upper end of which is fixedly installed with a rotating wheel disc, and the lower end is installed with a bevel gear 1. The annular push rod is composed of two semi-annular limiting notches and semi-annular supporting notches of the lower valve body, which are respectively installed on the left and right sides of the lower valve body and can be moved. A lead screw is installed between the two annular push rods at the upper end of an annular push rod, and the left and right ends of the lead screw have opposite threads. The middle position of the lead screw has no threads and is fixedly installed with a bevel gear 2, which is meshed and connected with the bevel gear 1 at the lower end of the transmission rod.

[0011] The hose is a rubber tube with cylindrical cross-sections at both ends and a trapezoidal cross-section in the middle. It is installed as a whole in the semi-annular limiting notch on the lower valve body, and its two ends are supported by the semi-annular supporting notches. The resisting column is composed of a supporting truncated cone and a fixed ring body, and is installed as a whole inside the hose. The right end of the supporting truncated cone is fixedly installed on the fixed ring body, and the fixed ring body is positioned and installed in the limiting groove at the right end of the lower valve body. When the upper valve body and the lower valve body are buckled, the upper and lower limiting grooves will limit and fix the fixed ring body so that it cannot move.

[0012] The annular push rod includes: a moving body, a fixed column, a rolling body, and a limiting ring. The moving body has limiting ears symmetrically arranged along the circumference, and has symmetrically arranged positioning holes on its right end surface at the same horizontal position as the limiting ears. A connecting boss is provided at the center position of the circumferential surface perpendicular to the limiting ears, and a threaded hole is opened at the center of the connecting boss. The threaded hole is threadedly connected to the lead screw. The rolling body is composed of a plurality of small rolling units that are rotatably inserted in the limiting ring in sequence. The outer surface of each rolling unit is an arc-shaped surface that can fully fit the outer surface of the hose. The interior of each rolling unit is a rigid material with a layer of rubber inlaid on the outer surface. The outer layer of rubber can produce a larger The friction force is used to ensure the effective rolling of the rolling unit. There is an arc-shaped circular hole inside. In order to ensure that each rolling unit can roll relatively on the circumferential surface of the limit ring when subjected to force, the diameter of the arc-shaped circular hole of each rolling unit is slightly larger than the diameter of the limit ring. The two fixed columns are symmetrically fixed on the circumference of the limit ring, and the other end is inserted and fixed in the positioning hole on the moving body. The annular push rod is movably installed as a whole between the semi-annular limit groove and the semi-annular support groove of the lower valve body. The limit ear on the moving body is limited between the end face of the semi-annular limit groove of the lower valve body and the end face of the arc-shaped groove on the upper valve body, and cannot rotate. When the screw rotates, the left and right moving bodies will approach or move away from each other.

[0013] Beneficial effects of the present invention:

[0014] 1. An annular push rod is set and sleeved on the hose. The annular push rod only moves axially to squeeze the inner circumferential surface of the trapezoidal cross-section area of ​​the hose onto the outer circumferential surface of the resisting column inside it, so that the opening is closed. Such a circumferential sleeve has a better closing effect and is not prone to leakage when closed for a long time;

[0015] 2. The middle of the hose has a trapezoidal cross-section area that is higher than the circular cross-section, so that when the trapezoidal cross-section area is squeezed, the entire area will be deformed by concavity rather than by excessive stretching. Therefore, the elastic stretching deformation of the hose during squeezing can be greatly reduced, thereby increasing the service life of the hose;

[0016] 3. There is a rolling body on the annular push rod. When the rolling body of the annular push rod contacts the trapezoidal cross-sectional area on the hose, as the annular push rods continue to approach each other, the rolling body will roll relatively on the circumferential surface of the limit ring, thereby greatly reducing the wear on the hose during the mobile extrusion process and increasing the service life of the hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a schematic diagram of the overall structure of a novel pipe clamp valve of the present invention.

[0018] Figure 2 The figure is a partial cross-sectional structural schematic diagram of the entire valve body of a novel pipe clamp valve of the present invention.

[0019] Figure 3 The figure is a side cross-sectional view of a novel pipe clamp valve of the present invention in an open state.

[0020] Figure 4 This is a front cross-sectional view of a novel pipe clamp valve of the present invention in an open state.

[0021] Figure 5 This is a schematic diagram of the partial exploded structure of a novel pipe clamp valve of the present invention with the upper valve body removed.

[0022] Figure 6 The figure is an exploded schematic diagram of an annular push rod in a novel pipe clamp valve of the present invention.

[0023] Figure 7 This is a front cross-sectional view of a novel pipe clamp valve of the present invention in a closed state.

[0024] Description of the figure number:

[0025] 100, lower valve body; 101, semi-annular limiting notch; 102, semi-annular supporting notch; 103, limiting groove; 110, upper valve body; 111, limiting hole; 112, arc-shaped notch; 120, clamping mechanism; 121, rotating wheel; 122, transmission rod; 123, bevel gear one; 124, bevel gear two; 125, lead screw; 126, annular push rod; 126a, moving body; 126aa, limiting ear; 126ab, connecting boss; 126ac, threaded hole; 126ad, positioning hole; 126b, fixing column; 126c, rolling body; 126ca, rolling unit; 126d, limiting ring; 130, resisting column; 131, supporting cone; 132, fixing ring body; 140, hose. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can be implemented in various forms, so the present invention is not limited to the embodiments described below. In addition, in order to more clearly describe the present invention, components that are not connected with the invention will be omitted from the drawings.

[0027] like Figure 1 As shown, a novel pipe clamp valve comprises: a lower valve body 100, an upper valve body 110, a clamping mechanism 120, a resisting column 130, and a hose 140;

[0028] like Figure 2 , 3 As shown, the lower valve body 100 is a rectangular shell structure, with a semi-circular limiting notch 101 at the center position inside, and semi-circular supporting notches 102 with a certain length inside the semi-circular limiting notch 101 are provided on the left and right sides of the lower valve body 100, and limiting grooves 103 are also provided at the left and right end surfaces of the lower valve body 100, and a limiting hole 111 is provided at the middle position of the top of the upper valve body 110, and two arc-shaped notches 112 with a certain length and symmetrically arranged on the left and right sides of the upper valve body 110 and concentric with the semi-circular limiting notch 101 of the lower valve body 100;

[0029] like Figure 4 , 5As shown, the clamping mechanism 120 includes: a rotating wheel disc 121, a transmission rod 122, a bevel gear 123, a bevel gear 124, a lead screw 125, and an annular push rod 126. The transmission rod 122 is rotatably installed in the limiting hole 111 at the top of the upper valve body 110, and the rotating wheel disc 121 is fixedly installed on the upper end thereof, and the bevel gear 123 is installed on the lower end. The annular push rod 126 is two semi-annular limiting notches 101 and semi-annular supporting notches 102 of the lower valve body 100, which are respectively installed on the left and right sides of the lower valve body 100 and can be movably installed. A lead screw 125 is installed between the two annular push rods 126 at the upper end of an annular push rod 126, and the left and right ends of the lead screw 125 have opposite threads. The middle position of the lead screw 125 has no threads and is fixedly installed with a bevel gear 124, and the bevel gear 124 is meshed and connected with the bevel gear 123 at the lower end of the transmission rod 122.

[0030] The hose 140 is a rubber tube with cylindrical cross-sections at both ends and a trapezoidal cross-section in the middle, which is installed in the semi-annular limiting notch 101 on the lower valve body 100 as a whole, and supported by the semi-annular supporting notch 102 at both ends;

[0031] The blocking column 130 is composed of a supporting truncated cone 131 and a fixing ring 132, and is integrally installed inside the hose 140. The right end of the supporting truncated cone 131 is fixedly installed on the fixing ring 132, and the fixing ring 132 is positioned and installed in the limiting groove 103 at the right end of the lower valve body 100. When the upper valve body 110 and the lower valve body 100 are buckled, the upper and lower limiting grooves 103 will limit and fix the fixing ring 132 so that it cannot move.

[0032] like Figure 5 , 6As shown, the annular push rod 126 comprises: a moving body 126a, a fixed column 126b, a rolling body 126c, and a limiting ring 126d. The moving body 126a has limiting ears 126aa symmetrically arranged along the circumference, and has symmetrically arranged positioning holes 126ad on its right end surface at the same horizontal position as the limiting ears 126aa. A connecting boss 126ab is provided at the center position of the circumferential surface perpendicular to the limiting ears 126aa. A threaded hole 126ac is opened at the center of the connecting boss 126ab, and the threaded hole 126ac is threadedly connected to the lead screw 125. The rolling body 126c is composed of a plurality of small rolling units 126ca rotatably inserted in turn on the limiting ring 126d. The outer surface of each rolling unit 126ca is an arc-shaped surface that can fully fit the outer surface of the hose 140. The interior of each rolling unit 126ca is a rigid material and the outer surface is inlaid with a layer of rubber. The outer layer of rubber can fit the soft The tube 140 generates a greater friction force to ensure the effective rolling of the rolling unit 126ca. It has an arc-shaped circular hole inside. In order to ensure that each rolling unit 126ca can roll relatively on the circumferential surface of the limiting ring 126d when subjected to force, the diameter of the arc-shaped circular hole of each rolling unit 126ca is slightly larger than the diameter of the limiting ring 126d. The fixed column 126b consists of two fixed columns symmetrically on the circumference of the limiting ring 126d, and the other end is inserted and fixed in the positioning hole 126ad on the moving body 126a. The annular push rod 126 is movably installed as a whole between the semi-annular limiting groove 101 and the semi-annular supporting groove 102 of the lower valve body 100. The limiting ear 126aa on the moving body 126a is limited between the end face of the semi-annular limiting groove 101 of the lower valve body 100 and the end face of the arc-shaped groove 112 on the upper valve body 110, and cannot rotate. When the screw 125 rotates, the left and right moving bodies 126a will approach or move away from each other.

[0033] Working principle of the present invention:

[0034] When the pipe clamp valve needs to be closed, the rotating wheel 121 is manually rotated, and the bevel gear 123 at the lower end of the transmission rod 122 is meshed with the bevel gear 2 124 to rotate the screw 125. Since the screw 125 is threadedly connected to the annular push rods 126 on both sides, and the two ends of the screw 125 are reversely threaded, the annular push rods 126 will move closer to each other. When the rolling bodies 126c on the annular push rods 126 contact the trapezoidal cross-sectional area on the hose 140, as the annular push rods 126 continue to approach each other, the rolling bodies 126c roll relatively on the circumferential surface of the limit ring 126d, and the hose 140 will be squeezed inwardly and contracted. When the rolling bodies 126c on the annular push rods 126 on both sides contact each other, the rotating wheel 121 is stopped. At this time, the inner circumferential surface of the hose 140 is squeezed onto the outer circumferential surface of the stop column 130 installed inside the hose 140, the opening is closed, and the closing action is completed. The closed state is as shown in FIG. Figure 7As shown, when it is necessary to open, the rotating wheel 121 is rotated in the opposite direction, and the annular push rods 126 are moved away from each other. When the annular push rods 126 withdraw to the circular cross section of the hose 140, the rotating wheel 121 is stopped, and the hose 140 recovers its shape under the pressure of the internal fluid, and the opening is opened to complete the opening action. The opening state is shown in FIG. Figure 4 shown.

Claims

1. A new type of pipe clamp valve, comprising: A lower valve body (100), an upper valve body (110), a clamping mechanism (120), a blocking column (130), and a hose (140); the characteristics are as follows: the lower valve body (100) is a rectangular shell mechanism, the lower valve body (100) has a semi-annular limiting notch (101) along the center position inside, semi-annular supporting notches (102) are provided on both sides of the lower valve body (100), and limiting grooves (103) are also provided on the left and right end surfaces of the lower valve body (100), and a limiting hole (111) is provided at the middle position of the top of the upper valve body (110) The upper valve body (110) has arc-shaped notches (112) symmetrically arranged on the left and right sides. The clamping mechanism (120) includes: a rotating wheel (121), a transmission rod (122), a bevel gear 1 (123), a bevel gear 2 (124), a lead screw (125), and an annular push rod (126). The transmission rod (122) is rotatably mounted in the limiting hole (111). The upper end of the transmission rod (122) is fixedly mounted with the rotating wheel (121), the lower end of the transmission rod (122) is mounted with the bevel gear 1 (123), and the annular push rod (126) is fixedly mounted with the rotating wheel (121). 6) are two, respectively arranged on the left and right sides of the lower valve body (100), a lead screw (125) is installed between the two annular push rods (126), and the left and right ends of the lead screw (125) have opposite threads, the middle position of the lead screw (125) is not threaded and is fixedly installed with a bevel gear 2 (124), the two ends of the hose (140) are cylindrical cross-sections, and the middle is a rubber tube with a trapezoidal cross-section, the hose (140) is installed on the semi-annular limit groove (101), and the blocking column (130) is composed of a supporting truncated table (131) and a fixed ring body (132) The annular push rod (126) is integrally mounted inside the hose (140), and comprises: a moving body (126a), a fixing column (126b), a rolling body (126c), and a limiting ring (126d). The moving body (126a) has limiting ears (126aa) symmetrically arranged along the circumference, and has symmetrically arranged positioning holes (126ad) at the same horizontal position as the limiting ears (126aa) on its right end surface, and has a connecting boss (126ab) at the center position of the circumferential surface in a direction perpendicular to the limiting ears (126aa).A threaded hole (126ac) is formed at the center of the connecting boss (126ab), and the threaded hole (126ac) is threadedly connected to the lead screw (125). The rolling body (126c) is composed of a plurality of small rolling units (126ca) which are rotatably inserted in sequence on the limiting ring (126d). There are two fixed columns (126b), which are symmetrically fixed on the circumference of the limiting ring (126d) and the other ends are inserted and fixed in the positioning holes (126ad) on the moving body (126a). The annular push rod (126) is movably installed as a whole between the semi-annular limiting groove (101) and the semi-annular supporting groove (102). 02), the limiting ear (126aa) on the moving body (126a) is limited between the end surface of the semi-circular limiting notch (101) of the lower valve body (100) and the end surface of the arc-shaped notch (112) on the upper valve body (110), the right end of the supporting truncated table (131) is fixedly mounted on the fixed ring body (132), and the fixed ring body (132) is positioned and mounted in the limiting groove (103) at the right end of the lower valve body (100). When the pipe clamp valve needs to be closed, the rotating wheel (121) is manually rotated, and the bevel gear 1 (123) at the lower end of the transmission rod (122) is meshed and connected with the bevel gear 2 (124). The lead screw (125) is rotated. Since the lead screw (125) is threadedly connected to the annular push rods (126) on both sides, and the two ends of the lead screw (125) are reversely threaded, the annular push rods (126) will move closer to each other. When the rolling bodies (126c) on the annular push rods (126) contact the trapezoidal cross-sectional area on the hose (140), as the annular push rods (126) continue to approach each other, the rolling bodies (126c) roll relatively on the circumferential surface of the limit ring (126d), and the hose (140) will be squeezed inwardly and contracted. When the rolling bodies (126c) on the annular push rods (126) on both sides contact the trapezoidal cross-sectional area on the hose (140), the hose (140) will be squeezed inwardly and contracted. When the annular push rods (126) and the annular push rods (126c) are in contact with each other, the rotating wheel (121) is stopped, and the inner circumferential surface of the hose (140) is pressed against the outer circumferential surface of the stop column (130) installed inside the hose (140), and the opening is closed, thereby completing the closing action. When it is necessary to open, the rotating wheel (121) is rotated in the opposite direction, and the annular push rods (126) are moved away from each other. When the annular push rods (126) are withdrawn to the circular cross-section of the hose (140), the rotating wheel (121) is stopped, and the hose (140) recovers its shape under the pressure of the internal fluid, and the opening is opened, thereby completing the opening action.

2. A new type of pipe clamp valve according to claim 1, characterized in that: The semi-annular support notch (102) and the arc-shaped notch (112) are all arranged concentrically with the semi-annular limiting notch (101), and the limiting notch (103) is connected to one end of the semi-annular support notch (102).

3. A novel pipe clamp valve according to claim 1, characterized in that: The bevel gear 1 (123) and the bevel gear 2 (124) are vertically arranged and meshed with each other.

4. A novel pipe clamp valve according to claim 1, characterized in that: The outer surface of each rolling unit (126ca) is an arc-shaped surface, and the interior of each rolling unit (126ca) is a rigid material with a layer of rubber inlaid on the outer surface, and has an arc-shaped circular hole inside, the diameter of the arc-shaped circular hole being greater than the diameter of the limiting ring (126d).

Images