Novel pneumatic normally-open pipe clamp valve

Abstract

The utility model discloses a novel pneumatic normally-open pipe clamp valve, which belongs to the technical field of pipe clamp valves and comprises a valve cylinder, a pipe seat, a pipe body and a fixed end cover, the valve cylinder comprises a cylinder body and connecting ends at two ends of the cylinder body, and mounting steps are arranged on the inner circumference of the connecting ends; an air inlet end and an exhaust end are formed in the side wall of the cylinder body; the pipe seats are correspondingly compressed and mounted in the mounting steps at the two ends of the cylinder body; two ends of the pipe body are correspondingly pressed on the outer side of the pipe seat, and a closed air cavity is formed between the outer side of the pipe body and the inner wall of the cylinder body; the pipe body is made of an elastic material, and a flow path is formed in the pipe body; the two fixed end covers are correspondingly connected to the connecting ends at the two ends of the cylinder body respectively, and the two ends of the pipe body are correspondingly clamped to the corresponding pipe bases. Driving gas is controlled to enter or exhaust through the gas inlet end or the gas exhaust end to control extrusion or extrusion release of the pipe body, so that the pipe body deforms to open or close the flow path. The utility model can conveniently and efficiently realize the sealing connection with the pipeline, and has the advantages of high response speed, few accessories, low manufacturing cost and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pipe clamp valve, especially to a novel pneumatic normally open pipe clamp valve. BACKGROUND

[0002] In modern industry and medical fields, precise control of fluid flow is an important technical requirement. As a kind of fluid control device, pinch valve is widely used in various systems to realize precise regulation of fluid flow state in pipeline. This technology relies on a movable actuator to drive a pressure head, which physically deforms the clamping conduit to change the fluid flow condition inside the conduit. This method allows fine control of fluid flow rate and is an indispensable part of many fluid transmission systems.

[0003] However, although the design of pinch valve has proved its efficiency and reliability in many applications, there are still some significant limitations and inconveniences in the prior art, especially in the connection between the driving rod and the pressure head of the pinch valve. Currently, screw connection is commonly used, which brings a series of problems. First of all, the disassembly and installation process of screw connection is complicated, which requires the use of special tools, which is particularly inconvenient in the case of quick replacement or maintenance of pinch valve. Frequent disassembly and assembly may cause thread wear, reducing the reliability of the connection. The main problems of the above-mentioned driving mode of pipe clamp valve are complex structure, complicated installation or operation process and high failure rate. SUMMARY

[0004] The technical problem solved by the utility model is to provide a novel pneumatic normally open pipe clamp valve, which can realize convenient and efficient sealing connection with the pipeline, has the advantages of fast response speed, few parts, low manufacturing cost, etc.

[0005] Technical scheme: The utility model discloses a novel pneumatic normally open pipe clamp valve, which comprises:

[0006] A valve cylinder comprises a cylinder body and connecting ends arranged at both ends of the cylinder body, and a mounting step is arranged on the inner periphery of the connecting end.

[0007] A pipe seat comprises two pipe seats, which are respectively arranged in the mounting step at both ends of the cylinder body.

[0008] A pipe body is arranged at both ends of the pipe seat, and a closed air cavity is formed between the outer side of the pipe body and the inner wall of the cylinder body.

[0009] A fixed end cover comprises two fixed end covers, which are respectively arranged on the connecting end at both ends of the cylinder body, and the two ends of the pipe body are clamped on the corresponding pipe seat.

[0010] By controlling the driving gas to enter or exit through the gas inlet end or the gas outlet end, the pipe body is extruded or extruded to be released, so that the pipe body is deformed to open or cut off the flow path.

[0011] Preferably, the pipe seat comprises a sealing ring body which is arranged in close contact with the inner ring of the cylinder body, and an outer end of the sealing ring body is integrally provided with a sealing end ring which is matched with the inner diameter of the mounting step, and an outer end face of the sealing end ring is provided with an annular clamping groove.

[0012] Preferably, the pipe body is integrally provided with a tension ring at both ends, and a top end of the tension ring is formed with a fixed turned edge, and the tension ring is correspondingly buckled on the outer side of the sealing end ring, and the fixed turned edge is correspondingly clamped in the annular clamping groove.

[0013] Preferably, a sealing ring is arranged at the connecting root of the sealing ring body and the sealing end ring.

[0014] Preferably, the fixed end cover comprises a cover plate which is matched with the shape of the connecting end, and the inner side of the cover plate is provided with a locking conical ring which is correspondingly supported in the inner periphery of the tension ring.

[0015] Preferably, a threaded end pipe is arranged at the outer end of the cover plate, and a screwing sleeve ring is connected to the threaded end pipe.

[0016] Preferably, a sealing ring sleeve is arranged between the screwing sleeve ring and the threaded end pipe, and the cross section of the sealing ring sleeve is triangular.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model can realize convenient sealing connection of the pipeline and the pipe clamp valve, adopts a normally open structure, and can realize communication or interruption of fluid in the pipe clamp valve through a pneumatic driving mode, and has the advantages of fast response speed, few accessories, low manufacturing cost and the like.

[0019] The utility model also has other beneficial effects which are stated in the embodiment part of the specification, and will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic view of the pipe clamp valve of the utility model;

[0021] Figure 2 It is Figure 1 It is a three-dimensional structure schematic view of the valve cylinder;

[0022] Figure 3 It is Figure 1 It is a three-dimensional structure schematic view of the fixed end cover;

[0023] Figure 4 It is Figure 1 It is an axial structure sectional view of the pipe clamp valve;

[0024] Figure 5 for Figure 4 A cross-sectional view of the valve cylinder along the axial structure;

[0025] Figure 6 for Figure 3 A sectional view of the axial structure of the fixed end cover;

[0026] Figure 7 for Figure 3 Axial structural cross-sectional view of the control unit.

[0027] Figure numerals: 100, pipe clamp valve; 1, valve cylinder; 11, cylinder body; 12, connecting end; 13, mounting step; 14, air inlet end; 15, exhaust end; 16, closed air cavity; 2, fixed end cover; 21, cover plate; 22, threaded end pipe; 23, locking cone ring; 3, tightening ring; 4, pipe seat; 41, sealing ring body; 42, sealing end ring; 43, annular groove; 5, pipe body; 51, tensioning ring; 52, fixed flange; 6, sealing ring sleeve; 7, sealing ring. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following Figures 1 to 7 The technical solutions of the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0029] like Figures 1 to 5 As shown in the figure, the present invention discloses a novel pneumatic normally open pinch valve. The pinch valve 100 comprises a valve cylinder 1, a pipe seat 4, a pipe body 5, and a fixed end cap 2. The valve cylinder 1 comprises a cylinder body 11 and connecting ends 12 disposed at either end of the cylinder body 11. The inner periphery of the connecting ends 12 is provided with mounting steps 13. An inlet port 14 and an exhaust port 15 are formed on the sidewall of the cylinder body 11, communicating with the inner cavity thereof. The inlet port 14 and the exhaust port 15 are used to control the pressure of the gas entering the cylinder body 11.

[0030] like Figure 4 and Figure 7 As shown, the pipe base 4 comprises two, one pressed against the other within the mounting steps 13 at each end of the cylinder body 11. Specifically, the pipe base 4 comprises a sealing ring 41, which is fitted snugly against the inner rim of the cylinder body 11. The outer end of the sealing ring 41 is integrally provided with a sealing end ring 42 that matches the inner diameter of the mounting step 13. The outer end surface of the sealing end ring 42 is provided with an annular groove 43. A sealing ring 7 is provided at the junction between the sealing ring 41 and the sealing end ring 42 to enhance the sealing performance between the pipe base 4 and the mounting step 13.

[0031] As Figure 4 shown, the pipe body 5 is tightly pressed on the outer side of the pipe base 4 at both ends, and a closed air cavity 16 is formed between the outer side of the pipe body 5 and the inner wall of the cylinder body 11; the pipe body 5 is made of elastic material and has a flow path formed inside, and the pipe body 5 can be deformed by expansion or contraction, and the driving gas is controlled to enter or exit through the air inlet end 14 or the air outlet end 15 to control the pipe body 5 to be pressed or unpressed, so that the pipe body 5 is deformed to open or cut off the flow path.

[0032] As Figure 7 shown, the pipe body 5 is integrally provided with a tension ring 51 at both ends, and the top end of the tension ring 51 is formed with a fixed turn-up 52, the tension ring 51 is correspondingly buckled on the outer side of the sealing end ring 42, and the fixed turn-up 52 is correspondingly clamped in the annular clamping groove 43. The fixed end cover 2 includes two, which are correspondingly connected to the connecting end 12 at both ends of the cylinder body 11, when the fixed end cover 2 is fixedly connected with the connecting end 12, the tension ring 51 is correspondingly buckled on the outer side of the sealing end ring 42, so that the pipe body 5 is correspondingly tensioned on the pipe base 4 at both ends.

[0033] As Figure 6 shown, the fixed end cover 2 includes a cover plate 21 which is shaped to match the connecting end 12, and the inner side of the cover plate 21 is provided with a locking taper ring 23, after the fixed end cover 2 is fixedly connected with the connecting end 12, the locking taper ring 23 is correspondingly supported in the inner wall of the tension ring 51, so as to realize the sealing connection of the fixed turn-up 52 and the sealing end ring 42 with the cylinder body 11.

[0034] As Figure 6 shown, the outer end of the cover plate 21 is provided with a threaded end pipe 22, and the threaded end pipe 22 is connected with a screwing sleeve 3, and a sealing ring sleeve 6 is arranged between the screwing sleeve 3 and the threaded end pipe 22, and the cross section of the sealing ring sleeve 6 is triangular structure, and the threaded end pipe 22 can be fixed or separated by rotating the screwing sleeve 3.

[0035] The working principle or working method of the utility model:

[0036] The pipe body 5 and the pipe base 4 are assembled, then the pipe base 4 is correspondingly installed in the installation step 13, and the two fixed end covers 2 are correspondingly connected at both ends of the valve cylinder 1, so as to realize the sealing connection of the pipe body 5, the pipe base 4 and the valve cylinder 1. The sealing ring sleeve 6 and the screwing sleeve 3 are respectively sleeved on one end of the pipeline, the pipeline is correspondingly inserted into the threaded end pipe 22, then the screwing sleeve 3 is screwed on the threaded end pipe 22, and the sealing ring sleeve is correspondingly pressed on the inlet end of the threaded end pipe 22 to realize the sealing of the connection of the pipeline. The utility model can realize the convenient sealing connection of the pipeline and the pipe clamp valve; the normally open structure is adopted, the communication or cut-off of the fluid in the pipe clamp valve can be realized by the pneumatic driving mode, and the utility model has the advantages of fast response speed, few accessories, low manufacturing cost and the like.

[0037] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, under the premise that a number of improvements and refinements can be made, these improvements and refinements should also be considered as the scope of protection of the present application.

Claims

1. A new type of pneumatically operated normally open tube clamp valve, characterized in that, The pipe clamp valve (100) comprises: A valve cylinder (1) comprising a cylinder body (11) and connecting ends (12) arranged at both ends of the cylinder body (11), and a mounting step (13) arranged on the inner periphery of the connecting end (12); the side wall of the cylinder body (11) is provided with an air inlet end (14) and an air outlet end (15) communicating with the inner cavity thereof; A pipe seat (4) comprising two pipe seats (4) respectively corresponding to the mounting steps (13) at both ends of the cylinder body (11); A pipe body (5) corresponding to the pipe seat (4) on the outer side of the pipe seat (4), and a closed air chamber (16) is formed between the outer side of the pipe body (5) and the inner wall of the cylinder body (11); the pipe body (5) is made of elastic material, and a flow path is formed in the pipe body (5); A fixed end cover (2) comprising two fixed end covers (2) respectively corresponding to the connecting ends (12) at both ends of the cylinder body (11), and the pipe body (5) is correspondingly clamped on the corresponding pipe seat (4); The driving gas is controlled to enter or exit through the air inlet end (14) or the air outlet end (15) to control the extrusion or extrusion release of the pipe body (5), so that the pipe body (5) is deformed to open or cut off the flow path.

2. The novel aerodynamic normally open tube clamp valve according to claim 1, characterized in that, The pipe seat (4) comprises a sealing ring body (41) arranged in the inner ring of the cylinder body (11), an outer end of the sealing ring body (41) is integrally provided with a sealing end ring (42) matched with the inner diameter of the mounting step (13), and an outer end face of the sealing end ring (42) is provided with an annular clamping groove (43).

3. The novel aerodynamic normally open tube clamp valve of claim 2, wherein, Both ends of the pipe body (5) are integrally provided with a tension ring (51), the top end of the tension ring (51) forms a fixed turn-up edge (52), the tension ring (51) is correspondingly buckled on the outer side of the sealing end ring (42), and the fixed turn-up edge (52) is correspondingly clamped in the annular clamping groove (43).

4. The novel aerodynamic normally open tube clamp valve of claim 2, wherein, The sealing ring body (41) and the sealing end ring (42) are provided with a sealing ring (7) at the connecting root portion.

5. The novel aerodynamic normally open tube clamp valve according to claim 3, wherein, The fixed end cover (2) comprises a cover plate (21) matched with the shape of the connecting end (12), the inner side of the cover plate (21) is provided with a locking conical ring (23), and the locking conical ring (23) is correspondingly supported on the inner periphery of the tension ring (51).

6. The novel aerodynamic normally open tube clamp valve of claim 5, wherein, The outer end of the cover plate (21) is provided with a threaded end pipe (22), and the threaded end pipe (22) is connected with a screwing sleeve ring (3).

7. The novel aerodynamic normally open tube clamp valve of claim 6, wherein, A sealing ring sleeve (6) is arranged between the screwing sleeve ring (3) and the threaded end pipe (22), and the cross section of the sealing ring sleeve (6) is triangular.

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