Pinch valve sleeve structure with damage self-checking function

Abstract

The utility model discloses a pinch valve sleeve structure with a damage self-checking function. The pinch valve sleeve structure comprises a valve sleeve body, a metal wire I, a metal wire II, a metal wire III, a metal wire IV, a metal wire V and a self-checking assembly. A hollow valve sleeve body is coaxially arranged in a valve body which is horizontally and transversely arranged in a sleeved mode, the two ends of the valve sleeve body vertically extend out of the corresponding end faces of the valve body, and a metal wire I, a metal wire II, a metal wire III, a metal wire IV and a metal wire V are sequentially arranged on a rubber layer of the valve sleeve body from inside to outside at intervals. The metal wire I, the metal wire II, the metal wire III, the metal wire IV and the metal wire V are spirally arranged in the circumferential direction of the valve sleeve body, and the two ends of the metal wire I, the metal wire II, the metal wire III, the metal wire IV and the metal wire V are connected with the self-checking assembly. Therefore, whether the corresponding layer of the valve sleeve body is damaged is judged. The device plays a role in preventive maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of pinch valves, in particular to a pinch valve sleeve structure with a damage self-detection function. Background Art

[0002] Pinch valves utilize pneumatic, electric, manual, or hydraulic actuators to squeeze the valve sleeve, achieving either a switching or regulating function. In the open position, the valve is fully open, with no flow restriction. When closed, the actuator activates the clamping mechanism, pressing the sleeve against the centerline to shut off the flow. Even if solid debris accumulates on the sleeve wall, the compression of the sleeve dislodges any crystals and carries them away with the fluid, achieving a hermetic seal.

[0003] The valve sleeve in the pinch valve is a wearing part and can be damaged in the following ways: 1) Wear: When the pinch valve is used to convey a medium containing solid particles, the particles will continuously impact the inner wall of the valve sleeve during the flow process, which will cause wear of the inner wall of the valve sleeve over a long period of time. For example, in mining, metallurgy and other industries, the conveyed slurry, tailings and other media contain a large amount of hard particles, which will accelerate the wear of the valve sleeve. In addition, the valve sleeve will also produce friction with the medium during frequent opening and closing, especially in high-speed flowing media, where the friction effect is more obvious, causing wear. 2) Tear: If there is excessive pressure fluctuation in the pipeline system, the valve sleeve may be subjected to pressure beyond its bearing capacity, resulting in tearing of the valve sleeve. For example, at the moment of starting or stopping the pump, the pressure in the pipeline changes. Severe, which may cause impact on the valve sleeve; 3) Corrosion: When the pinch valve is used to transport corrosive media, such as acid, alkali, salt solution, etc., the valve sleeve will be corroded; different corrosive media have different degrees of corrosion on the valve sleeve. For example, strong acid and strong alkali media will have a strong corrosive effect on the valve sleeve; even in some seemingly mild media, if it contains trace amounts of corrosive components, long-term accumulation will also cause corrosion to the valve sleeve; for example, some industrial water may contain trace amounts of chloride ions, which will corrode the valve sleeve; 4) Fatigue damage: During the long-term and frequent opening and closing process of the pinch valve, the valve sleeve will be constantly squeezed and relaxed. This repeated stress will cause fatigue damage to the valve sleeve; as the use time increases, the fatigue cracks will gradually expand, eventually leading to valve sleeve failure.

[0004] However, since the valve sleeve is installed inside the valve body, its damage cannot be observed. Generally, it is not discovered until the valve sleeve is damaged and leaks occur, which can easily cause losses to equipment and production. Therefore, how to detect valve sleeve damage in a timely manner has become a problem that needs to be solved urgently. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a pinch valve sleeve structure with a damage self-detection function, which is reasonably designed, simple and convenient, and can indirectly judge the amount of wear of the valve sleeve body through the on-off of the circuit and the indication of the light bulb and the buzzer, thereby playing a role in preventive maintenance, reducing the impact on production, and reducing the additional labor intensity of the operator caused by the accident.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: the present invention is a pinch valve sleeve structure with a damage self-detection function, the innovation of which is that it comprises a valve sleeve body, metal wire I, metal wire II, metal wire III, metal wire IV, metal wire V and a self-detection component; a hollow valve sleeve body is coaxially sleeved inside a horizontally arranged valve body, the left and right ends of the valve sleeve body vertically extend out of the corresponding end faces of the valve body, and extrusion blocks are symmetrically provided at the middle position inside the valve body relative to the upper and lower sides of the valve sleeve body, and the valve sleeve body is pressed tightly on the center line through the telescopic action of the extrusion blocks. On the rubber layer of the valve sleeve body, the opening and closing of the valve sleeve body are realized; a metal wire I, a metal wire II, a metal wire III, a metal wire IV and a metal wire V are arranged in parallel in sequence from the inside to the outside, and the metal wire I, the metal wire II, the metal wire III, the metal wire IV and the metal wire V are respectively arranged coaxially in a spiral shape along the circumferential direction of the valve sleeve body, and both ends of the metal wires are connected to the self-test component, and then the self-test component detects whether the corresponding metal wire I, the metal wire II, the metal wire III, the metal wire IV and the metal wire V are broken, so as to judge whether the corresponding layer of the valve sleeve body is damaged.

[0007] Preferably, the metal wire I, metal wire II, metal wire III, metal wire IV and metal wire V all extend coaxially from the left side of the valve sleeve body to the right side of the valve sleeve body, and then coaxially spiral back to the left side of the valve sleeve body, and it is necessary to ensure that the metal wire I, metal wire II, metal wire III, metal wire IV and metal wire V do not contact each other, and it is necessary to ensure that the metal wire I, metal wire II, metal wire III, metal wire IV and metal wire V each form a path.

[0008] Preferably, the metal wires I, II, III, IV and V are arranged at equal intervals, and the metal wires I and II, II and III, III and IV, and IV and V are separated by rubber, thereby ensuring that each layer of metal wires forms a path.

[0009] Preferably, the self-test component includes a fuse FU1, a relay KA1, a first switch and a light bulb I; the two ends of the metal wire I extend vertically upward from the top of the valve sleeve body relative to the left side of the valve body, and one end thereof is connected to the positive pole of the power supply through the fuse FU1, and the other end thereof is connected to the negative pole of the power supply through the relay KA1, thereby forming a path; one end of the light bulb I is connected to the positive pole of the power supply through the first switch, and the other end thereof is connected to the negative pole of the power supply, thereby forming another path; the first switch is electrically connected to the first contact of the relay KA1, and when the relay KA1 is energized, the first switch is normally open, and when the relay KA1 is de-energized, the first switch is normally closed, and then whether the metal wire I is broken is judged by whether the light bulb I is always on, and whether the valve sleeve body is worn to the layer where the metal wire I is located is judged.

[0010] Preferably, it also includes a fuse FU2, a relay KA2, a second switch and a light bulb II; the two ends of the metal wire II respectively extend vertically upward from the top of the valve sleeve body relative to the left side of the valve body, and one end thereof is connected to the positive pole of the power supply through the fuse FU2, and the other end thereof is connected to the negative pole of the power supply through the relay KA2, thereby forming a path; one end of the light bulb II is connected to the positive pole of the power supply through the second switch, and the other end thereof is connected to the negative pole of the power supply, thereby forming another path; the second switch is electrically connected to the first contact of the relay KA2, and when the relay KA2 is energized, the second switch is normally open, and when the relay KA2 is de-energized, the second switch is normally closed, and then whether the metal wire II is broken is judged by whether the light bulb II is always on, and whether the valve sleeve body is worn to the layer where the metal wire II is located is judged.

[0011] Preferably, it also includes a fuse FU3, a relay KA3, a third switch and a bulb III; the two ends of the metal wire III respectively extend vertically upward from the top of the valve sleeve body relative to the left side of the valve body, and one end thereof is connected to the positive pole of the power supply through the fuse FU3, and the other end thereof is connected to the negative pole of the power supply through the relay KA3, thereby forming a path; one end of the bulb III is connected to the positive pole of the power supply through the third switch, and the other end thereof is connected to the negative pole of the power supply, thereby forming another path; the third switch is electrically connected to the first contact of the relay KA3, and when the relay KA3 is energized, the third switch is normally open, and when the relay KA3 is de-energized, the third switch is normally closed, and then whether the metal wire III is broken is judged by whether the bulb III is always on, and whether the valve sleeve body is worn to the layer where the metal wire III is located is judged.

[0012] Preferably, it also includes a fuse FU4, a relay KA4, a fourth switch and a light bulb IV; the two ends of the metal wire IV respectively extend vertically upward from the top of the valve sleeve body relative to the left side of the valve body, and one end thereof is connected to the positive pole of the power supply through the fuse FU4, and the other end thereof is connected to the negative pole of the power supply through the relay KA4, thereby forming a passage; one end of the light bulb IV is connected to the positive pole of the power supply through the fourth switch, and the other end thereof is connected to the negative pole of the power supply, thereby forming another passage; the fourth switch is electrically connected to the first contact of the relay KA4, and when the relay KA4 is energized, the fourth switch is normally open, and when the relay KA4 is de-energized, the fourth switch is normally closed, and then whether the light bulb IV is always on can be used to judge whether the metal wire IV is broken, and whether the valve sleeve body is worn to the layer where the metal wire IV is located.

[0013] Preferably, it also includes a fuse FU5, a relay KA5, a fifth switch and a light bulb V; the two ends of the metal wire V respectively extend vertically upward from the top of the valve sleeve body relative to the left side of the valve body, and one end thereof is connected to the positive pole of the power supply through the fuse FU5, and the other end thereof is connected to the negative pole of the power supply through the relay KA5, thereby forming a passage; one end of the light bulb V is connected to the positive pole of the power supply through the fifth switch, and the other end thereof is connected to the negative pole of the power supply, thereby forming another passage; the fifth switch is electrically connected to the first contact of the relay KA5, and when the relay KA5 is energized, the fifth switch is normally open, and when the relay KA5 is de-energized, the fifth switch is normally closed, and then whether the light bulb V is always on can be used to judge whether the metal wire V is broken, and whether the valve sleeve body is worn to the layer where the metal wire V is located.

[0014] Preferably, the device further comprises a sixth switch, a seventh switch, an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch and a buzzer; one end of the sixth switch is connected to the positive electrode of the power supply, and the other end thereof is connected to one end of the ninth switch via the seventh switch and the eighth switch in sequence; one end of the tenth switch is connected to the positive electrode of the power supply, and the other end thereof is connected to one end of the thirteenth switch via the eleventh switch and the twelfth switch in sequence; one end of the fourteenth switch is connected to the positive electrode of the power supply, and the other end thereof is connected to one end of the seventeenth switch via the fifteenth switch and the sixteenth switch in sequence; the other ends of the ninth switch, the thirteenth switch and the seventeenth switch are respectively connected to one end of the buzzer, and the other end of the buzzer is connected to the negative electrode of the power supply;

[0015] The sixth switch and the fourteenth switch are electrically connected to the second contact of the relay KA1, respectively. When the relay KA1 is energized, the sixth switch and the fourteenth switch are normally open. When the relay KA1 is de-energized, the sixth switch and the fourteenth switch are normally closed.

[0016] The seventh switch, the thirteenth switch, and the fifteenth switch are electrically connected to the second contact of the relay KA2, respectively. When the relay KA2 is energized, the seventh switch, the thirteenth switch, and the fifteenth switch are normally open. When the relay KA2 is de-energized, the seventh switch, the thirteenth switch, and the fifteenth switch are normally closed.

[0017] The eighth switch and the twelfth switch are electrically connected to the second contact of the relay KA3, respectively. When the relay KA3 is energized, the eighth switch and the twelfth switch are normally open. When the relay KA3 is de-energized, the eighth switch and the twelfth switch are normally closed.

[0018] The ninth switch, the eleventh switch, and the sixteenth switch are electrically connected to the second contact of the relay KA4, respectively. When the relay KA4 is energized, the ninth switch, the eleventh switch, and the sixteenth switch are normally open. When the relay KA4 is de-energized, the ninth switch, the eleventh switch, and the sixteenth switch are normally closed.

[0019] The tenth switch and the seventeenth switch are electrically connected to the second contact of the relay KA5 respectively, and when the relay KA5 is energized, the tenth switch and the seventeenth switch are normally open, and when the relay KA5 is de-energized, the tenth switch and the seventeenth switch are normally closed.

[0020] Preferably, when four layers of the valve sleeve body are damaged from the inside out, or four layers are damaged from the outside in, or two layers are damaged inside and outside, the buzzer is energized and sounds an alarm, indicating that the valve sleeve body needs to be replaced.

[0021] The beneficial effects of the utility model are as follows: the utility model is reasonably designed, simple and convenient, and can indirectly judge the wear amount of the valve sleeve body through the on-off of the circuit and the indication of the light bulb and the buzzer, thereby playing a role in preventive maintenance, reducing the impact on production, and reducing the extra labor intensity of the operator caused by the accident. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 The utility model is a structural schematic diagram of a pinch valve sleeve structure with a damage self-detection function.

[0024] Figure 2 for Figure 1Enlarged schematic diagram of the middle valve sleeve part.

[0025] Among them, 1-valve body; 2-extrusion block; 3-valve sleeve body; 4-metal wire I; 5-metal wire II; 6-metal wire III; 7-metal wire IV; 8-metal wire V; 9-first switch; 10-bulb I; 11-second switch; 12-bulb II; 13-third switch; 14-bulb III; 15-fourth switch; 16-bulb IV; 17-fifth switch; 18-bulb V; 19-sixth switch; 20-seventh switch; 21-eighth switch; 22-ninth switch; 23-tenth switch; 24-eleventh switch; 25-twelfth switch; 26-thirteenth switch; 27-fourteenth switch; 28-fifteenth switch; 29-sixteenth switch; 30-seventeenth switch; 31-buzzer. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below through specific implementation methods.

[0027] The utility model is a pinch valve sleeve structure with a damage self-detection function, comprising a valve sleeve body 3, a metal wire I4, a metal wire II5, a metal wire III6, a metal wire IV7, a metal wire V8 and a self-detection component; the specific structure is as follows Figure 1 、 Figure 2 As shown, a hollow valve sleeve body 3 is coaxially sleeved inside a horizontally arranged valve body 1, and the left and right ends of the valve sleeve body 3 extend vertically out of the corresponding end faces of the valve body 1. In the middle position of the valve body 1, extrusion blocks 2 are symmetrically provided relative to the upper and lower sides of the valve sleeve body 3. The valve sleeve body 3 is pressed against the center line by the expansion and contraction action of the extrusion blocks 2, thereby realizing the opening and closing of the valve sleeve body 3. Metal wires I4, II5, III6, IV7 and V8 are also provided in parallel in the rubber layer of the valve sleeve body 3 from the inside to the outside. The metal wires I4, II5, III6, IV7 and V8 are respectively coaxially arranged in a spiral shape along the circumferential direction of the valve sleeve body 3, and both ends are connected to the self-test component. The self-test component detects whether the corresponding metal wires I4, II5, III6, IV7 and V8 are broken to determine whether the corresponding layers of the valve sleeve body 3 are damaged.

[0028] Among them, the metal wire I4, the metal wire II5, the metal wire III6, the metal wire IV7 and the metal wire V8 all extend coaxially from the left side of the valve sleeve body 3 to the right side of the valve sleeve body 3, and then coaxially spiral back to the left side of the valve sleeve body 3, and it is necessary to ensure that the metal wire I4, the metal wire II5, the metal wire III6, the metal wire IV7 and the metal wire V8 do not contact each other, and it is necessary to ensure that the metal wire I4, the metal wire II5, the metal wire III6, the metal wire IV7 and the metal wire V8 each form a path.

[0029] like Figure 1 、 Figure 2 As shown, metal wires I4, II5, III6, IV7 and V8 are arranged at equal intervals, and metal wires I4 and II5, II5 and III6, III6 and IV7, and IV7 and V8 are separated by rubber, thereby ensuring that each layer of metal wires forms a path.

[0030] The self-test component of the utility model includes a fuse FU1, a relay KA1, a first switch 9, a light bulb I 10, a fuse FU2, a relay KA2, a second switch 11, a light bulb II 12, a fuse FU3, a relay KA3, a third switch 13, a light bulb III 14, a fuse FU4, a relay KA4, a fourth switch 15, a light bulb IV 16, a fuse FU5, a relay KA5, a fifth switch 17, a light bulb V 18, a sixth switch 19, a seventh switch 20, an eighth switch 21, a ninth switch 22, a tenth switch 23, an eleventh switch 24, a twelfth switch 25, a thirteenth switch 26, a fourteenth switch 27, a fifteenth switch 28, a sixteenth switch 29, a seventeenth switch 30 and a buzzer 31; Figure 1 、 Figure 2 As shown, the two ends of the metal wire Ⅰ4 extend vertically upward from the top of the valve sleeve body 3 relative to the left side of the valve body 1, and one end of the metal wire Ⅰ4 is connected to the positive pole of the power supply through the fuse FU1, and the other end of the metal wire Ⅰ4 is connected to the negative pole of the power supply through the relay KA1, thereby forming a path; one end of the light bulb Ⅰ10 is connected to the positive pole of the power supply through the first switch 9, and the other end of the light bulb Ⅰ10 is connected to the negative pole of the power supply, thereby forming another path; the first switch 9 is electrically connected to the first contact of the relay KA1, and when the relay KA1 is energized, the first switch 9 is normally open, and when the relay KA1 is de-energized, the first switch 9 is normally closed, and then whether the light bulb Ⅰ10 is always on can be used to judge whether the metal wire Ⅰ4 is broken and whether the valve sleeve body 3 is worn to the layer where the metal wire Ⅰ4 is located.

[0031] like Figure 1 、 Figure 2As shown, the two ends of the metal wire Ⅱ5 extend vertically upward from the top of the valve sleeve body 3 relative to the left side of the valve body 1, and one end of the metal wire Ⅱ5 is connected to the positive pole of the power supply through the fuse FU2, and the other end of the metal wire Ⅱ5 is connected to the negative pole of the power supply through the relay KA2, thereby forming a path; one end of the light bulb Ⅱ12 is connected to the positive pole of the power supply through the second switch 11, and the other end of the light bulb Ⅱ12 is connected to the negative pole of the power supply, thereby forming another path; the second switch 11 is electrically connected to the first contact of the relay KA2, and when the relay KA2 is energized, the second switch 11 is normally open, and when the relay KA2 is de-energized, the second switch 11 is normally closed, and then whether the light bulb Ⅱ12 is always on can be used to judge whether the metal wire Ⅱ5 is broken and whether the valve sleeve body 3 is worn to the layer where the metal wire Ⅱ5 is located.

[0032] like Figure 1 、 Figure 2 As shown, the two ends of the metal wire III6 extend vertically upward from the top of the valve sleeve body 3 relative to the left side of the valve body 1, and one end of the metal wire III6 is connected to the positive pole of the power supply through the fuse FU3, and the other end of the metal wire III6 is connected to the negative pole of the power supply through the relay KA3, thereby forming a path; one end of the bulb III14 is connected to the positive pole of the power supply through the third switch 13, and the other end of the metal wire III6 is connected to the negative pole of the power supply, thereby forming another path; the third switch 13 is electrically connected to the first contact of the relay KA3, and when the relay KA3 is energized, the third switch 13 is normally open, and when the relay KA3 is de-energized, the third switch 13 is normally closed, and then whether the metal wire III6 is broken is judged by whether the bulb III14 is always on, and whether the valve sleeve body 3 is worn to the layer where the metal wire III6 is located is judged.

[0033] like Figure 1 、 Figure 2 As shown, the two ends of the metal wire IV7 extend vertically upward from the top of the valve sleeve body 3 relative to the left side of the valve body 1, and one end of the metal wire IV7 is connected to the positive pole of the power supply through the fuse FU4, and the other end of the metal wire IV7 is connected to the negative pole of the power supply through the relay KA4, thereby forming a path; one end of the light bulb IV16 is connected to the positive pole of the power supply through the fourth switch 15, and the other end of the light bulb IV16 is connected to the negative pole of the power supply, thereby forming another path; the fourth switch 15 is electrically connected to the first contact of the relay KA4, and when the relay KA4 is energized, the fourth switch 15 is normally open, and when the relay KA4 is de-energized, the fourth switch 15 is normally closed, and then whether the light bulb IV16 is always on can be used to judge whether the metal wire IV7 is broken and whether the valve sleeve body 3 is worn to the layer where the metal wire IV7 is located.

[0034] like Figure 1 、 Figure 2As shown, the two ends of the metal wire V8 extend vertically upward from the top of the valve sleeve body 3 relative to the left side of the valve body 1, and one end of the metal wire V8 is connected to the positive pole of the power supply through the fuse FU5, and the other end is connected to the negative pole of the power supply through the relay KA5, thereby forming a path; one end of the bulb V18 is connected to the positive pole of the power supply through the fifth switch 17, and the other end is connected to the negative pole of the power supply, thereby forming another path; the fifth switch 17 is electrically connected to the first contact of the relay KA5, and when the relay KA5 is energized, the fifth switch 17 is normally open, and when the relay KA5 is de-energized, the fifth switch 17 is normally closed, and then whether the bulb V18 is always on can be used to judge whether the metal wire V8 is broken and whether the valve sleeve body 3 is worn to the layer where the metal wire V8 is located.

[0035] like Figure 1 、 Figure 2 As shown, one end of the sixth switch 19 is connected to the positive electrode of the power supply, and the other end thereof is connected to one end of the ninth switch 22 via the seventh switch 20 and the eighth switch 21 in sequence; one end of the tenth switch 23 is connected to the positive electrode of the power supply, and the other end thereof is connected to one end of the thirteenth switch 26 via the eleventh switch 24 and the twelfth switch 25 in sequence; one end of the fourteenth switch 27 is connected to the positive electrode of the power supply, and the other end thereof is connected to one end of the seventeenth switch 30 via the fifteenth switch 28 and the sixteenth switch 29 in sequence; the other end of the ninth switch 22, the other end of the thirteenth switch 26, and the other end of the seventeenth switch 30 are respectively connected to one end of a buzzer 31, and the other end of the buzzer 31 is connected to the negative electrode of the power supply.

[0036] like Figure 1 、 Figure 2 As shown, the sixth switch 19 and the fourteenth switch 27 are electrically connected to the second contact of the relay KA1 respectively, and when the relay KA1 is energized, the sixth switch 19 and the fourteenth switch 27 are normally open, and when the relay KA1 is de-energized, the sixth switch 19 and the fourteenth switch 27 are normally closed.

[0037] like Figure 1 、 Figure 2 As shown, the seventh switch 20, the thirteenth switch 26 and the fifteenth switch 28 are electrically connected to the second contact of the relay KA2, respectively. When the relay KA2 is energized, the seventh switch 20, the thirteenth switch 26 and the fifteenth switch 28 are normally open. When the relay KA2 is de-energized, the seventh switch 20, the thirteenth switch 26 and the fifteenth switch 28 are normally closed.

[0038] like Figure 1 、 Figure 2As shown, the eighth switch 21 and the twelfth switch 25 are electrically connected to the second contact of the relay KA3 respectively, and when the relay KA3 is energized, the eighth switch 21 and the twelfth switch 25 are normally open, and when the relay KA3 is de-energized, the eighth switch 21 and the twelfth switch 25 are normally closed.

[0039] like Figure 1 、 Figure 2 As shown, the ninth switch 22, the eleventh switch 24 and the sixteenth switch 29 are electrically connected to the second contact of the relay KA4, respectively. When the relay KA4 is energized, the ninth switch 22, the eleventh switch 24 and the sixteenth switch 29 are normally open. When the relay KA4 is de-energized, the ninth switch 22, the eleventh switch 24 and the sixteenth switch 29 are normally closed.

[0040] like Figure 1 、 Figure 2 As shown, the tenth switch 23 and the seventeenth switch 30 are electrically connected to the second contact of the relay KA5 respectively, and when the relay KA5 is energized, the tenth switch 23 and the seventeenth switch 30 are normally open, and when the relay KA5 is de-energized, the tenth switch 23 and the seventeenth switch 30 are normally closed.

[0041] In the present invention, when the valve sleeve body 3 is damaged in four layers from the inside to the outside, or in four layers from the outside to the inside, or in two layers from the inside to the outside, the buzzer 31 is energized and sounds an alarm, indicating that the valve sleeve body 3 needs to be replaced.

[0042] The working principle of this utility model:

[0043] When the metal wires I4, II5, III6, IV7 and V8 are not broken, the relays KA1, KA2, KA3, KA4 and KA5 are all energized. At this time, the bulbs I10, II12, III14, IV16 and V18 are all off, and the buzzer 31 does not sound an alarm, indicating that the valve sleeve body 3 can be used normally.

[0044] When the metal wire I4, the metal wire II5, the metal wire III6, the metal wire IV7 or the metal wire V8 is broken, for example, the metal wire I4 is broken, the fuse FU1 is blown, the relay KA1 loses power, and the first switch 9, the sixth switch 19 and the fourteenth switch 27 are normally closed, and the light bulb I10 is always on, indicating that the valve sleeve body 3 has been worn to the layer where the metal wire I4 is located;

[0045] When the sixth switch 19, the seventh switch 20, the eighth switch 21 and the ninth switch 22 are all normally closed, or the tenth switch 23, the eleventh switch 24, the twelfth switch 25 and the thirteenth switch 26 are all normally closed, or the fourteenth switch 27, the fifteenth switch 28, the sixteenth switch 29 and the seventeenth switch 30 are all normally closed, the buzzer 31 is energized and sounds an alarm, indicating that the valve sleeve body 3 needs to be replaced.

[0046] The beneficial effects of the present invention are as follows: the present invention is reasonably designed, simple and convenient, and can indirectly judge the amount of wear of the valve sleeve body 3 by the on-off state of the circuit and the indication of the light bulb and the buzzer 31, thereby playing a role in preventive maintenance, reducing the impact on production, and reducing the additional labor intensity of the operator caused by the accident.

[0047] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary engineering technicians in this field should fall within the scope of protection of the present invention. The technical contents requested for protection of the present invention have been fully recorded in the technical requirements.

Claims

1. A pinch valve sleeve structure with a damage self-detection function, characterized by: The invention comprises a valve sleeve body, a metal wire I, a metal wire II, a metal wire III, a metal wire IV, a metal wire V and a self-test component; a hollow valve sleeve body is coaxially sleeved inside a horizontally arranged valve body, the left and right ends of the valve sleeve body vertically extend out of the corresponding end faces of the valve body, and extrusion blocks are symmetrically provided in the middle position inside the valve body relative to the upper and lower sides of the valve sleeve body, and the valve sleeve body is pressed against the center line through the telescopic action of the extrusion blocks, thereby realizing the opening and closing of the valve sleeve body; metal wires I, metal wire II, metal wire III, metal wire IV and metal wire V are also arranged in parallel in sequence from the inside to the outside on the rubber layer of the valve sleeve body, and the metal wires I, metal wire II, metal wire III, metal wire IV and metal wire V are respectively spirally coaxially arranged along the circumferential direction of the valve sleeve body, and both ends of the metal wires are connected to the self-test component, and the self-test component detects whether the corresponding metal wires I, metal wire II, metal wire III, metal wire IV and metal wire V are broken to determine whether the corresponding layer of the valve sleeve body is damaged.

2. The pinch valve sleeve structure with damage self-detection function according to claim 1, characterized in that: The metal wire I, metal wire II, metal wire III, metal wire IV and metal wire V all extend coaxially from the left side of the valve sleeve body to the right side of the valve sleeve body, and then coaxially spiral back to the left side of the valve sleeve body. It is necessary to ensure that the metal wire I, metal wire II, metal wire III, metal wire IV and metal wire V do not contact each other, and it is necessary to ensure that the metal wire I, metal wire II, metal wire III, metal wire IV and metal wire V each form a path.

3. The pinch valve sleeve structure with damage self-detection function according to claim 2, characterized in that: The metal wires I, II, III, IV and V are arranged at equal intervals, and the metal wires I and II, II and III, III and IV, and IV and V are separated by rubber, thereby ensuring that each layer of metal wires forms a path.

4. The pinch valve sleeve structure with damage self-detection function according to claim 1, characterized in that: The self-test component includes a fuse FU1, a relay KA1, a first switch and a light bulb I; the two ends of the metal wire I extend vertically upward from the top of the valve sleeve body relative to the left side of the valve body, and one end thereof is connected to the positive pole of the power supply through the fuse FU1, and the other end thereof is connected to the negative pole of the power supply through the relay KA1, thereby forming a path; one end of the light bulb I is connected to the positive pole of the power supply through the first switch, and the other end thereof is connected to the negative pole of the power supply, thereby forming another path; the first switch is electrically connected to the first contact of the relay KA1, and when the relay KA1 is energized, the first switch is normally open, and when the relay KA1 is de-energized, the first switch is normally closed, and then whether the metal wire I is broken is judged by whether the light bulb I is always on, and whether the valve sleeve body is worn to the layer where the metal wire I is located is judged.

5. The pinch valve sleeve structure with damage self-detection function according to claim 4, characterized in that: It also includes a fuse FU2, a relay KA2, a second switch and a light bulb II; the two ends of the metal wire II respectively extend vertically upward from the top of the valve sleeve body relative to the left side of the valve body, and one end thereof is connected to the positive pole of the power supply through the fuse FU2, and the other end thereof is connected to the negative pole of the power supply through the relay KA2, thereby forming a path; one end of the light bulb II is connected to the positive pole of the power supply through the second switch, and the other end thereof is connected to the negative pole of the power supply, thereby forming another path; the second switch is electrically connected to the first contact of the relay KA2, and when the relay KA2 is energized, the second switch is normally open, and when the relay KA2 is de-energized, the second switch is normally closed, and then whether the light bulb II is always on can be used to judge whether the metal wire II is broken and whether the valve sleeve body is worn to the layer where the metal wire II is located.

6. The pinch valve sleeve structure with damage self-detection function according to claim 5, characterized in that: It also includes a fuse FU3, a relay KA3, a third switch and a light bulb III; the two ends of the metal wire III respectively extend vertically upward from the top of the valve sleeve body relative to the left side of the valve body, and one end thereof is connected to the positive pole of the power supply through the fuse FU3, and the other end thereof is connected to the negative pole of the power supply through the relay KA3, thereby forming a path; one end of the light bulb III is connected to the positive pole of the power supply through the third switch, and the other end thereof is connected to the negative pole of the power supply, thereby forming another path; the third switch is electrically connected to the first contact of the relay KA3, and when the relay KA3 is energized, the third switch is normally open, and when the relay KA3 is de-energized, the third switch is normally closed, and then whether the light bulb III is always on can be used to judge whether the metal wire III is broken and whether the valve sleeve body is worn to the layer where the metal wire III is located.

7. The pinch valve sleeve structure with damage self-detection function according to claim 6, characterized in that: It also includes a fuse FU4, a relay KA4, a fourth switch and a light bulb IV; the two ends of the metal wire IV respectively extend vertically upward from the top of the valve sleeve body relative to the left side of the valve body, and one end thereof is connected to the positive pole of the power supply through the fuse FU4, and the other end thereof is connected to the negative pole of the power supply through the relay KA4, thereby forming a passage; one end of the light bulb IV is connected to the positive pole of the power supply through the fourth switch, and the other end thereof is connected to the negative pole of the power supply, thereby forming another passage; the fourth switch is electrically connected to the first contact of the relay KA4, and when the relay KA4 is energized, the fourth switch is normally open, and when the relay KA4 is de-energized, the fourth switch is normally closed, and then whether the light bulb IV is always on can be used to judge whether the metal wire IV is broken, and whether the valve sleeve body is worn to the layer where the metal wire IV is located.

8. The pinch valve sleeve structure with damage self-detection function according to claim 7, characterized in that: It also includes a fuse FU5, a relay KA5, a fifth switch and a light bulb V; the two ends of the metal wire V extend vertically upward from the top of the valve sleeve body relative to the left side of the valve body, and one end of the metal wire V is connected to the positive pole of the power supply through the fuse FU5, and the other end is connected to the negative pole of the power supply through the relay KA5, thereby forming a path; one end of the light bulb V is connected to the positive pole of the power supply through the fifth switch, and the other end is connected to the negative pole of the power supply, thereby forming another path; the fifth switch is electrically connected to the first contact of the relay KA5, and when the relay KA5 is energized, the fifth switch is normally open, and when the relay KA5 is de-energized, the fifth switch is normally closed, and then whether the light bulb V is always on can be used to judge whether the metal wire V is broken, and whether the valve sleeve body is worn to the layer where the metal wire V is located.

9. The pinch valve sleeve structure with damage self-detection function according to claim 8, characterized in that: The device further includes a sixth switch, a seventh switch, an eighth switch, a ninth switch, a tenth switch, an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch, and a buzzer; one end of the sixth switch is connected to the positive electrode of the power supply, and the other end thereof is connected to one end of the ninth switch in sequence via the seventh switch and the eighth switch; one end of the tenth switch is connected to the positive electrode of the power supply, and the other end thereof is connected to one end of the thirteenth switch in sequence via the eleventh switch and the twelfth switch; one end of the fourteenth switch is connected to the positive electrode of the power supply, and the other end thereof is connected to one end of the seventeenth switch in sequence via the fifteenth switch and the sixteenth switch; the other ends of the ninth switch, the thirteenth switch, and the seventeenth switch are respectively connected to one end of the buzzer, and the other end of the buzzer is connected to the negative electrode of the power supply; The sixth switch and the fourteenth switch are electrically connected to the second contact of the relay KA1, respectively. When the relay KA1 is energized, the sixth switch and the fourteenth switch are normally open. When the relay KA1 is de-energized, the sixth switch and the fourteenth switch are normally closed. The seventh switch, the thirteenth switch, and the fifteenth switch are electrically connected to the second contact of the relay KA2, respectively. When the relay KA2 is energized, the seventh switch, the thirteenth switch, and the fifteenth switch are normally open. When the relay KA2 is de-energized, the seventh switch, the thirteenth switch, and the fifteenth switch are normally closed. The eighth switch and the twelfth switch are electrically connected to the second contact of the relay KA3, respectively. When the relay KA3 is energized, the eighth switch and the twelfth switch are normally open. When the relay KA3 is de-energized, the eighth switch and the twelfth switch are normally closed. The ninth switch, the eleventh switch, and the sixteenth switch are electrically connected to the second contact of the relay KA4, respectively. When the relay KA4 is energized, the ninth switch, the eleventh switch, and the sixteenth switch are normally open. When the relay KA4 is de-energized, the ninth switch, the eleventh switch, and the sixteenth switch are normally closed. The tenth switch and the seventeenth switch are electrically connected to the second contact of the relay KA5 respectively, and when the relay KA5 is energized, the tenth switch and the seventeenth switch are normally open, and when the relay KA5 is de-energized, the tenth switch and the seventeenth switch are normally closed.

10. The pinch valve sleeve structure with damage self-detection function according to claim 9, characterized in that: When the valve sleeve body is damaged in four layers from the inside to the outside, or in four layers from the outside to the inside, or in two layers inside and outside, the buzzer is energized and sounds an alarm, indicating that the valve sleeve body needs to be replaced.

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