Easily-disassembled filtering anti-blocking mechanism and mechanical valve back-closing detection device

Abstract

The utility model relates to the technical field of valve detection, in particular to an easy-to-disassemble filtering anti-blocking mechanism and a mechanical valve back-closing detection device.The easy-to-disassemble filtering anti-blocking mechanism comprises a clamping component, an inlet pipe, a valve body arranged at one end of the inlet pipe and a clamping assembly arranged on the valve body, the outlet pipe is arranged on the valve body; and the filtering part comprises a rotating assembly arranged on the clamping assembly and a filtering assembly arranged on the rotating assembly, by arranging a convex ring, a clamping block, a baffle ring and the like, the filtering structure and the valve body are clamped, the structure is simple and convenient, disassembly is easy, and the situation that the valve cannot be closed due to the fact that impurities are accumulated on the valve body is also avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of valve detection, in particular to an easily disassembled filtering anti-blocking mechanism and a mechanical valve return-closing detection device. Background Art

[0002] Mechanical valves are essential equipment in industrial production pipelines. There are a large number of mechanical valves in oil, gas and water pipelines, which are mainly used to control the flow, direction and pressure of oil, gas and water in the pipelines.

[0003] Since oil, gas and water contain impurities, even if they are treated in time, mechanical valves will still have impurities accumulated after long-term operation, making it impossible for the mechanical valve to close. In addition, the mechanical valve will return to the original position. Since the speed of the valve return is very slow, it cannot be observed by the naked eye. For some important equipment, when the valve returns to a certain position, the valve cannot automatically open, resulting in the flow and pressure of oil, gas and water in the pipeline may not meet the industrial design requirements, affecting the safe production of equipment. In severe cases, it may cause some irreversible failures. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above-mentioned problem that oil, gas and water contain impurities, which makes the mechanical valve unable to close, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide an easily disassembled filtering and anti-blocking mechanism.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: an easily detachable filtering and anti-blocking mechanism, comprising a snap-fit ​​component, including an inlet pipe, a valve body arranged at one end of the inlet pipe, a snap-fit ​​assembly arranged on the valve body, and an outlet pipe arranged on the valve body; and a filtering component, including a rotating assembly arranged on the snap-fit ​​assembly, and a filtering assembly arranged on the rotating assembly.

[0008] As a preferred solution of the easily detachable filtering and anti-blocking mechanism of the utility model, the clamping assembly includes a rotating cylinder arranged in the valve body, a convex ring installed on the top of the rotating cylinder, a retaining ring installed in the valve body, and a rubber pad installed under the retaining ring; wherein a clamping part is arranged between the convex ring and the retaining ring.

[0009] As a preferred solution of the easily detachable filtering and anti-blocking mechanism described in the utility model, the engaging part includes a limit groove opened on the retaining ring, a lower limit ring installed in the limit groove, a reset spring arranged in the lower limit ring, a limit shaft installed in the reset spring, and a limit rod installed on the outer wall of the middle part of the limit shaft; wherein an upper limit ring is arranged on the lower limit ring.

[0010] As a preferred solution of the easily detachable filtering and anti-blocking mechanism of the utility model, the engaging member further comprises a connecting rod installed on the top of the limiting shaft, a limiting block installed on the connecting rod, and an engaging block arranged on the limiting block.

[0011] As a preferred solution of the easily detachable filtering and anti-blocking mechanism of the utility model, the rotating assembly includes a rotating shaft arranged in a rotating drum, an impeller installed on the outer wall of the rotating shaft, a rotating rod arranged on the impeller, and a rotating groove opened in the rotating drum.

[0012] As a preferred solution of the easily detachable filtering and anti-blocking mechanism described in the utility model, the filtering assembly includes a filter cartridge installed on a rotating drum, a rotating part arranged in the filter cartridge, a dust sweeping plate arranged in the filter cartridge, and a collecting part installed on the filter cartridge.

[0013] As a preferred solution of the easily detachable filtering and anti-blocking mechanism of the utility model, the rotating member includes a rotating rod arranged in the filter cartridge and a rotating groove opened in the filter cartridge.

[0014] The beneficial effects of the easily detachable filtering and anti-blocking mechanism described in the utility model are as follows: the utility model engages the filtering structure with the valve body by setting a convex ring, a locking block and a retaining ring, etc. The structure is simple and convenient, easy to disassemble, and also avoids the accumulation of impurities in the valve body, thereby making the valve unable to close.

[0015] In actual use, there is still a problem of slow valve closing, which causes the flow and pressure of oil, gas and water in the pipeline to fail to meet industrial design requirements, affecting the safe and stable operation of the equipment.

[0016] In order to solve the above technical problems, the utility model also provides the following technical solutions: a mechanical valve return-closing detection device, including the above-mentioned easily detachable filtering and anti-blocking mechanism, and also including a detection component, including a valve handwheel installed on the valve body, a detection component arranged on the valve handwheel, and a locking component arranged on the detection component.

[0017] As a preferred solution of the mechanical valve return-closing detection device of the utility model, wherein: the detection component includes an installation box arranged on the valve handwheel, a resistance wire arranged in the installation box, a contact rod arranged on the resistance wire, and a single-chip microcomputer arranged on the contact rod; wherein a battery is arranged in the installation box, a power switch is arranged in the installation box, and an alarm light is arranged in the installation box.

[0018] As a preferred solution of the mechanical valve return-closing detection device of the utility model, the locking assembly includes a first locking rod installed on the installation box, a second locking rod installed on the valve handwheel, and a screw arranged on the second locking rod.

[0019] The beneficial effects of the mechanical valve return-to-close detection device described in the utility model: the utility model can issue an alarm when the valve opening changes beyond the set value by setting a contact rod, a resistance wire and a single-chip microcomputer, and can detect the valve opening in real time, making it convenient for operation and maintenance personnel to promptly discover whether the valve has returned to close. The entire device has a wide power supply voltage range, does not require an external power supply, has a simple structure, and is easy to disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The figure is a schematic diagram of the overall structure of an easily detachable filtering and anti-blocking mechanism.

[0022] Figure 2 The figure is a schematic cross-sectional view of a valve body with an easily disassembled filtering and anti-blocking mechanism.

[0023] Figure 3 The present invention is a cross-sectional schematic diagram of a snap-fit ​​assembly of an easily detachable filtering and anti-blocking mechanism.

[0024] Figure 4 The present invention is a cross-sectional schematic diagram of a filter component with an easily detachable filter anti-blocking mechanism.

[0025] Figure 5 The figure is a schematic diagram of the overall structure of a mechanical valve return-closing detection device.

[0026] Figure 6 The present invention is a schematic cross-sectional view of a detection component of a mechanical valve return-closing detection device. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Example 1

[0031] Reference Figure 1-Figure 4 , is the first embodiment of the utility model, which provides an easily detachable filtering and anti-blocking mechanism, including a snap-fit ​​component 100, including an inlet pipe 101, a valve body 102 arranged at one end of the inlet pipe 101, a snap-fit ​​assembly 103 arranged on the valve body 102, and an outlet pipe 104 arranged on the valve body 102; and a filter component 200, including a rotating assembly 201 arranged on the snap-fit ​​assembly 103, and a filter assembly 202 arranged on the rotating assembly 201.

[0032] Specifically, the inlet pipe 101 is installed above the valve body 102, the outlet pipe 104 is installed below the valve body 102, the snap-fit ​​assembly 103 is installed at one end of the valve body 102 close to the inlet pipe 101, and the filter assembly 202 is installed below the snap-fit ​​assembly 103. The snap-fit ​​assembly 103 facilitates the installation and disassembly of the filter assembly 202 inside the valve body 102. The filter assembly 202 can filter impurities to prevent the accumulation of impurities after the valve body 102 is used for a long time, which may affect the opening and closing of the valve handwheel 301.

[0033] Furthermore, the clamping assembly 103 includes a rotating cylinder 103a arranged in the valve body 102, a convex ring 103b installed on the top of the rotating cylinder 103a, a retaining ring 103c installed in the valve body 102, and a rubber pad 103d installed under the retaining ring 103c; wherein a clamping member 103e is arranged between the convex ring 103b and the retaining ring 103c.

[0034] Specifically, the rotating cylinder 103a is arranged on the inner wall of the valve body 102 near one end of the inlet pipe 101, a convex ring 103b is fixedly installed on the top of the rotating cylinder 103a, a retaining ring 103c is arranged below the convex ring 103b, the retaining ring 103c is fixedly installed on the inner wall of the valve body 102, a rubber pad 103d is fixedly installed below the retaining ring 103c, and the rubber pad 103d is fixedly installed on the inner wall of the valve body 102, the rubber pad 103d can prevent the unfiltered liquid from mixing with the filtered liquid during the transportation process, and the convex ring 103b and the retaining ring 103c are engaged with each other by using a clamping piece 103e.

[0035] Furthermore, the engaging member 103e includes a limit groove 103e-1 opened on the retaining ring 103c, a lower limit ring 103e-2 installed in the limit groove 103e-1, a return spring 103e-3 arranged in the lower limit ring 103e-2, a limit shaft 103e-4 installed in the return spring 103e-3, and a limit rod 103e-5 installed on the middle outer wall of the limit shaft 103e-4; wherein, an upper limit ring 103e-6 is arranged on the lower limit ring 103e-2.

[0036] Furthermore, the engaging member 103e also includes a connecting rod 103e-7 installed on the top of the limiting shaft 103e-4, a limiting block 103e-8 installed on the connecting rod 103e-7, and an engaging block 103e-9 arranged on the limiting block 103e-8.

[0037] Specifically, the limiting groove 103e-1 is opened above the retaining ring 103c, and there are six of them. A lower limiting ring 103e-2 is fixedly installed in the limiting groove 103e-1. The lower limiting ring 103e-2 is a ring body, and the upper part is set to an arc shape close to an L shape. A return spring 103e-3 is arranged in the lower limiting ring 103e-2. One end of the return spring 103e-3 is fixedly installed in the limiting groove 103e-1, and the other end of the return spring 103e-3 is fixedly connected to the limiting shaft 103e-4. Among them, an upper limiting ring 103e-6 is arranged on the lower limiting ring 103e-2, and a gap is left between the upper limiting ring 103e-6 and the lower limiting ring 103e-2. The lower part of the upper limiting ring 103e-6 is set to an arc shape close to an L shape. The limiting shaft 103e-4 The diameter is smaller than the diameter of the inner ring of the upper limit ring 103e-6 and the lower limit ring 103e-2, and the limit shaft 103e-4 can slide in the upper limit ring 103e-6 and the lower limit ring 103e-2. A limit rod 103e-5 is fixedly installed in the middle of the limit shaft 103e-4, and a connecting rod 103e-7 is fixedly installed on the top of the limit shaft 103e-4. A limit block 103e-8 is fixedly installed on the top of the connecting rod 103e-7. The limit block 103e-8 is a rectangular parallelepiped with inclined surfaces at both ends, and the inclined surfaces face upward. A snap-fit ​​block 103e-9 is arranged above the limit block 103e-8. The snap-fit ​​block 103e-9 is fixedly installed below the convex ring 103b, and its position and quantity correspond to those of the snap-fit ​​block 103e-9. The convex ring 103b is a rectangular parallelepiped with holes and grooves opened inside.

[0038] Operation process: When in use, before installing the inlet pipe 101, the limit rod 103e-5 in the valve body 102 is at the L position of the upper limit ring 103e-6. When the engaging block 103e-9 on the convex ring 103b is manually pressed against the limit block 103e-8 on the retaining ring 103c, the limit block 103e-8 moves downward under the force, driving the limit shaft 103e-4 to move between the upper limit ring 103e-6 and the lower limit ring 103e-6. 03e-2, the limiting rod 103e-5 on the limiting shaft 103e-4 moves along the arc surface at the top of the lower limiting ring 103e-2, so that the limiting rod 103e-5 rotates 90°, and the return spring 103e-3 below the limiting shaft 103e-4 is compressed during this movement and then returns to its initial state. The limiting block 103e-8 above the limiting shaft 103e-4 rotates 90° during this movement. The length of the positioning block 103e-8 is greater than the width of the hole groove above the locking block 103e-9, so the convex ring 103b is fixed above the retaining ring 103c, which plays the role of fixing the retaining ring 103c. When the convex ring 103b is pressed, the convex ring 103b drives the locking block 103e-9 to move downward, and the locking block 103e-9 drives the limiting rod 103e-5 on the limiting shaft 103e-4 to move between the upper limiting ring 103e-6 and the lower limiting ring 103e-8. The ring 103e-2 moves, and the limit rod 103e-5 rotates 90°, which also drives the limit shaft 103e-4 to rotate 90° again. At this time, the limit block 103e-8 also rotates accordingly, and the limit block 103e-8 changes direction. At this time, the long side of the limit block 103e-8 corresponds to the direction of the hole groove of the locking block 103e-9, so that the convex ring 103b is separated from the retaining ring 103c. The structure is simple and convenient, easy to disassemble, and convenient to replace.

[0039] Example 2

[0040] Reference Figure 1-Figure 4 , which is the second embodiment of the utility model. This embodiment is different from the first embodiment in that the rotating assembly 201 includes a rotating shaft 201a arranged in the rotating drum 103a, an impeller 201b installed on the outer wall of the rotating shaft 201a, a rotating rod 201c arranged on the impeller 201b, and a rotating groove 201d opened in the rotating drum 103a.

[0041] Specifically, the rotating shaft 201a is arranged in the center of the rotating drum 103a and the filter drum 202a, and the outer wall of the rotating shaft 201a located in the rotating drum 103a is fixedly installed with an impeller 201b, the impeller 201b is at an oblique angle to the axis of the rotating shaft 201a, and there are four impellers 201b, and one end of the impeller 201b close to the rotating drum 103a is fixedly connected with a rotating rod 201c, and there are two rotating rods 201c, and one end of the rotating rod 201c close to the rotating drum 103a is provided with a rotating ball, and a rotating groove 201d is opened in the rotating drum 103a, the rotating ball is arranged in the rotating groove 201d, and rotates in the rotating groove 201d, and the rotating rod 201c plays a supporting role to prevent the rotating shaft 201a from shaking when it rotates.

[0042] Furthermore, the filter assembly 202 includes a filter cartridge 202a mounted on the rotary drum 103a, a rotating member 202b disposed in the filter cartridge 202a, a dust sweeping plate 202c disposed in the filter cartridge 202a, and a collecting member 202d mounted on the filter cartridge 202a.

[0043] Furthermore, the rotating member 202b includes a rotating rod 202b-1 disposed in the filter cartridge 202a, and a rotating groove 202b-2 opened in the filter cartridge 202a.

[0044] Specifically, a filter cartridge 202a is fixedly installed below the rotating drum 103a, and a rotating rod 202b-1 is fixedly connected to the upper and lower outer walls of the rotating shaft 201a located inside the filter cartridge 202a. A rotating bead is provided at one end of the rotating rod 202b-1 close to the filter net, and a rotating groove 202b-2 is provided on the outer wall of the filter cartridge 202a close to the rotating rod 202b-1. The rotating bead rotates in the rotating groove 202b-2. The filter cartridge 202a between the two rotating rods 202b-1 is set as a filter net, wherein a collecting piece 202d is fixedly installed below the filter cartridge 202a, and the collecting piece 202d is conical and used for collecting impurities.

[0045] The rest of the structure is the same as that of Example 1.

[0046] Operation process: During use, when oil, gas, water, etc. enter the valve body 102 through the inlet pipe 101, the oil, gas, water, etc. impact the impeller 201b, and the impeller 201b drives the rotating shaft 201a to rotate. At this time, the rotating shaft 201a drives the dust sweeping plate 202c to rotate. The dust sweeping plate 202c can remove impurities on the filter screen to avoid impurity accumulation and affect the circulation. When the rotating shaft 201a rotates, it drives the oil, gas, water, etc. to rotate, causing the impurities to produce centrifugal motion and move into the collecting piece 202d, thereby preventing the impurities from flowing to the valve handwheel 301, thereby affecting the opening and closing of the valve handwheel 301.

[0047] Example 3

[0048] Reference Figure 1-Figure 6 , which is the third embodiment of the utility model. Different from the above embodiments, this embodiment provides a mechanical valve return-closing detection device, including the above-mentioned easily detachable filtering and anti-blocking mechanism, and also includes a detection component 300, including a valve handwheel 301 installed on the valve body 102, a detection component 302 arranged on the valve handwheel 301, and a locking component 303 arranged on the detection component 302.

[0049] Specifically, the valve handwheel 301 is rotatably connected to the valve body 102. A detection component 302 is provided on the valve handwheel 301 for detecting the opening of the valve handwheel 301 to prevent the valve handwheel 301 from slowly closing after a long period of operation, which is not easily detected by the naked eye, and to prevent the valve handwheel 301 from being unable to open automatically after closing, thereby affecting the flow and pressure of oil, gas and water in the pipeline. A locking component 303 is installed on the detection component 302 and the valve handwheel 301 to fix the detection component 302 on the valve handwheel 301.

[0050] Furthermore, the detection component 302 includes an installation box 302a arranged on the valve handwheel 301, a resistance wire 302b arranged in the installation box 302a, a contact rod 302c arranged on the resistance wire 302b, and a single-chip computer 302d arranged on the contact rod 302c; wherein, a battery 302e is arranged in the installation box 302a, a power switch 302f is arranged in the installation box 302a, and an alarm light 302g is arranged in the installation box 302a.

[0051] Specifically, the installation box 302a is placed on the side of the valve handwheel 301 away from the valve body 102, and can rotate with the rotation of the valve handwheel 301. A resistance wire 302b is installed in the installation box 302a, and a voltage is applied to both ends of the resistance wire 302b. Since one end of the resistance wire 302b is grounded, the valve opening can be converted into a voltage signal using the principle of Ohm's law to realize valve opening detection. The resistance wire 302b is overlapped with one end of the contact rod 302c, and the other end of the contact rod 302c is connected to the pin of the microcontroller 302d. The contact rod 302c can be used as a conductor. Wires are connected between the microcontroller 302d and the battery 302e, the power switch 302f and the alarm light 302g.

[0052] Furthermore, the locking assembly 303 includes a first locking rod 303a installed on the installation box 302a, a second locking rod 303b installed on the valve handwheel 301, and a screw 303c disposed on the second locking rod 303b.

[0053] Specifically, first locking rods 303a are fixedly installed on the outer walls of both sides of the installation box 302a, second locking rods 303b are fixedly installed on the outer walls of both sides of the valve handwheel 301, and screws 303c are arranged between the first locking rods 303a and the second locking rods 303b to facilitate fixing the installation box 302a on the valve handwheel 301.

[0054] The rest of the structure is the same as that of Example 2.

[0055] Operation process: When in use, install the detection component 302 on the valve handwheel 301. When the valve handwheel 301 is in the fully closed position, the contact rod 302c is at the end of the resistance wire 302b, and the resistance between the contact rod 302c and the resistance wire 302b is close to 0, and the voltage signal detected by the single chip microcomputer 302d is also close to 0. When the valve handwheel 301 is in the fully open position, the contact rod 302c is at the top of the resistance wire 302b, and the resistance between the contact rod 302c and the resistance wire 302b is the largest, and the voltage signal detected by the single chip microcomputer 302d is also close to the voltage applied to the two ends of the resistance wire 302b. 3.3V voltage is added to both ends of 2b, and the output voltage is connected to the voltage stabilizing circuit to stabilize the voltage at 3.3V. When the valve hand wheel 301 rotates, the contact rod 302c rotates with the valve hand wheel 301, and the contact rod 302c slides on the resistance wire 302b, that is, the voltage of the contact rod 302c to the ground will also change accordingly. When the voltage of the battery 302e is lower than the set value, the output pin of the single-chip microcomputer 302d outputs a high level and lights up the alarm light 302g, which is convenient for maintenance personnel to find out in time. The whole device has a wide power supply voltage range and is powered by the battery 302e. It does not need an external power supply, has a simple structure, and is easy to disassemble.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An easily detachable filtering and anti-blocking mechanism, characterized in that: include, A snap-fit ​​component (100) comprising an inlet pipe (101), a valve body (102) arranged at one end of the inlet pipe (101), a snap-fit ​​assembly (103) arranged on the valve body (102), and an outlet pipe (104) arranged on the valve body (102); and, A filtering component (200), comprising a rotating component (201) arranged on the locking component (103), and a filtering component (202) arranged on the rotating component (201); The clamping assembly (103) comprises a rotating cylinder (103a) arranged in the valve body (102), a convex ring (103b) installed on the top of the rotating cylinder (103a), a retaining ring (103c) installed in the valve body (102), and a rubber pad (103d) installed below the retaining ring (103c); Wherein, a clamping member (103e) is provided between the convex ring (103b) and the retaining ring (103c); The engaging member (103e) comprises a limiting groove (103e-1) formed on the retaining ring (103c), a lower limiting ring (103e-2) installed in the limiting groove (103e-1), a return spring (103e-3) arranged in the lower limiting ring (103e-2), a limiting shaft (103e-4) installed in the return spring (103e-3), and a limiting rod (103e-5) installed on the outer wall of the middle part of the limiting shaft (103e-4); Wherein, an upper limit ring (103e-6) is arranged on the lower limit ring (103e-2); The engaging member (103e) further comprises a connecting rod (103e-7) mounted on the top of the limiting shaft (103e-4), a limiting block (103e-8) mounted on the connecting rod (103e-7), and an engaging block (103e-9) arranged on the limiting block (103e-8).

2. The easily detachable filtering and anti-blocking mechanism according to claim 1, characterized in that: The rotating assembly (201) comprises a rotating shaft (201a) arranged in a rotating drum (103a), an impeller (201b) mounted on the outer wall of the rotating shaft (201a), a rotating rod (201c) arranged on the impeller (201b), and a rotating groove (201d) opened in the rotating drum (103a).

3. The easily detachable filtering and anti-blocking mechanism according to claim 2, characterized in that: The filter assembly (202) comprises a filter cartridge (202a) mounted on a rotating drum (103a), a rotating member (202b) disposed in the filter cartridge (202a), a dust sweeping plate (202c) disposed in the filter cartridge (202a), and a collecting member (202d) mounted on the filter cartridge (202a).

4. The easily detachable filtering and anti-blocking mechanism according to claim 3, characterized in that: The rotating member (202b) comprises a rotating rod (202b-1) arranged in the filter cartridge (202a), and a rotating groove (202b-2) opened in the filter cartridge (202a).

5. A mechanical valve return detection device, characterized in that: The method comprises the easily detachable filtering and anti-blocking mechanism according to any one of claims 1 to 4, and further comprises: The detection component (300) comprises a valve handwheel (301) mounted on the valve body (102), a detection assembly (302) arranged on the valve handwheel (301), and a locking assembly (303) arranged on the detection assembly (302).

6. The mechanical valve return detection device according to claim 5, characterized in that: The detection component (302) comprises a mounting box (302a) arranged on the valve hand wheel (301), a resistance wire (302b) arranged in the mounting box (302a), a contact rod (302c) arranged on the resistance wire (302b), and a single chip computer (302d) arranged on the contact rod (302c); Wherein, a battery (302e) is arranged in the installation box (302a), a power switch (302f) is arranged in the installation box (302a), and an alarm light (302g) is arranged in the installation box (302a).

7. The mechanical valve return detection device according to claim 6, characterized in that: The locking assembly (303) comprises a first locking rod (303a) mounted on the mounting box (302a), a second locking rod (303b) mounted on the valve hand wheel (301), and a screw (303c) arranged on the second locking rod (303b).

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