A pressure switch monitoring device

Abstract

The present invention discloses a pressure switch monitoring device, including a pressure rod, a sleeve, a rod body, a protective shell, a magnet, a reed switch and a spring; the pressure rod is detachably mounted on the top of the sleeve, the sleeve is sleeved on the outer surface of the rod body, the protective shell is mounted on the cavity surface of the sleeve, the magnet is mounted on the inner shell wall of the protective shell, the reed switch is mounted in the cavity of the rod body, the reed switch passes through the bottom of the rod body through a signal line for connection with a monitoring device, and the spring is mounted on the outer surface of the rod body; wherein the position of the magnet is higher than that of the reed switch. The pressure switch monitoring device provided by the present invention can prevent the device from failing to work properly due to water, sludge, debris, etc. entering the interior of the device due to failure of the sealing of the device shell during long-term use, causing the device to fail.

Description

Technical Field

[0001] The invention relates to the field of switch monitoring, and in particular to a pressure switch monitoring device. Background Art

[0002] At present, industries such as water and gas use a large number of IoT smart terminal devices in many scenarios to monitor the overall working status of the platform and ensure the normal operation of functions such as real-time monitoring, cross-warning, and triggering alarms. In the actual use environment of the equipment, it is often in a harsh environment with many temperature changes, oil pollution, rust, corrosion, and water immersion. When the monitoring components or transmission lines of the equipment are invaded by water or other impurities, it will cause the internal circuit to short-circuit and fail to work properly. In severe cases, it may even damage the equipment. Therefore, it is necessary to design a monitoring device with a high protection level to ensure that the device is not affected by harsh external environmental conditions.

[0003] Traditional monitoring devices generally use a sealing method that uses a sealing ring at the joint of the device shell to achieve the purpose of waterproofing, but this method is prone to the risk of installation distortion and deformation leading to waterproof failure. In addition, after long-term use, the sealing ring may also fail due to elastic fatigue and other adverse conditions. Summary of the invention

[0004] In view of the above problems, the purpose of an embodiment of the present invention is to provide a pressure switch monitoring device that can prevent the device from failing and being unable to work normally due to failure of the device casing seal during long-term use, resulting in water, sludge, debris, etc. entering the device.

[0005] In order to achieve the above-mentioned purpose, an embodiment of the present invention provides a pressure switch monitoring device, including a pressure rod, a sleeve, a rod body, a protective shell, a magnet, a reed switch and a spring; the pressure rod is detachably mounted on the top of the sleeve, the sleeve is sleeved on the outer surface of the rod body, the protective shell is mounted on the cavity surface of the sleeve, the magnet is mounted on the inner shell wall of the protective shell, the reed switch is mounted in the cavity of the rod body, the reed switch passes through the bottom of the rod body through a signal line for connecting to a monitoring device, and the spring is mounted on the outer surface of the rod body; wherein the position of the magnet is higher than the position of the reed switch.

[0006] Further, the pressure rod is a stroke indicating rod; the stroke indicating rod includes a stroke indicating rod cap, a flexible pressure rod and a locking head; the stroke indicating rod cap is installed on the top of the flexible pressure rod; wherein the outer surface of the stroke indicating rod cap has a stroke scale marking; the flexible pressure rod is fixed to the top of the sleeve through the locking head.

[0007] Furthermore, the travel indicating rod further comprises a supporting screw; the supporting screw is nested in the bottom of the flexible pressure rod.

[0008] Furthermore, the pressure switch monitoring device also includes a spring support rod and a rod mounting bracket; the spring support rod is installed at the bottom of the spring; the rod mounting bracket is installed on both sides of the sleeve; wherein the rod mounting bracket is provided with a mounting hole.

[0009] Furthermore, the casing includes an upper casing and a lower casing; the upper casing and the lower casing are connected by threads to form the casing.

[0010] Furthermore, the reed switch adjusts its installation position in the cavity of the rod body up and down according to a preset stroke; the reed switch includes an upper reed leaf and a lower reed leaf, the upper reed leaf is connected to the monitoring device by passing through the bottom of the rod body via a first signal line, and the lower reed leaf is connected to the monitoring device by passing through the bottom of the rod body via a second signal line.

[0011] Furthermore, the magnet is an annular magnetic ring; then, the protective shell is an annular shell, and the annular magnetic ring is installed on the inner shell wall of the annular shell.

[0012] Furthermore, the spring is a conical spring.

[0013] Furthermore, the cavity of the rod body includes a filling material for protecting the reed switch and the signal line; wherein the filling material is epoxy resin potting glue, silicone or glass glue.

[0014] Furthermore, the rod body is made of stainless steel or engineering plastic; the protective shell is made of stainless steel or engineering plastic.

[0015] Compared with the prior art, the beneficial effect of the embodiments of the present invention is that: the pressure switch monitoring device provided by the embodiments of the present invention utilizes a protective shell and a sleeve to protect the internal components of the device, which can effectively prevent the device from failing in the long-term use due to the failure of the device shell seal, resulting in water, sludge, debris, etc. entering the device, causing the device to fail and unable to work normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a preferred embodiment of a pressure switch monitoring device provided by the present invention;

[0017] Figure 2 It is a structural schematic diagram of a preferred embodiment of a travel indicating rod cap in a pressure switch monitoring device provided by the present invention;

[0018] Figure 3 is a schematic diagram of the working state of another preferred embodiment of a pressure switch monitoring device provided by the present invention;

[0019] Figure 4 It is a structural schematic diagram of a preferred embodiment of a sleeve in a pressure switch monitoring device provided by the present invention;

[0020] Figure 5 yes Figure 3 A local enlarged schematic diagram of the middle A;

[0021] Figure 6 It is a schematic diagram of the working state of a preferred embodiment of a spring in a pressure switch monitoring device provided by the present invention;

[0022] Figure 7 It is a schematic diagram of the internal structure of the cavity of a preferred embodiment of a rod body in a pressure switch monitoring device provided by the present invention. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1 In a preferred embodiment, the present invention provides a pressure switch monitoring device, including a pressure rod, a sleeve, a rod body 11, a protective shell 6, a magnet, a reed switch 7 and a spring 9, as follows:

[0025] The pressure rod is detachably mounted on the top of the sleeve, the sleeve is sleeved on the outer surface of the rod body 11, the protective shell 6 is mounted on the cavity surface of the sleeve, the magnet is mounted on the inner shell wall of the protective shell 6, the reed switch 7 is mounted in the cavity of the rod body 11, the reed switch 7 passes through the bottom of the rod body 11 through a signal line for connecting to a monitoring device, and the spring 9 is mounted on the outer surface of the rod body 11.

[0026] The position of the magnet is higher than that of the reed switch 7; the rod body is usually made of stainless steel or engineering plastics.

[0027] Further, the pressure rod is a travel indicating rod, comprising a travel indicating rod cap 1, a flexible pressure rod 2 and a locking head 3, as follows:

[0028] The travel indicating rod cap 1 is mounted on the top of the flexible pressure rod 2 , and the flexible pressure rod 2 is fixed to the top of the sleeve through the locking head 3 .

[0029] See also Figure 2The outer surface of the travel indicating cap 1 is provided with a travel scale mark 1c, and the appropriate installation height can be adjusted by aligning the selected travel scale mark 1c with the horizontal plane of the building substrate 1b.

[0030] Furthermore, the travel indicating rod further comprises a supporting screw 4 , and the supporting screw 4 is nested in the bottom of the flexible pressure rod 2 .

[0031] It should be noted that the flexible pressure rod 2 is designed to be elastic. When an object applies downward pressure to the flexible pressure rod 2, the downward pressure angle may not necessarily maintain vertical downward pressure. If a conventional rigid pressure rod is used, when the rigid pressure rod is in an inclined state and exceeds a certain angle, the outer shell wall of the protective shell 6 is easily stuck on the outer surface of the rod body 11, causing the protective shell 6 to be unable to reach the position of the preset stroke, and easily causing the rigid pressure rod to be twisted or even broken due to the oblique shear force. When a flexible pressure rod 2 made of elastic material is used, due to the elasticity of the rod body, when subjected to an inclined downward pressure, the top of the flexible pressure rod 2 will be locally deformed according to the force. At the bottom of the flexible pressure rod 2, a pressure rod bottom support screw 4 is nested, which can keep the bottom shape of the flexible pressure rod 2 unchanged, so that the final transmission direction of the downward pressure is vertical, ensuring that the protective shell 6 moves downward smoothly, and because there is an elastic deformation area in the upper half of the flexible pressure rod 2, it can effectively protect the entire device from being subjected to excessive loads.

[0032] Furthermore, the pressure switch monitoring device also includes a spring support rod 10 and a rod body mounting bracket 12 .

[0033] The spring support rod 10 is installed at the bottom of the spring 9; the rod body mounting bracket 12 is installed on both sides of the sleeve.

[0034] See also Figure 3 The rod body mounting frame 12 is provided with an adjustment mounting hole 12a, which can adjust the upper and lower mounting positions of the bracket according to different strokes; the signal line 11a includes a first signal line and a second signal line.

[0035] Furthermore, the casing includes an upper casing 5 and a lower casing 8 .

[0036] like Figure 4 As shown, the upper sleeve 5 and the lower sleeve 8 are connected by threads to form a sleeve 8b. After the upper sleeve 5 and the lower sleeve 8 are connected, a cavity space is formed therein. When the pressure switch monitoring device is installed vertically, due to the existence of air pressure in the cavity of the sleeve 8b, when the device is submerged in water, water will not enter the cavity of the sleeve 8b, thereby preventing sludge, debris, etc. brought by the water flow from entering the gap between the outer wall of the protective shell 6 and the outer surface of the rod body 11, or forming debris residue accumulation in the cavity of the sleeve 8b, thereby hindering the smooth up and down movement of the protective shell 6.

[0037] Furthermore, the installation position of the reed switch 7 in the cavity of the rod body 11 is adjusted up and down according to a preset stroke.

[0038] like Figure 5 As shown, the reed switch 7 includes an upper reed 7a and a lower reed 7b; the upper reed 7a is connected to the monitoring device 13 through a first signal line passing through the bottom of the rod body 11, and the lower reed 7b is connected to the monitoring device 13 through a second signal line passing through the bottom of the rod body 11.

[0039] It should be noted that in the initial state, the upper spring leaf 7a and the lower spring leaf 7b are in a non-touching state by default. When the protective shell 6 descends along the axis of the rod body 11 and reaches a horizontal position overlapping with the top of the upper spring leaf 7a and the lower spring leaf 7b, the magnet 6a inside the protective shell 6 will use magnetic force to attract the upper spring leaf 7a and the lower spring leaf 7b together to form a closed contact, thereby making the upper spring tube 7a and the lower spring leaf 7b become closed.

[0040] Furthermore, the magnet 6a is an annular magnetic ring; accordingly, the protective shell 6 is an annular shell, and the annular magnetic ring is installed on the inner shell wall of the annular shell.

[0041] It should be noted that the protective shell 6 is a whole with a closed inner cavity, usually made of stainless steel or engineering plastics. The magnet 6a is effectively protected in the sealed cavity of the protective shell 6, which is dustproof and waterproof and can avoid adverse effects caused by harsh external conditions.

[0042] Furthermore, the spring 9 is a conical spring that is smaller at the bottom and larger at the top.

[0043] like Figure 6 As shown, the larger annular area 9a at the top of the tower-shaped spring contacts the internal pressure step 8c of the lower sleeve 8, and the larger force-bearing area can realize uniform force on the contact surface, making the up and down movement of the pressure switch monitoring device more stable; and, since the outer diameter of each coil of the tower-shaped spring increases from small to large, it is equivalent to that each coil of the spring wire will cooperate to bear the external pressure, thereby providing better support force, avoiding the traditional cylindrical spring after being compressed by external force for a long time, due to the superimposed pressure all gathered at the bottom coils of the spring wire, which easily causes spring fatigue failure. Therefore, the tower spring is particularly suitable for short-stroke and high-pressure working occasions.

[0044] Reference Figure 7 In a preferred embodiment, the cavity of the rod body 11 includes a filling material 11b for protecting the reed switch 7 and the signal line 11a.

[0045] The filling material 11b may be epoxy resin potting glue, silicone glue, glass glue or other materials that can be used for sealing.

[0046] Preferably, in the present embodiment, the filling material 11 b is epoxy resin potting glue. The epoxy resin has a high hardness after being cured and can seal the rod body 11 while curing the signal line 11 a and protecting the reed switch 7 .

[0047] In the embodiment of the present invention, after the installation position of the reed switch 7 is determined, the filling material 11b is used to fill and seal the interior of the cavity of the rod body 11, so that the reed switch 7 can be effectively protected inside the cavity, can be dustproof and waterproof, and avoid the adverse effects of harsh external conditions.

[0048] A pressure switch monitoring device provided in an embodiment of the present invention utilizes a protective shell and a sleeve to protect the internal components of the device, rather than adopting a traditional sealing method such as sealing with a sealing ring. This can effectively prevent the device from failing in operation due to failure of the device shell seal during long-term use, resulting in water, sludge, debris, etc. entering the device, causing the device to fail and be unable to work normally.

[0049] In order to better illustrate the working process of a pressure switch monitoring device provided by an embodiment of the present invention, Figure 3 and Figure 5 To explain in detail:

[0050] first, Figure 3 8a in the figure is a sleeve component, which is composed of a travel indicator rod cap 1, a flexible pressure rod 2, a locking head 3, a support screw 4, an upper sleeve 5, a protective shell 6 and a lower sleeve 8.

[0051] When the pressure plate 1a is pressed down, it contacts the top of the travel indicator rod cap 1, and the sleeve component 8a as a whole moves downward along the axis of the rod body 11 due to the downward pressure, and the spring 9 is compressed. When the magnet 6a inside the protective housing 6 and the top of the upper reed 7a and the top of the lower reed 7b inside the reed switch 7 are at the same horizontal position, the top of the upper reed 7a and the top of the lower reed 7b are attracted due to the influence of magnetic force, so that the signal of the electric contact closure is transmitted to the monitoring system of the monitoring device 13 through the signal line 11a, so that the system recognizes that the pressure plate 1a is in the closed state.

[0052] When the pressure plate 1a is lifted upward, the spring 9 returns to its original height due to the rebound force, and at the same time drives the sleeve component 8a to rise to its initial position. At this time, since the magnet 6a returns to its initial position together with the protective shell 6, the upper reed 7a and the lower reed 7b inside the reed switch 7 are no longer affected by the magnetic force and return to a non-contact state, and the electric contact disconnection signal is transmitted to the monitoring system of the monitoring device 13 through the signal line 11a, so that the system recognizes that the pressure plate 1a is in an open state.

[0053] In summary, the pressure switch monitoring device provided by the present invention utilizes a protective shell with a closed inner cavity to protect the magnet, so that the magnet of the pressure switch monitoring device can be dustproof and waterproof during long-term use and avoid the adverse effects of harsh external conditions; in addition, the upper sleeve and the lower sleeve are threadedly connected to form a sleeve to protect the device, and the inner cavity thereof has air pressure so that when the device is submerged in water, water will not enter the cavity of the sleeve, thereby preventing sludge, debris, etc. brought by the water flow from entering the interior of the device and causing the device to work abnormally. Different from the prior art method of using a sealing ring to seal and protect the device, which will fail due to elastic fatigue during long-term use, the present invention can effectively prevent the device from failing due to the failure of the device shell seal during long-term use, resulting in water, sludge, debris, etc. entering the interior of the device, causing the device to fail and unable to work normally.

[0054] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A pressure switch monitoring device, characterized in that: It includes a pressure rod, a sleeve, a rod body, a protective shell, a magnet, a reed switch and a spring; The pressure rod is detachably mounted on the top of the sleeve, the sleeve is sleeved on the outer surface of the rod body, the protective shell is mounted on the cavity surface of the sleeve, the magnet is mounted on the inner shell wall of the protective shell, the reed switch is mounted in the cavity of the rod body, the reed switch passes through the bottom of the rod body through a signal line for connection with the monitoring device, and the spring is mounted on the outer surface of the rod body; Wherein, the position of the magnet is higher than the position of the reed switch; The pressure rod is a travel indicator rod; The travel indicating rod comprises a travel indicating rod cap, a flexible pressure rod and a locking head; The stroke indicating rod cap is installed on the top of the flexible pressure rod; wherein the outer surface of the stroke indicating rod cap has a stroke scale mark; The flexible pressure rod is fixed to the top of the sleeve through the locking head; The reed switch adjusts its installation position in the cavity of the rod body up and down according to a preset stroke; the reed switch includes an upper reed leaf and a lower reed leaf; the upper reed leaf and the lower reed leaf are in a non-touching state in an initial state, and when the protective shell descends along the axis of the rod body to a horizontal position overlapping with the top of the upper reed leaf and the lower reed leaf, the magnet uses magnetic force to cause the upper reed leaf and the lower reed leaf to be adsorbed to form a closed contact, so that the upper reed leaf and the lower reed leaf become in a closed state.

2. The pressure switch monitoring device according to claim 1, characterized in that: The travel indicator rod also includes a support screw; The support screw is nested at the bottom of the flexible pressure rod.

3. The pressure switch monitoring device according to claim 2, characterized in that: The pressure switch monitoring device also includes a spring support rod and a rod body mounting bracket; The spring support rod is installed at the bottom of the spring; The rod body mounting bracket is mounted on both sides of the sleeve; wherein the rod body mounting bracket is provided with a mounting hole.

4. The pressure switch monitoring device according to claim 3, characterized in that: The casing comprises an upper casing and a lower casing; The upper sleeve and the lower sleeve are connected by threads to form the sleeve.

5. The pressure switch monitoring device according to claim 4, characterized in that: The upper spring piece is connected to the monitoring device through a first signal line passing through the bottom of the rod body, and the lower spring piece is connected to the monitoring device through a second signal line passing through the bottom of the rod body.

6. The pressure switch monitoring device according to claim 5, characterized in that: The magnet is an annular magnetic ring; The protective shell is an annular shell, and the annular magnetic ring is installed on the inner shell wall of the annular shell.

7. The pressure switch monitoring device according to claim 6, characterized in that: The spring is a conical spring.

8. The pressure switch monitoring device according to claim 7, characterized in that: The cavity of the rod body includes a filling material for protecting the reed switch and the signal line; Wherein, the filling material is epoxy resin potting glue, silica gel or glass glue.

9. The pressure switch monitoring device according to claim 8, characterized in that: The rod body is made of stainless steel or engineering plastics; The material of the protective shell is stainless steel or engineering plastic.

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