Switch control electric cabinet for water ring vacuum pump

Abstract

The utility model relates to a switch control electric cabinet for a water ring vacuum pump, the switch control electric cabinet comprises a cabinet body and ventilation openings formed in the side walls of the cabinet body, the ventilation openings are formed in the two opposite side walls of the cabinet body, one ventilation opening is located at the upper part, and the other ventilation opening is located at the lower part; a dustproof net is arranged at the ventilation opening in the upper portion of the box body, a moisture absorption box and an exhaust fan are arranged at the ventilation opening in the lower portion of the box body, and the exhaust fan is used for exhausting moist air in the box body to the moisture absorption box and the ventilation opening where the moisture absorption box is located. Moisture in the box body can be accelerated to surge into the moisture absorption box through the exhaust fan, then the moisture is discharged out of the box body from the ventilation opening in the lower portion, the moisture absorption box rapidly adsorbs the moisture in the box body, the humidity in the box body can be more effectively reduced, and therefore normal and stable work of all electrical elements in the box body can be guaranteed as much as possible.

Description

Technical Field

[0001] This application relates to the technical field of control boxes, and in particular to a switch control electrical control box for a water ring vacuum pump. Background Technology

[0002] The control box of a water ring vacuum pump is an electrical control device specifically designed for water ring vacuum pumps. It is responsible for controlling and monitoring the pump's start-up, shutdown, operating status, and related parameters. It contains numerous electrical components that play a crucial role in the normal and stable operation of the water ring vacuum pump. These components include, but are not limited to, switches and control buttons, contactors, relays, protection circuits, controllers, displays, and communication interfaces.

[0003] Chinese patent application number CN207817440U, in the related technology, proposes a switch control electrical control box for a water ring vacuum pump, including at least two control modules. Each control module includes a water supply solenoid valve and a pneumatic switch valve. Each control module is equipped with a device control circuit and a signal transmission circuit. The water supply solenoid valve control circuit includes a level switch, the contacts of which are connected to the power supply circuit of the water supply solenoid valve. The pneumatic switch valve control circuit includes a pressure switch, which detects the inside of the gas pipeline. The contacts of the pressure switch are connected to the power supply circuit of the pneumatic switch valve. One end of the signal transmission circuit in each control module is connected to the contacts of the automatic loop switch of the device control circuit. The other end of the signal transmission circuits in all control modules are connected to the control system. The control system switches the working state of different control modules and connects the control modules.

[0004] The aforementioned technologies have the following drawbacks: the electrical components inside the control box play a crucial role in the continuous and stable operation of the water ring vacuum pump without stopping. However, in order to ensure heat dissipation, the control box is usually equipped with ventilation openings, which makes it easy for dust and moisture to enter the control box. In particular, moisture can cause irreversible damage to the working condition and service life of the electrical components inside the control box. Therefore, it is necessary to improve the moisture resistance of the control box. Utility Model Content

[0005] To improve the moisture resistance of the control box, this application provides a switch control electrical control box for a water ring vacuum pump.

[0006] The switch control electrical control box for a water ring vacuum pump provided in this application adopts the following technical solution:

[0007] A switch control electrical control box for a water ring vacuum pump includes a box body and ventilation openings on the side walls of the box body. The ventilation openings are provided on two opposite side walls of the box body, with one ventilation opening located at the top and the other at the bottom. A dustproof net is provided at the upper ventilation opening of the box body, and a moisture absorption box and an exhaust fan are provided at the lower ventilation opening of the box body. The exhaust fan is used to exhaust humid air inside the box body to the moisture absorption box and the ventilation opening.

[0008] Furthermore, the moisture-absorbing box is filled with a layer of silica gel desiccant, and the moisture-absorbing box is provided with an indicator mechanism to indicate that the moisture absorption capacity of the silica gel desiccant layer has reached its limit and needs to be replaced.

[0009] Furthermore, the indicator component includes a baffle disposed inside the moisture absorption box. The silica gel desiccant layer is disposed on one side of the baffle and an elastic element is disposed on the other side. An indicator plate is fixedly attached to one side of the baffle and adheres to the inner wall of the moisture absorption box. An indicator groove for revealing a partial position of the indicator plate is provided on the side wall of the moisture absorption box near the indicator plate. The indicator plate is provided with normal markings and abnormal markings.

[0010] When the silica gel desiccant layer absorbs moisture and expands to its limit, it pushes the baffle to move closer to the elastic element and makes the abnormal mark visible in the indicator groove.

[0011] Furthermore, two parallel locking strips are fixedly connected to the side wall of the moisture-absorbing box where the indicator groove is provided. The gap between the locking strips and the inner wall of the moisture-absorbing box is adapted to the thickness of the indicator plate. The indicator plate is slidably disposed in the gap between the two locking strips and the inner wall of the moisture-absorbing box.

[0012] Furthermore, the indicator plate is larger than the indicator slot, and the indicator plate closes the indicator slot regardless of whether the normal or abnormal indicator on the indicator plate is exposed in the indicator slot.

[0013] Furthermore, the moisture-absorbing box can be detachably installed on the control box.

[0014] Furthermore, a bracket is fixed to the inner wall of the control box at the lower vent, the exhaust fan is installed on the side of the bracket away from the vent, and the top of the bracket has a mounting opening for inserting the moisture-absorbing box.

[0015] In summary, the beneficial technical effects of this application are as follows:

[0016] Since moisture tends to be concentrated in the lower part of the enclosure, the moisture-absorbing box located at the bottom vent can effectively absorb moisture inside the enclosure, thus controlling the humidity to a certain extent. When the humidity inside the enclosure is high, the exhaust fan can be activated. The exhaust fan accelerates the movement of moisture into the moisture-absorbing box, which is then exhausted from the enclosure through the bottom vent. The moisture-absorbing box absorbs moisture quickly, effectively reducing the humidity inside the enclosure and ensuring the normal and stable operation of the electrical components inside the enclosure as much as possible. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the overall structure of an embodiment of this application;

[0018] Figure 2 yes Figure 1 A magnified view of part A in the diagram.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Enclosure; 11. Ventilation opening; 12. Dustproof screen; 13. Bracket; 131. Mounting port;

[0021] 2. Moisture absorption box; 21. Silica gel desiccant layer; 22. Indicator slot; 23. Locking strip;

[0022] 3. Exhaust fan;

[0023] 41. Baffle; 42. Elastic element; 43. Indicator plate; 431. Normal indicator; 432. Abnormal indicator. Detailed Implementation

[0024] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] This application discloses a switch-controlled electrical control box for a water ring vacuum pump. (Refer to...) Figure 1 It includes a box body 1 and a vent 11 opened on the side wall of the box body 1. Both opposite side walls of the box body 1 are provided with vents 11, with one vent 11 located at the top and the other at the bottom. The box body 1 is provided with a dustproof net 12 at the vent 11 located at the top, and a moisture absorption box 2 and an exhaust fan 3 are provided at the vent 11 located at the bottom. The exhaust fan 3 is used to exhaust the humid air inside the box body 1 to the moisture absorption box 2 and the vent 11 where it is located.

[0026] With this setup, the moisture-absorbing box 2, located at the lower ventilation opening 11, can effectively absorb the moisture inside the box 1, as moisture tends to be heavier and more concentrated in the lower part of the box 1. This can control the humidity inside the box 1 to a certain extent. When the humidity inside the box 1 is high, the exhaust fan 3 can be activated. The exhaust fan 3 can accelerate the flow of moisture inside the box 1 into the moisture-absorbing box 2, and then exhaust it from the lower ventilation opening 11. The moisture-absorbing box 2 absorbs the moisture inside the box 1 relatively quickly, which can more effectively reduce the humidity inside the box 1, thereby ensuring the normal and stable operation of the electrical components inside the box 1 as much as possible.

[0027] In a specific configuration, the moisture-absorbing box 2 is filled with a silica gel desiccant layer 21. The moisture-absorbing box 2 is equipped with an indicator mechanism to indicate that the moisture absorption capacity of the silica gel desiccant layer 21 has reached its limit and needs to be replaced. The indicator assembly includes a baffle 41 disposed inside the moisture-absorbing box 2. The silica gel desiccant layer 21 is disposed on one side of the baffle 41 and an elastic element 42 is disposed on the other side. An indicator plate 43 is fixed to one side of the baffle 41 and adheres to the inner wall of the moisture-absorbing box 2. An indicator groove 22 is opened on the side wall of the moisture-absorbing box 2 near the indicator plate 43 to reveal a partial position of the indicator plate 43. The indicator plate 43 is provided with a normal mark 431 and an abnormal mark 432.

[0028] When the silica gel desiccant layer 21 absorbs moisture and expands to its limit, it pushes the baffle 41 to move closer to the elastic member 42 and makes the abnormal mark 432 appear in the indicator groove 22.

[0029] The normal label 431 and the subnormal label 431 can be one or a combination of text labels, graphic labels, color labels, etc. For example, red can represent the abnormal label 432 and green can represent the normal label 431, or the corresponding text information can be marked in the normal label 431 and the subnormal label 431. This is used to indicate whether the silica gel desiccant layer 21 in the moisture absorption box 2 is in a normal moisture absorption state or in a state where it has absorbed moisture and expanded to the limit and can no longer absorb moisture, so that the operator can replace the moisture absorption box 2 or the silica gel desiccant layer 21 in a timely manner.

[0030] Therefore, when the moisture-absorbing box 2 is working normally, the silica gel desiccant layer 21 only expands slightly after absorbing moisture, causing the baffle 41 to move upward a certain position. At this time, it is insufficient to make the abnormal mark 432 on the indicator plate 43 visible in the indicator groove 22, so there is no need to deal with the moisture-absorbing box 2. However, when the silica gel desiccant layer 21 reaches its moisture absorption limit, the silica gel desiccant layer 21 expands extremely and pushes the baffle 41 upward, causing the indicator plate 43 to move upward with the baffle 41 by a large displacement. At this time, the abnormal mark 432 on the indicator plate 43 is visible in the indicator groove 22, which can remind the operator that it needs to be replaced in time. This can avoid the defect of excessive humidity in the box 1 due to the failure of the moisture-absorbing box 2 to be replaced in time.

[0031] Furthermore, two parallel locking strips 23 are fixedly attached to the side wall of the moisture absorption box 2, where the indicator groove 22 is provided. The gap between the locking strips 23 and the inner wall of the moisture absorption box 2 is adapted to the thickness of the indicator plate 43. The indicator plate 43 is slidably disposed in the gap between the two locking strips 23 and the inner wall of the moisture absorption box 2. Moreover, the size of the indicator plate 43 is larger than the size of the indicator groove 22, and the indicator plate 43 closes the indicator groove 22 regardless of whether the normal mark 431 or the abnormal mark 432 on the indicator plate 43 is exposed in the indicator groove 22.

[0032] In this way, by embedding the indicator plate 43 between the two clips 23 and making the indicator plate 43 close to the inner wall of the moisture absorption box 2, the stability of the movement of the indicator plate 43 and the baffle 41 in the moisture absorption box 2 can be improved, so as to ensure that the silica gel desiccant can continue to push the baffle 41 and the indicator plate 43 to move together after absorbing moisture and expanding, thus ensuring that the indicator plate 43 provides an effective prompting effect.

[0033] In addition, the moisture-absorbing box 2 can be detachably installed on the control box. Specifically, a bracket 13 is fixed to the inner wall of the control box at the lower vent 11, and the exhaust fan 3 is installed on the side of the bracket 13 away from the vent 11. The top of the bracket 13 has a reserved installation port 131 for the moisture-absorbing box 2 to be inserted. This greatly facilitates the replacement of the moisture-absorbing box 2.

[0034] The implementation principle of the switch-controlled electrical control box for a water ring vacuum pump in this embodiment of the application is as follows:

[0035] Since moisture is mostly concentrated in the lower part of the cabinet 1, the moisture-absorbing box 2 located at the lower vent 11 can effectively absorb the moisture inside the cabinet 1, which can control the humidity inside the cabinet 1 to a certain extent. When the humidity inside the cabinet 1 is high, the exhaust fan 3 can be turned on. The exhaust fan 3 can accelerate the flow of moisture inside the cabinet 1 into the moisture-absorbing box 2, and then exhaust the moisture from the cabinet 1 through the lower vent 11. The moisture-absorbing box 2 absorbs the moisture inside the cabinet 1 more quickly, which can more effectively reduce the humidity inside the cabinet 1, thereby ensuring the normal and stable operation of the electrical components inside the cabinet 1 as much as possible.

[0036] Furthermore, when the moisture-absorbing box 2 is working normally, the silica gel desiccant layer 21 only expands slightly after absorbing moisture, causing the baffle 41 to move upward a certain position. At this time, it is insufficient to make the abnormal mark 432 on the indicator plate 43 visible in the indicator groove 22, so there is no need to deal with the moisture-absorbing box 2. However, when the silica gel desiccant layer 21 reaches its moisture absorption limit, the silica gel desiccant layer 21 expands extremely and pushes the baffle 41 upward, causing the indicator plate 43 to move upward by a large displacement. At this time, the abnormal mark 432 on the indicator plate 43 is visible in the indicator groove 22, which can remind the operator that it needs to be replaced in time. This can avoid the defect of excessive humidity inside the box 1 due to the failure of the moisture-absorbing box 2 to be detected and replaced in time.

[0037] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A switch control electric control box for water ring vacuum pump, comprising a box body (1) and a ventilation opening (11) opened on the side wall of the box body (1), characterized in that, The box (1) is provided with the ventilation openings (11) on two opposite side walls, one of which is located at the upper side and the other is located at the lower side, the box (1) is provided with a dust screen (12) at the ventilation opening (11) located at the upper side, the box (1) is provided with a moisture absorption box (2) and an exhaust fan (3) at the ventilation opening (11) located at the lower side, the exhaust fan (3) is used for discharging the humid air in the box (1) to the moisture absorption box (2) and the ventilation opening (11).

2. The switch control electric control box for a water ring vacuum pump according to claim 1, characterized in that, The moisture absorption box (2) is filled with a silica gel desiccant layer (21), and the moisture absorption box (2) is provided with an indicating mechanism for indicating that the silica gel desiccant layer (21) reaches the limit of moisture absorption capacity and needs to be replaced.

3. The switch control electric control box for a water ring vacuum pump according to claim 2, characterized in that, The indicating mechanism includes a baffle (41) arranged in the moisture absorption box (2), one side of the baffle (41) is provided with the silica gel desiccant layer (21), and the other side is provided with an elastic member (42), one side of the baffle (41) is fixedly connected with an indicating plate (43) attached to the inner wall of the moisture absorption box (2), the side wall of the moisture absorption box (2) close to the indicating plate (43) is provided with an indicating groove (22) for exposing the local position of the indicating plate (43), and the indicating plate (43) is provided with a normal mark (431) and an abnormal mark (432). When the silica gel desiccant layer (21) is expanded to the limit, it pushes the baffle (41) to move towards the elastic member (42) and makes the abnormal mark (432) exposed in the indicating groove (22).

4. The switch control electric control box for a water ring vacuum pump according to claim 3, characterized in that, The moisture absorption box (2) is fixedly connected with two parallel arranged clamping strips (23) on the side wall provided with the indicating groove (22), the gap between the clamping strips (23) and the inner wall of the moisture absorption box (2) is matched with the thickness of the indicating plate (43), and the indicating plate (43) is slidingly arranged in the gap between the two clamping strips (23) and the inner wall of the moisture absorption box (2).

5. The switch control electric control box for a water ring vacuum pump according to claim 3, characterized in that, The size of the indicating plate (43) is larger than the size of the indicating groove (22), and no matter the normal mark (431) or the abnormal mark (432) on the indicating plate (43) is exposed in the indicating groove (22), the indicating plate (43) closes the indicating groove (22).

6. The switch control electric control box for a water ring vacuum pump according to claim 1, characterized in that, The moisture absorption box (2) can be detachably installed on the box (1).

7. The switch control electric control box for a water ring vacuum pump according to claim 6, characterized in that, The inner wall of the box (1) is fixedly connected with a bracket (13) at the ventilation opening (11) located at the lower side, the exhaust fan (3) is installed on the side of the bracket (13) away from the ventilation opening (11), and the bracket (13) is provided with a mounting opening (131) at the top for inserting the moisture absorption box (2).

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