A dust removal, water collection and drainage system applied to a fully automatic pneumatic control device

Abstract

The present invention relates to a dust removal, water collection and drainage system applied to a fully automatic pneumatic control device, which includes a housing, a side cavity mechanism arranged along the inner circumference of the housing, a ventilation dust removal system and a water collection and drainage system arranged in the side cavity mechanism; the side cavity mechanism is communicated with an atmosphere pipeline interface, an air inlet and a drainage interface; the ventilation dust removal system is arranged between the communication paths of the atmosphere pipeline interface and the air inlet, and the water collection and drainage system is arranged between the communication paths of the atmosphere pipeline interface and the drainage interface; the present invention integrates the dust removal, water collection and drainage system with the fully automatic pneumatic control device, making the overall structure more compact, reducing the types and usage quantities of parts, having higher reliability, and at the same time, based on the active dust removal and water collection and drainage technologies, as well as the structural design of each side cavity inside the housing, adopting a dual working mode combining the two to maximize the efficiency of filtration, water collection and drainage, and effectively removing dust and condensed water vapor in the air.

Description

Technical Field

[0001] The present invention relates to the technical field of pneumatic controllers applied to a vacuum sewage continuous collection, temporary storage and periodic transportation system, wherein the pneumatic controller is used to connect with a vacuum sewage discharge valve and control the operation of the vacuum sewage discharge valve, and has functions such as ventilation, water collection, drainage and vacuum source voltage stabilization. The present invention particularly relates to a dust removal, water collection and drainage system applied to a full-automatic pneumatic control device. Background Art

[0002] In the technical field of vacuum domestic sewage collection, transportation and treatment, a vacuum sewage continuous collection, temporary storage and periodic transportation system, namely a vacuum well, plays a crucial role. Its characteristics are as follows:

[0003] (1) It has a temporary sewage collection tank (or sewage collection chamber, sewage collection area) that uses a vacuum sewage discharge valve for periodic sewage discharge, and can transport the sewage in its sewage collection tank to the downstream vacuum collection pipeline network.

[0004] (2) A control device applied to a differential pressure drive control method, namely a pneumatic controller.

[0005] (3) Its important components include a vacuum sewage discharge valve, a sewage tank, an equipment tank, a manhole cover, a manual ball valve, a gravity sewage inlet pipeline, a sewage discharge pipeline connecting to the downstream vacuum collection pipeline network, and a sewage suction pipeline. Among them, the relevant control equipment includes an input-output interface, an energy unit, a power unit, an execution unit and a control unit. The input-output interface has an operating element to be manually operated by the user, as well as an input pipeline and an output pipeline for the device to connect with other peripheral devices or devices; the energy unit has various units that connect the external input or output interface with the internal input-output pipeline and the internal energy flow of the units; the power unit has components that transform the energy flow in the energy unit into a power flow; the execution unit is used to switch between different input energy flows from the energy unit and the output interface in the input-output interface; the control unit is used to indirectly adjust the power unit to realize the components and methods for adjusting the execution unit, or directly adjust the components and methods of the execution unit.

[0006] Since vacuum sewage collection is the most advanced technology, a typical technical solution for realizing its application scenario is to use a temporary sewage storage tank, which has an inlet connected to the sewage outlet of the building, a sewage discharge suction inlet connected to the vacuum sewage pipeline, and a vacuum sewage discharge valve connecting the sewage discharge suction inlet and the vacuum sewage pipeline. The vacuum sewage discharge valve has a control system or device. Its basic operation process is that when the sewage level in the storage tank reaches the first preset value, the pneumatic controller applies a vacuum force to the vacuum sewage discharge valve to suck and drain the sewage until the sewage level in the sewage tank drops to another preset value, at which point the pneumatic controller closes the vacuum sewage discharge valve. Therefore, we define this technical solution as a vacuum sewage continuous collection, temporary storage, and periodic transportation system.

[0007] In the vacuum sewage continuous collection, temporary storage, and periodic transportation system, the pneumatic controller is used to connect with the vacuum sewage discharge valve to control the opening and closing of the vacuum sewage discharge valve. To ensure its working stability, efficiency, and reliability, R & D personnel continuously start from the functions of the vacuum sewage discharge valve such as ventilation, dust removal, water collection, drainage, and vacuum source voltage stabilization. The known technical solutions for realizing the functions of ventilation, dust removal, water collection, and drainage are split-type filtration and water collection and drainage devices, that is, the device is two devices independent of the pneumatic controller and is connected by an air pipe; there are mainly two structural forms: First, a negative pressure drainage technical solution combined with the lower housing of the vacuum sewage discharge valve, and the working principle and structural design can refer to the US patent with the patent number US4171853; Second, a negative pressure drainage technical solution independent of the lower housing of the vacuum sewage discharge valve, and the working principle and structural design can refer to the US patent with the patent number US4171853, and the actual application can refer to the US patent with the patent number US5570715. Considering the existing technologies, its disadvantages are as follows:

[0008] (1) Sheet metal parts are prone to corrosion, poor sealing, and air leakage:

[0009] Referring to the US patent with the patent number US4171853, when the air control controller and the vacuum sewage discharge valve change from the open state to the closed state, the accumulated water in the exhaust chamber 45 where the lower housing 14 of the vacuum sewage discharge valve is located will quickly enter the water collector 50 under the action of the reset impact force of the valve core 30. Its high-speed airflow will spray the accumulated water in the water collector 50 to the pipe orifice, and these pipe orifices are connected to the air inlet of the air control controller and the air control input port of the vacuum sewage discharge valve, causing the accumulated water to enter the valve body content and resulting in the premature failure of the device, especially the metal flipping component and the corrugated diaphragm component;

[0010] (2) Poor air filtration effect:

[0011] Referring to the US Patent No. US5570715, during the operation of the device, the churning accumulated water will wet the filter element, affecting the filtration effect and increasing the resistance to air entry. When dust in the air enters the device, it will adhere to the sealing part, thus affecting the sealing performance of the device.

[0012] (3) The accumulated water inside the controller cannot be effectively discharged:

[0013] The corrugated diaphragm assembly inside the pneumatic controller is easily affected by damp dust, which affects the sealing effect and further affects the function of the controller. Although an external water collection and drainage device is added, that is, an independent active dust collection, water collection and drainage structure and technology are adopted, there is a problem that water flow impacts and enters the control chamber, especially at the moment when the vacuum sewage valve is switched on and off. Due to the lack of an effective active water collection and drainage structure design in the internal chamber of the controller, condensed water is generated when the air inside the chamber undergoes violent state changes such as impact and collision. These condensed waters affect the action efficiency of the controller and also affect the realization of the controller's function.

[0014] Since there are two sources of condensed water. One is the condensed water condensed at the air inlet of the controller when the dry and hot air from the ground enters the dark, wet and cold vacuum well equipment chamber. The other is the condensed water generated by the violent state changes such as impact and collision of the air in the internal chamber of the controller. For the latter, we handle it at the structural design level of the controller to achieve active water collection and drainage, which is the first hydrophobic function. For the former, we can only adopt active technology to remove the condensed water in the air in time, which is another hydrophobic function. The two cooperate with each other, complement each other and are indispensable. The latter ensures that when the air enters the controller, it is as dry as possible.

[0015] (4) Poor water collection and drainage effect in the pneumatic controller:

[0016] In the prior art, the water collection and drainage adopt a single-chamber structure and are designed based on the principle of air flow impact condensation, but the water collection effect of a single chamber is not good.

[0017] (5) The drainage pipeline is easily affected by the vacuum pressure fluctuation:

[0018] The drainage pipeline is easily affected by the vacuum pressure fluctuation, thus there is a problem that water flow impacts and enters the control chamber, especially at the moment when the vacuum sewage valve is switched on and off. When the sewage enters the control chamber of the pneumatic controller, it will seriously affect the working sensitivity of the pneumatic controller and greatly reduce its service life.

[0019] (6) Single drainage path of the drainage pipeline:

[0020] The drain pipe can only drain water from the lower chamber of the vacuum sewage valve and cannot be flexibly integrated with other structures, such as discharging to the vacuum well equipment chamber, and then the condensate water in the equipment chamber is discharged to the sewage tank through the ventilation and pressure relief device;

[0021] Therefore, in view of the existence of the above-mentioned drawbacks, the present invention has developed a dust removal, water collection and drainage system applied to a fully automatic pneumatic control device to solve the problems existing in the prior art. After retrieval, no technical solutions identical or similar to the present invention have been found. Summary of the Invention

[0022] The object of the present invention is to provide a dust removal, water collection and drainage system applied to a fully automatic pneumatic control device to solve the problems in the prior art that when air is introduced, the air cannot be filtered and purified, resulting in a large accumulation and adhesion of impurities, affecting the high efficiency and reliability of use, and at the same time solving the problems of poor water collection and drainage effects in the device.

[0023] The technical solution of the present invention is: a dust removal, water collection and drainage system applied to a fully automatic pneumatic control device, including a housing, a side chamber mechanism arranged along the circumferential direction inside the housing, a ventilation and dust removal system and a water collection and drainage system arranged in the side chamber mechanism; the side chamber mechanism is communicated with an atmosphere pipeline interface, an air inlet and a drainage interface; the ventilation and dust removal system is arranged between the communication paths of the atmosphere pipeline interface and the air inlet, and the water collection and drainage system is arranged between the communication paths of the atmosphere pipeline interface and the drainage interface.

[0024] Preferably, the housing includes an upper housing, a middle housing and a lower housing, and the middle housing includes a first middle housing, a second middle housing, a third middle housing, a fourth middle housing and a fifth middle housing arranged in sequence from top to bottom; the side chamber mechanism includes a first side chamber, a second side chamber, a third side chamber, a fourth side chamber and a fifth side chamber correspondingly arranged in the first middle housing, the second middle housing, the third middle housing, the fourth middle housing and the fifth middle housing and connected in sequence; the atmosphere pipeline interface is arranged on the side wall of the housing and communicated with the fourth side chamber; the air inlet is communicated with the first side chamber and extends to the inside of the housing; the drainage interface is arranged on the lower housing and communicated with the fifth side chamber.

[0025] Preferably, three sets of the first side cavity, the second side cavity, the third side cavity, the fourth side cavity and the fifth side cavity are arranged in alignment along the circumferential direction of the housing. The three first side cavities are arranged at the lower end of the first middle housing, and the side walls are sequentially communicated. One of the first side cavities is communicated with the air inlet. The three second side cavities are arranged at the lower end of the second middle housing. The second side cavity far from the air inlet is communicated with the upper first side cavity, and the side walls of the two second side cavities close to the air inlet are communicated. The three third side cavities are arranged at the lower end of the third middle housing, and a first ventilation hole and a plurality of first diversion holes are correspondingly arranged on the upper end face. The plurality of first diversion holes are annularly distributed on the side of the first ventilation hole. The three fourth side cavities are arranged at the lower end of the fourth middle housing, and a second ventilation hole and a plurality of second diversion holes are correspondingly arranged on the upper end face. One of the fourth side cavities is communicated with the atmosphere pipeline interface. The three fifth side cavities are arranged at the lower end of the fifth middle housing, and coaxial inner holes are respectively formed on the upper end faces, and the side edges of the lower ends are sequentially communicated. The drain interface is arranged at the lower end of the lower housing and is communicated with the lower end of the middle fifth side cavity.

[0026] Preferably, the fourth side cavity is divided into a ventilation cavity and a water collection cavity. The ventilation cavity is communicated with the second ventilation hole, and the water collection cavity is communicated with the second diversion hole. The ventilation cavity in the fourth side cavity biased towards the air inlet side in the horizontal direction is communicated with the atmosphere pipeline interface, and the ventilation cavities in the other two fourth side cavities are communicated and a sealing plate is nested on the lower end face.

[0027] Preferably, the ventilation and dust removal system includes a first communication flow channel and a plurality of filter blocks; the first communication flow channel is composed of the atmosphere pipeline interface, a filter flow channel connected in an S shape, the first side cavity and the air inlet. The filter flow channel includes a ventilation cavity communicated with the atmosphere pipeline interface, the third side cavity and the second side cavity on the same side, the second side cavity and the third side cavity in the middle, the ventilation cavity, the third side cavity and the second side cavity on the side far from the atmosphere pipeline interface. The plurality of filter blocks are respectively arranged inside the third side cavity.

[0028] Preferably, the filter block is selected from one of sponge or steel wool.

[0029] Preferably, the water collection and drainage system includes a second communication flow channel and a plurality of float assemblies; the second communication flow channel includes the first diversion hole, the third side cavity, the second diversion hole, the water collection cavity, the fifth side cavity and the drain interface; the plurality of float assemblies are respectively arranged in the fifth side cavity and the inner hole.

[0030] Preferably, the float assembly includes a sealing seat and a float valve arranged coaxially. The sealing seat is nested and fitted in the inner hole, and a first drainage hole is arranged in the middle. The float valve is arranged in the fifth side cavity and includes a valve seat fixed at the lower end of the fifth side cavity and a float body arranged above the valve seat. A second drainage hole is arranged in the middle of the valve seat, a current-limiting column inserted and fitted in the second drainage hole is arranged on the lower end face of the float body, and a sealing plug for forming a seal with the sealing seat after floating upward is arranged on the upper end face.

[0031] Preferably, a plurality of limiting blocks are evenly arranged on the side wall of the float body, and the side walls of the plurality of limiting blocks are attached to the inner wall of the fifth side cavity.

[0032] Compared with the prior art, the advantages of the present invention are as follows:

[0033] (1) The present invention integrates the dust removal, water collection and drainage systems with the fully automatic pneumatic control device, rationally utilizes the limited space and volume around the fully automatic pneumatic control device, makes the overall structure more compact, reduces the types and usage quantities of parts, has higher reliability. This embedded setting method does not require independent pipelines for connection, and has high installation and maintenance efficiency in the later stage.

[0034] (2) Based on the active dust removal and water collection and drainage technologies, and the structural design of each side cavity inside the housing, the combined dual working mode of the two is adopted to maximize the filtering, water collection and drainage effects and efficiency, effectively remove dust and condensed water vapor in the air, and avoid the paralysis of the entire vacuum sewage discharge system.

[0035] (3) Regarding dust removal, a three-stage dust removal technology is adopted. Through the design of the first communication flow channel, the air circulation path is increased. During the air flow, three-stage filtration is achieved through the filter block. At this time, a large amount of dust and water vapor in the air will adhere or condense on the filter block, greatly improving the air purification efficiency. Regarding water collection and drainage, the water vapor condensed on the filter block will flow downward along the side of the filter block under the action of its own gravity, and a float assembly is used for automatic drainage, so as to effectively discharge the condensed water vapor inside the device, and the system has high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will be further described below with reference to the drawings and embodiments:

[0037] Figure 1 is a schematic structural diagram of a dust removal, water collection and drainage system applied to a fully automatic pneumatic control device according to the present invention;

[0038] Figure 2 is an exploded sectional view of the housing according to the present invention;

[0039] Figure 3Structural sectional exploded view of the first middle housing, the second middle housing and the third middle housing of the present invention;

[0040] Figure 4 Structural sectional exploded view of the fourth middle housing of the present invention;

[0041] Figure 5 Structural sectional exploded view of the fifth middle housing and the lower housing of the present invention;

[0042] Figure 6 Structural diagram and air flow line diagram of the ventilation and dust removal system of the present invention;

[0043] Figure 7 Structural diagram and drainage flow line diagram of the water collection and drainage system of the present invention;

[0044] Figure 8 Sectional structural diagram of the float assembly of the present invention;

[0045] Figure 9 Structural schematic diagram of the full-automatic pneumatic control device related to the present invention.

[0046] Wherein: 1. Housing;

[0047] 11. Upper housing, 12. Middle housing, 13. Lower housing, 14. Atmosphere pipeline interface, 15. Air inlet, 16. Drainage interface, 17. Vacuum sewage valve air interface;

[0048] 121. First middle housing, 122. Second middle housing, 123. Third middle housing, 124. Fourth middle housing, 125. Fifth middle housing;

[0049] 2. Side cavity mechanism;

[0050] 21. First side cavity, 22. Second side cavity, 23. Third side cavity, 24. Fourth side cavity, 25. Fifth side cavity;

[0051] 231. First ventilation hole, 232. First diversion hole;

[0052] 241. Ventilation cavity, 242. Water collection cavity, 243. Sealing plate, 244. Second ventilation hole, 245. Second diversion hole;

[0053] 251. Inner hole;

[0054] 3. Ventilation and dust removal system;

[0055] 31. Filter block;

[0056] 4. Water collection and drainage system;

[0057] 41. Float assembly;

[0058] 411. Sealing seat, 412. First drainage hole, 413. Valve seat, 414. Second drainage hole, 415. Floating ball body, 416. Flow limiting column, 417. Sealing plug, 418. Limit block. Specific embodiments

[0059] The following combines specific embodiments to further elaborate on the content of the present invention:

[0060] As Figure 1 shown, a dust removal, water collection and drainage system applied to a fully automatic pneumatic control device includes a housing 1, a side cavity mechanism 2 arranged along the circumferential direction inside the housing 1, a ventilation and dust removal system 3 arranged in the side cavity mechanism 2, and a water collection and drainage system 4; wherein, the side cavity mechanism 2 is connected to an atmospheric pipeline interface 14, an air inlet 15 and a drainage interface 16; the ventilation and dust removal system 3 is arranged between the connection paths of the atmospheric pipeline interface 14 and the air inlet 15, and the water collection and drainage system 4 is arranged between the connection paths of the atmospheric pipeline interface 14 and the drainage interface 16.

[0061] As Figure 2 shown, the housing 1 includes an upper housing 11, a middle housing 12 and a lower housing 13 arranged in sequence from top to bottom. The upper housing 11, the middle housing 12 and the lower housing 13 are coaxially arranged and have the same outer diameter. The middle housing 12 includes a first middle housing 121, a second middle housing 122, a third middle housing 123, a fourth middle housing 124 and a fifth middle housing 125 arranged in sequence from top to bottom.

[0062] As Figure 2 shown, the side cavity mechanism 2 includes a first side cavity 21, a second side cavity 22, a third side cavity 23, a fourth side cavity 24 and a fifth side cavity 25 correspondingly arranged in the first middle housing 121, the second middle housing 122, the third middle housing 123, the fourth middle housing 124 and the fifth middle housing 125 and sequentially connected; three groups of the first side cavity 21, the second side cavity 22, the third side cavity 23, the fourth side cavity 24 and the fifth side cavity 25 are respectively arranged in alignment along the circumferential direction of the housing, and their arrangement methods are as follows:

[0063] As Figure 3 shown, the three first side cavities 21 are arc-shaped and distributed at the lower end of the first middle housing 121, and the side walls are sequentially connected. One of the first side cavities 21 is connected to the air inlet 15, and the air inlet 15 is used to extend into the housing to provide an air source for the operation of the fully automatic pneumatic control device. The first side cavity 21 on the same side is also connected to a vacuum sewage valve air interface 17 arranged on the side wall of the first middle housing 121, and this interface is used to connect to the vacuum sewage valve and can be blocked by a plug when not in use.

[0064] As Figure 3As shown in the figure, three second side cavities 22 are arc-shaped and distributed at the lower end of the second middle housing 122, and are respectively coaxially arranged with the three first side cavities 21. The second side cavity 22 far from the air inlet 15 is communicated with the upper first side cavity 21, and the side walls of the two second side cavities 22 close to the air inlet 15 are communicated with each other.

[0065] As Figure 3 shown in the figure, three third side cavities 23 are arc-shaped and distributed at the lower end of the third middle housing 123, and are respectively coaxially arranged with the three second side cavities 22. A first ventilation hole 231 and a plurality of first diversion holes 232 are correspondingly arranged on the upper end face. The first ventilation hole 231 is coaxially arranged with the corresponding third side cavity 23. The plurality of first diversion holes 232 are annularly distributed on the side of the first ventilation hole 231, and the upper end part is funnel-shaped to facilitate the liquid to smoothly enter the inside of the first diversion holes 232.

[0066] As Figure 4 shown in the figure, three fourth side cavities 24 are arc-shaped and distributed at the lower end of the fourth middle housing 124, and are respectively coaxially arranged with the three third side cavities 23. A second ventilation hole 244 and a plurality of second diversion holes 245 are correspondingly arranged on the upper end face. The second ventilation hole 244 is coaxially arranged with the corresponding fourth side cavity 24. The plurality of second diversion holes 245 are annularly distributed on the side of the second ventilation hole 244, and the upper end part is funnel-shaped; the inside of the fourth side cavity 24 is divided into a ventilation cavity 241 and a water collection cavity 242. The ventilation cavity 241 is communicated with the second ventilation hole 244, and the water collection cavity 242 is communicated with the second diversion holes 245. The ventilation cavity 241 in the fourth side cavity 24 biased towards the side where the air inlet 15 is located in the horizontal direction (i.e., the rightmost side in the figure) is communicated with the atmosphere pipeline interface 14, and the ventilation cavities 241 in the other two fourth side cavities 24 are communicated with each other and a sealing plate 243 is nested on the lower end face.

[0067] As Figure 5 shown in the figure, three fifth side cavities 25 are arranged at the lower end of the fifth middle housing 125, and inner holes 251 arranged coaxially are respectively opened on the upper end face, and the side edges of the lower end parts are sequentially communicated; the drain interface 16 is arranged at the lower end of the lower housing 13 and is communicated with the lower end of the middle fifth side cavity 25.

[0068] As Figure 6As shown in the figure, the ventilation and dust removal system 3 includes a first communication flow channel and several filter blocks 31; as shown by the dotted line in the figure, the first communication flow channel is composed of an atmospheric pipeline interface 14, a filter flow channel connected in an S shape, a first side cavity 21, and an air inlet 15. The filter flow channel includes a ventilation cavity 241 connected to the atmospheric pipeline interface 14, a third side cavity 23 and a second side cavity 22 on the same side, a second side cavity 22 and a third side cavity 23 in the middle position, a ventilation cavity 241 connected to the side far from the atmospheric pipeline interface 14, and a third side cavity 23 and a second side cavity 22 on the side far from the atmospheric pipeline interface 14; several filter blocks 31 are respectively arranged inside the third side cavity 23. The filter block 31 is selected from one of sponge or steel wool, and can be used to filter impurities in the air and condense water vapor in the air.

[0069] As Figure 7 shown in the figure, the water collection and drainage system 4 includes a second communication flow channel and several float assemblies 41; as shown by the dotted line in the figure, the second communication flow channel mainly includes a first diversion hole 232, a third side cavity 23, a second diversion hole 245, a water collection cavity 242, a fifth side cavity 25, and a drainage interface 16; several float assemblies 41 are respectively arranged in the fifth side cavity 25 and the inner hole 251, and include a sealing seat 411 and a float valve arranged coaxially. The sealing seat 411 is nested and fitted in the inner hole 251, and a first drainage hole 412 is arranged in the middle; the float valve is arranged in the fifth side cavity 25, and includes a valve seat 413 fixed at the lower end of the fifth side cavity 25 and a float body 415 arranged above the valve seat 413. As Figure 8 shown in the figure, a second drainage hole 414 is arranged in the middle of the valve seat 413. The three fifth side cavities 25 above the valve seat 413 are not connected to each other, and the three fifth side cavities 25 below the valve seat 413 are connected to each other; a current limiting column 416 inserted and fitted in the second drainage hole 414 is arranged on the lower end surface of the float body 415, and a sealing plug 417 used for forming a seal with the sealing seat 411 after floating upward is arranged on the upper end surface; at the same time, several limiting blocks 418 are uniformly arranged on the side wall of the float body 415, and the side walls of the several limiting blocks 418 are attached to the inner wall of the fifth side cavity 25, so that the float body 415 can move along the central axis direction during the up and down floating process without deviation.

[0070] As Figure 9 shown in the figure, it is a structural schematic diagram of the fully automatic pneumatic control device involved in the present invention. The left half is the main part of the fully automatic pneumatic control device during operation, and the right half is the dust removal, water collection, and drainage systems involved in the present invention. Now, in combination with the fully automatic pneumatic control device, the functions of relevant interfaces are briefly described:

[0071] Wherein: G01 is an input port for inputting air or negative pressure; G02 is an output port for outputting air or negative pressure and for connecting to the control port of the vacuum sewage valve; G03 is a vacuum pipeline interface for inputting negative pressure; G04 is an air inlet 15 for inputting air; G05 is an atmospheric pipeline interface 14 for introducing the atmosphere, which enters the air inlet 15 after being filtered by the filter block 31; G06 is an air interface of the vacuum sewage valve for inputting or outputting air and for connecting to the air port of the vacuum sewage valve; G07 is a drainage interface 16 for discharging the condensed water.

[0072] Since the air containing dust and water vapor enters the inside of the fully automatic pneumatic control device, the dust and water vapor will adhere to the sealing places inside the device after mixing, thereby reducing the sealing performance of the device, and further affecting the stability and reliability of the work. Therefore, the present invention designs a dust removal, water collection and drainage system applied to the fully automatic pneumatic control device. The specific dust removal principle of the air is as follows:

[0073] Combined with Figure 6 As shown, after the air enters from the atmospheric pipeline interface 14, it flows in an S shape along the dotted line in the figure, passes through three filter blocks 31 in sequence for filtering, and finally enters the first side cavity 21, so that the filtered air enters the air inlet 15. At this time, the dust and water vapor in the air will adhere and condense on the filter block 31; and during this process, the air mainly flows through the middle of the filter block 31, having little influence on the side of the filter block 31. At this time, it is to facilitate the condensed water vapor involved later to flow downward along the side.

[0074] The specific principles of water collection and drainage are as follows:

[0075] Combined with Figure 7 As shown, the water vapor mainly condensed on the filter block 31 flows downward along the side due to gravity. At the same time, a small amount of condensed water in the second side cavity 22 will also flow into the filter block 31 along the first diversion hole 232. The condensed water flows downward and enters the water collection cavity 242 after passing through the second diversion hole 245, and then sequentially enters the fifth side cavity 25 above the valve seat 413 along the corresponding first drainage hole 412 and is concentrated in the fifth side cavity 25. When the condensed water inside the fifth side cavity 25 gradually increases, the floating ball body 415 will float upward, so that the current limiting column 416 moves upward and disengages from the second drainage hole 414. At this time, the sealing plug 417 will block the lower end of the sealing seat 411. At the same time, the condensed water concentrated in the fifth side cavity 25 will flow to the drainage interface 16 along the fifth side cavity 25 below the valve seat 413 until it is discharged, realizing automatic drainage; when the condensed water in the fifth side cavity 25 is discharged, the floating ball body 415 will move downward under its own gravity until the condensed water increases and it floats upward again.

[0076] The above embodiments are only used to illustrate the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A dust removal, water collection and drainage system applied to a full-automatic pneumatic control device, characterized in that: it includes a housing, a side cavity mechanism arranged along the inner circumference of the housing, a ventilation dust removal system and a water collection and drainage system arranged in the side cavity mechanism; the side cavity mechanism is connected with an atmospheric pipeline interface, an air inlet and a drainage interface; the ventilation dust removal system is arranged between the communication paths of the atmospheric pipeline interface and the air inlet, and the water collection and drainage system is arranged between the communication paths of the atmospheric pipeline interface and the drainage interface; the housing includes an upper housing, a middle housing and a lower housing, the side cavity mechanism includes a first side cavity, a second side cavity, a third side cavity, a fourth side cavity and a fifth side cavity which are connected in sequence and are respectively arranged in three groups aligned along the circumference of the housing, and the middle housing includes a first middle housing, a second middle housing, a third middle housing, a fourth middle housing and a fifth middle housing arranged in sequence from top to bottom; the first side cavity, the second side cavity, the third side cavity, the fourth side cavity and the fifth side cavity are correspondingly arranged in the first middle housing, the second middle housing, the third middle housing, the fourth middle housing and the fifth middle housing; the atmospheric pipeline interface is arranged on the side wall of the housing and is connected with the fourth side cavity; the air inlet is connected with the first side cavity and extends into the housing; the drainage interface is arranged on the lower housing and is connected with the fifth side cavity; a first ventilation hole and a plurality of first diversion holes are correspondingly arranged on the upper end surface of the third side cavity, and the plurality of first diversion holes are annularly distributed on the side of the first ventilation hole; a second ventilation hole and a plurality of second diversion holes are correspondingly arranged on the upper end surface of the fourth side cavity; the fourth side cavity is divided into a ventilation cavity and a water collection cavity, the ventilation cavity is connected with the second ventilation hole, and the water collection cavity is connected with the second diversion hole; the ventilation cavity in the fourth side cavity biased towards the side where the air inlet is located in the horizontal direction is connected with the atmospheric pipeline interface, and the ventilation cavities in the other two fourth side cavities are connected and nested with a sealing plate at the lower end surface; the ventilation dust removal system includes a first communication flow channel and a plurality of filter blocks; the first communication flow channel is composed of an atmospheric pipeline interface, a filter flow channel connected in an S shape, a first side cavity and an air inlet; the plurality of filter blocks are respectively arranged inside the third side cavity.

2. The dust removal, water collection and drainage system applied to a full-automatic pneumatic control device according to claim 1, characterized in that: the three first side cavities are arranged at the lower end of the first middle housing, and the side walls are connected in sequence, and one of the first side cavities is connected with the air inlet; the three second side cavities are arranged at the lower end of the second middle housing, the second side cavity far from the air inlet is connected with the upper first side cavity, and the side walls of the two second side cavities close to the air inlet are connected; the three third side cavities are arranged at the lower end of the third middle housing, the three fourth side cavities are arranged at the lower end of the fourth middle housing, and one of the fourth side cavities is connected with the atmospheric pipeline interface; the three fifth side cavities are arranged at the lower end of the fifth middle housing, and coaxial inner holes are respectively opened on the upper end surfaces, and the side edges of the lower ends are connected in sequence; the drainage interface is arranged at the lower end of the lower housing and is connected with the lower end of the middle fifth side cavity.

3. A dust removal, water collection and drainage system applied to a full-automatic pneumatic control device according to claim 1, characterized in that: The filtering flow channel includes a ventilation cavity communicated with the air pipeline interface, a third side cavity and a second side cavity on the same side, a second side cavity and a third side cavity in the middle, a ventilation cavity, a third side cavity and a second side cavity on the side away from the air pipeline interface.

4. A dust removal, water collection and drainage system applied to a full-automatic pneumatic control device according to claim 3, characterized in that: The filtering block is selected from one of sponge or steel wool.

5. A dust removal, water collection and drainage system applied to a full-automatic pneumatic control device according to claim 3, characterized in that: The water collection and drainage system includes a second communication flow channel and a plurality of float assemblies; the second communication flow channel includes a first diversion hole, a third side cavity, a second diversion hole, a water collection cavity, a fifth side cavity and a drainage interface; a plurality of the float assemblies are respectively arranged corresponding to the fifth side cavity and the inner hole.

6. A dust removal, water collection and drainage system applied to a full-automatic pneumatic control device according to claim 5, characterized in that: The float assembly includes a sealing seat and a float valve arranged coaxially. The sealing seat is nested and fitted in the inner hole, and a first drainage hole is arranged in the middle; the float valve is arranged in the fifth side cavity, and includes a valve seat fixed at the lower end of the fifth side cavity and a float body arranged above the valve seat. A second drainage hole is arranged in the middle of the valve seat, a limiting column inserted and fitted in the second drainage hole is arranged on the lower end surface of the float body, and a sealing plug for forming a seal with the sealing seat after floating up is arranged on the upper end surface.

7. A dust removal, water collection and drainage system applied to a full-automatic pneumatic control device according to claim 6, characterized in that: A plurality of limiting blocks are evenly arranged on the side wall of the float body, and the side walls of the plurality of limiting blocks are attached to the inner wall of the fifth side cavity.

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