Combined air filter with pressure balance structure

Abstract

This invention discloses a combined air filter with a pressure balancing structure, relating to the field of air source processor technology. It includes a filter tank and a balancing box connected by a connecting pipe, with a control panel embedded in the filter tank. This invention achieves dual filtration of the air source by combining preliminary and secondary filtration, automatically draining and collecting dust and liquid impurities. Furthermore, it uses an integrated module to calculate the current imbalance coefficient based on both sides of the air pressure and real-time dust / liquid volume. This imbalance coefficient is then compared with a system-preset imbalance threshold to achieve real-time feedback adjustment for insufficient or excessive pressure. Air path adjustment is completed through actions such as clearing blockages and adjusting the floating pressure balancing standard, avoiding the problem of air pressure imbalance caused by filter failure, valve core jamming, or internal blockage, without real-time feedback control.

Description

Technical Field

[0001] The invention relates to the technical field of air source processors, and in particular to a combined air filter adopting a pressure balance structure. Background Art

[0002] The air source processor is a component that performs work through the force generated by the pressure or expansion of the gas. It mainly includes an air filter, a pressure reducing valve, and an oil mist collector. The three are usually combined together and are called a triplet. They are an indispensable air source device in the pneumatic system.

[0003] The installation order of the three-way fittings is air filter, pressure reducing valve and oil mist collector according to the air intake direction. The air filter and pressure reducing valve combined together can be called a pneumatic two-way fitting. The air filter and pressure reducing valve can also be assembled together to form a filter pressure reducing valve (the function is the same as the air filter and pressure reducing valve combined). The air filter is used to clean the air source and can filter the moisture in the compressed air to prevent moisture from entering the device with the gas. During operation, the internal pressure balance is controlled by the pressure reducing valve.

[0004] In combination with the above, it should be noted that the premise of automatic control of air pressure balance is to manually set it in advance through the pressure adjustment spring. However, the factors affecting the air pressure imbalance in the air filter include external factors: insufficient input air volume, low pressure adjustment of the air adjustment valve, solenoid valve failure and obstructed air path, etc.; internal factors: filtration failure, valve core stuck and internal blockage. The external factors can be directly reflected through instruments and meters, but when the valve core is stuck or blocked among the internal factors, it cannot be directly displayed and timely warned and shut down, which affects the stable progress of air path processing.

[0005] To this end, this application proposes a solution. Summary of the invention

[0006] The purpose of the present invention is to provide a combined air filter with a pressure balance structure. On the one hand, through a filtration method combining primary filtration and secondary filtration, the air source to be processed is double-filtered so that the dust impurities and liquid component impurities contained in the air source are automatically drained and collected. On the other hand, the bilateral air pressure values ​​and the real-time dust and liquid volume are jointly calculated through an integrated module to obtain the current imbalance coefficient, and the imbalance coefficient is compared and analyzed with the system preset imbalance coefficient threshold to achieve real-time feedback adjustment of insufficient supply pressure and excessive supply pressure. The air path regulation is completed by the execution actions of air path blockage unblocking and floating adjustment of air pressure balance standards, avoiding the problem of air path pressure imbalance caused by filtration failure, valve core sticking and internal blockage, but unable to obtain real-time feedback control.

[0007] The object of the present invention can be achieved by the following technical scheme: a combined air filter with a pressure balance structure, comprising a gas filter tank, a balance box and an execution tank connected by a connecting pipe, a control panel is embedded on the gas filter tank, a drainage box is connected to the lower end of the gas filter tank, an automatic drainage component is arranged in the gas filter tank and the drainage box, an air outlet ring is installed at the inner bottom of the balance box corresponding to the connecting pipe, and an inner inclined groove is opened on the inner ring side of the air outlet ring, a balance component for passing gas for secondary filtration is arranged in the balance box, and a driving structure for intermittent opening and closing of the balance component is installed in the execution tank;

[0008] The balancing component includes a swing column and two filter ring seats that are deflected by a rotating fulcrum, and the end of the swing column extends to the outside of the two filter ring seats and is installed with a stagnation elimination component for eliminating stagnation in the intake channel;

[0009] The anti-delay component includes a micro motor embedded in the upper side of the end of the swing column and a cone seal on the lower side. The output end of the micro motor is equipped with an anti-delay disk extending to the bottom of the swing column and abutting against the air outlet ring. The anti-delay disk is equipped with a side sweep disk matching the inner inclined groove on the air outlet ring.

[0010] It is further configured as follows: the automatic drainage component includes a float floatingly arranged in the air filter tank and the drainage box, the lower end of the float is connected to a sealing plug that fits the inner wall of the drainage box, the lower end of the interior of the air filter tank is equipped with a packaging seat slidably connected to the float, and a guide rotating rod connected to the float is inserted under the packaging seat.

[0011] It is further configured as follows: a rotating ring cylinder is sleeved on the outer portion of the lower end of the packaging seat, and a rotating impeller and a baffle plate sleeved on the outer portion of the guide rotating rod are installed on the lower end of the rotating ring cylinder.

[0012] It is further configured as follows: the driving structure includes an electric push rod arranged on the top of the balance box, the output end of the electric push rod is connected to a spring column, and the lower end of the spring column is connected to a pressing column connected to the swing column.

[0013] It is further configured as follows: the balancing component also includes a filter arranged inside the outer sides of the two filter ring seats, a pressure plate is installed at the lower end of the spring column, and a diaphragm fitted with the pressure plate is installed at the lower end of the inner wall of the actuator tank.

[0014] It is further configured as follows: the rotation fulcrum includes a hinge rod laterally arranged between the filter plates, the hinge rod is connected to the swing column, and the two filter ring seats are provided with bidirectional swing grooves in the up and down deflection directions of the swing column.

[0015] It is further configured as follows: an air inlet pipe for gas entry is installed on one side of the air filter tank, an exhaust pipe is passed through the side of the balance box away from the air inlet end, and a pressure gauge for detecting internal air pressure is installed on the outside of the air filter tank.

[0016] It is further configured as follows: a detection ring column is installed on the gas filter tank, an adjustment handle is sleeved on the detection ring column, a photoelectric sensor for monitoring the vertical displacement of the guide rotating rod is arranged on the top of the adjustment handle, and a locking ring threadedly connected to the gas filter tank is sleeved on the outside of the detection ring column.

[0017] It is further configured that: the control panel is built with an integrated module, and the integrated module includes a bilateral parameter acquisition module, a verification and analysis module, an execution module and a processor that are communicatively connected with each other;

[0018] The bilateral parameter acquisition module is used to acquire the bilateral air pressure values ​​and the real-time dust and liquid volume during the use of the combined air filter, and obtain the imbalance coefficient after numerical calculation of the bilateral air pressure values ​​and the real-time dust and liquid volume, and send the imbalance coefficient to the verification analysis module through the processor, and the verification analysis module compares the imbalance coefficient with the preset imbalance coefficient threshold to complete the analysis of the combined air filter use condition;

[0019] The specific analysis process of the combined air filter usage condition is as follows: if the imbalance coefficient is greater than the imbalance coefficient threshold, it means that the current combined air filter has insufficient supply pressure, and a de-hysteresis signal is generated and sent to the execution module, and the execution module controls the micro motor to execute related actions;

[0020] If the imbalance coefficient is within the imbalance coefficient threshold, it means that the current combined air filter is in a normal balance state and no signal is generated;

[0021] If the imbalance coefficient is less than the imbalance coefficient threshold, it means that the current combined air filter produces an over-limit supply pressure, and generates a balance signal to be sent to the execution module, and the execution module controls the electric push rod to perform related actions.

[0022] The present invention has the following beneficial effects:

[0023] 1. The present invention uses a filtering method that combines primary filtering and secondary filtering to obtain double filtration of the gas source to be processed, automatically drains and collects dust impurities and liquid impurities contained in the gas source, and calculates the current imbalance coefficient by using an integrated module based on the air pressure values ​​on both sides and the real-time dust and liquid volume. The imbalance coefficient is compared and analyzed with the preset imbalance coefficient threshold of the system to achieve real-time feedback adjustment of insufficient and excessive supply pressure, and completes the gas path adjustment by performing the standard actions of clearing the gas path blockage and floating adjustment of the gas pressure balance, thereby avoiding the problem that the gas path pressure imbalance caused by filtering failure, valve core stagnation and internal blockage cannot be controlled by real-time feedback;

[0024] 2. When the pressure supply is insufficient and the anti-stagnation signal is generated: the micro motor starts to drive the anti-stagnation disc to rotate, and the side sweeping discs on both sides of the anti-stagnation disc correspond to the inner inclined groove on the outlet ring, and the dust on the inner inclined groove of the outlet ring is removed. At the same time, the anti-stagnation disc penetrates into the outlet ring, thereby completing the double clearing process of the inner side and inner wall of the outlet ring, avoiding the problem of unsmooth air pressure balance in the air path caused by internal blockage;

[0025] 3. When the supply pressure exceeds the limit and generates a balance signal, the electric push rod starts to drive the upper end of the spring column to move vertically, reducing the elastic release length of the spring part on the spring column. Then, during the air pressure balance process, when the air pressure in the air filter tank is greater than the air pressure in the balance box, the deflection amplitude of the swing column is reduced. Even if the air pressure in the air filter tank is much greater than the air pressure in the balance box, it is possible to achieve a stable balance of the air pressure on both sides while being able to change the spring elongation of the spring column. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 It is a rear view structural schematic diagram of the present invention;

[0029] Figure 3 It is a cutaway schematic diagram of the present invention;

[0030] Figure 4 It is a side cross-sectional schematic diagram of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the automatic drainage assembly of the present invention;

[0032] Figure 6 It is a schematic cross-sectional view of a part of the structure of the anti-delay component of the present invention;

[0033] Figure 7 It is a schematic diagram of the partial structural disassembly of the anti-stagnation component of the present invention;

[0034] Figure 8 It is a schematic diagram of the installation structure of the balancing assembly of the present invention;

[0035] Fig. 9 It is a structural diagram of the anti-stagnation disk of the present invention.

[0036] In the figure: 1. Air filter tank; 2. Drain box; 3. Air intake pipe; 4. Mounting seat; 5. Balance box; 6. Actuator tank; 7. Adjustment handle; 8. Locking ring; 9. Detection ring column;

[0037] 10. Automatic drainage assembly; 101. Packing seat; 102. Rotating ring cylinder; 103. Rotating impeller; 104. Guide rotating rod; 105. Baffle plate; 106. Float; 107. Sealing plug;

[0038] 11. Connecting pipe;

[0039] 12. Anti-stagnation assembly; 121. Second filter ring seat; 122. Swing column; 123. Filter plate; 124. Articulated rod; 125. Two-way swing slot; 126. Cone seal;

[0040] 13. Exhaust pipe; 14. Air outlet ring; 15. Inner inclined groove; 16. Diaphragm; 17. Pressure plate; 18. Spring column; 19. Electric push rod; 20. Down-pressure column; 21. Micro motor; 22. De-stagnation disk; 23. Side sweep disk; 24. Pressure gauge. DETAILED DESCRIPTION

[0041] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0042] Embodiment 1: To solve the problem that the air pressure imbalance of the air path due to filtration failure, valve core sticking and internal blockage cannot be automatically fed back and controlled, the following technical solution is proposed:

[0043] Reference Figure 1 - Fig. 9 As shown, in this embodiment, a combined air filter with a pressure balance structure is adopted, comprising an air filter tank 1, a balance box 5 and an execution tank 6 connected by a connecting pipe 11, the execution tank 6 is installed on the balance box 5 and the insides are connected, a control panel is embedded on the air filter tank 1, a drainage box 2 is connected to the lower end of the air filter tank 1, and an automatic drainage component 10 is provided in the air filter tank 1 and the drainage box 2;

[0044] An outlet ring 14 is installed at the inner bottom of the balancing box 5 corresponding to the connecting pipe 11, and an inner inclined groove 15 is provided on the inner ring side of the outlet ring 14. A balancing component for secondary filtration of the introduced gas is arranged in the balancing box 5, and a driving structure for intermittent opening and closing of the balancing component is installed in the execution tank 6;

[0045] Reference Figure 4 , Figure 6 - Figure 7As shown, the balancing component includes a swing column 122 and a second filter ring seat 121 that deflects with a rotating fulcrum. The end of the swing column 122 extends to the outside of the second filter ring seat 121 and is installed with a stagnation elimination component 12 for eliminating stagnation in the air intake channel. The stagnation elimination component 12 includes a micro motor 21 embedded in the upper side of the end of the swing column 122 and a cone seal 126 on the lower side. The cone seal 126 matches the inner wall and the inner inclined groove 15 of the air outlet ring 14. The output end of the micro motor 21 is installed with a stagnation elimination disk 22 that extends to the bottom of the swing column 122 and abuts against the air outlet ring 14. The stagnation elimination disk 22 is installed with a side sweep disk 23 that matches the inner inclined groove 15 on the air outlet ring 14.

[0046] Reference Figure 6 and Figure 7 As shown, the driving structure includes an electric push rod 19 arranged on the top of the balance box 5, the bottom of the electric push rod 19 is installed on the inner top of the execution tank 6, the output end of the electric push rod 19 is connected to the spring column 18, and the lower end of the spring column 18 is connected to the pressing column 20 connected to the swing column 122;

[0047] The balancing assembly also includes a filter 123 disposed inside the outer side of the second filter ring seat 121, a pressure plate 17 is installed at the lower end of the spring column 18, and a diaphragm 16 in contact with the pressure plate 17 is installed at the lower end of the inner wall of the execution tank 6. When the air pressure in the balancing box 5 is too high, an upward thrust is generated to drive the diaphragm 16 to "bulge", that is, to drive the pressure plate 17 to move upward to form a bilateral air pressure balance;

[0048] At the same time, the upward "bulging" of the diaphragm 16 also drives the swing column 122 to deflect, and the cone seal 126 on the swing column 122 and the air outlet ring 14 form a seal-connected intermittent rotating ring mode between the air filter tank 1 and the balance box 5, achieving the effect of air pressure stabilization;

[0049] Reference Figure 4 and Figure 8 As shown, the pivot point includes a hinge rod 124 disposed transversely between the filter discs 123, the hinge rod 124 is connected to the swing column 122, and the two filter ring seats 121 are provided with a bidirectional swing groove 125 corresponding to the up and down deflection direction of the swing column 122. The arrangement of the two filter ring seats 121 can complete secondary filtration of the gas introduced into the balance box 5, and the filtration process is as follows: the gas discharged from the air outlet ring 14 is filled onto the filter disc 123 outside the two filter ring seats 121, and the gas is converged from both sides to the gas discharge part so that the gas can complete continuous filtration in the form of bilateral annular flow and then convergence, and the double filtration effect is achieved in combination with the aforementioned gas filter tank 1;

[0050] The control panel is built with an integrated module, which includes a communication-connected bilateral parameter acquisition module, a verification and analysis module, an execution module, and a processor;

[0051] The double-side parameter acquisition module is used to obtain the double-side air pressure value and real-time dust and liquid volume during the use of the combined air filter, and obtain the imbalance coefficient SHx after numerical calculation of the double-side air pressure value SQ and the real-time dust and liquid volume SC. The calculation formula of the imbalance coefficient SHx is , where a, b, c are preset proportional coefficients, and a>b>c>0, k is a preset correction factor coefficient, and k>0, the imbalance coefficient is sent to the verification analysis module through the processor, and the verification analysis module compares the imbalance coefficient with the preset imbalance coefficient threshold to complete the analysis of the combined air filter usage condition;

[0052] The specific analysis process of the combined air filter usage condition is as follows: if the imbalance coefficient is greater than the imbalance coefficient threshold, it means that the current combined air filter has insufficient supply pressure, and generates a stagnation elimination signal to be sent to the execution module, and the execution module controls the micro motor 21 to execute action 1. The execution process of action 1 is as follows: the micro motor 21 starts to drive the stagnation elimination disk 22 to rotate, and the air pressure in the air filter tank 1 and the balance box 5 can form an air pressure balance;

[0053] That is, when the air pressure in the gas filter tank 1 is greater than the air pressure in the balance box 5, the air flows from the gas filter tank 1 to the balance box 5, and flows into the balance box 5 through the air outlet ring 14. After overcoming the spring elastic force of the spring column 18, the inflowing gas drives the swing column 122 to swing upward, so that the spring column 18 is stretched and the air outlet ring 14 is exposed, and finally the air pressure in the gas filter tank 1 and the balance box 5 is balanced.

[0054] It is important to note that when the stagnation-eliminating disk 22 rotates, the side sweeping disks 23 on both sides of the stagnation-eliminating disk 22 correspond to the inner inclined grooves 15 on the air outlet ring 14, and the dust on the inner inclined grooves 15 of the air outlet ring 14 is removed. At the same time, the stagnation-eliminating disk 22 penetrates into the air outlet ring 14 to complete the double clearing process of the inner side and the inner wall of the air outlet ring 14, thereby avoiding the problem of unsmooth air pressure balance in the air path caused by internal blockage, further achieving internal air pressure balance while completing air path clearing with active clearing action, and improving the stability of air pressure balance in the entire air path processing process;

[0055] If the imbalance coefficient is within the imbalance coefficient threshold, it means that the current combined air filter is in a normal balance state and no signal is generated;

[0056] If the imbalance coefficient is less than the imbalance coefficient threshold, it indicates that the current combined air filter generates an over-limit supply pressure, and generates a balance signal to be sent to the execution module, which controls the electric push rod 19 to execute action 2. The execution process of action 2 is as follows: when the execution module receives the balance signal, it converts the balance signal into a control signal and sends it to the electric push rod 19, which starts to drive the upper end of the spring column 18 to move vertically, so that the elastic release length of the spring part on the spring column 18 is reduced;

[0057] Then, during the air pressure balancing process, when the air pressure in the air filter tank 1 is greater than the air pressure in the balancing box 5, the deflection amplitude of the swing column 122 is reduced, and even if the air pressure in the air filter tank 1 is much greater than the air pressure in the balancing box 5, a stable balance of the air pressure on both sides can be achieved while changing the spring extension of the spring column 18;

[0058] Basic principle: In the process of processing the air source, the air source processing process of the present invention is basically similar to the conventional processing method of the prior art. The difference lies in: the integrated module is used to calculate the bilateral air pressure values ​​and the real-time dust and liquid volume to obtain the current imbalance coefficient, and the imbalance coefficient is compared and analyzed with the system preset imbalance coefficient threshold to achieve real-time feedback adjustment of insufficient pressure supply and excessive pressure supply, thereby avoiding the problem of air path pressure imbalance caused by filtration failure, valve core sticking and internal blockage and the inability to obtain real-time feedback control.

[0059] Embodiment 2: This embodiment optimizes the structure of embodiment 1:

[0060] Reference Figure 4 and Figure 5 As shown, the automatic drainage assembly 10 includes a buoy 106 floatingly arranged in the air filter tank 1 and the drainage box 2, the lower end of the buoy 106 is connected to a sealing plug 107 that fits the inner wall of the drainage box 2, the lower end of the air filter tank 1 is installed with a packaging seat 101 that is slidably connected to the buoy 106, and a guide rotating rod 104 connected to the buoy 106 is plugged under the packaging seat 101. The lower end of the packaging seat 101 is externally sleeved with a rotating ring cylinder 102, and the lower end of the rotating ring cylinder 102 is installed with a rotating impeller 103 and a baffle 105 that are sleeved outside the guide rotating rod 104.

[0061] When gas enters the gas filter tank 1, it hits the rotating ring cylinder 102 through the air inlet pipe 3 and drives the rotating impeller 103 to rotate. At this time, the liquid entrained in the gas descends due to gravity and gathers between the seal 107 and the drainage box 2. When the weight of the gathered liquid is greater than the buoyancy of the float 106 in the liquid, the float 106 floats and causes the seal 107 to separate from the inner wall of the drainage box 2. The liquid falls through the gap and is discharged, thereby achieving the purpose of automatic drainage. During the operation of the combined air filter, the float 106 and the guide rotating rod 104 rise or fall synchronously, and the photoelectric sensor located above the gas filter tank 1 can measure the rising and falling amplitude of the guide rotating rod 104, thereby obtaining the water level measurement in the drainage box 2.

[0062] Reference Figure 1 - Figure 4 As shown, an air inlet pipe 3 for gas entry is installed on one side of the air filter tank 1, an exhaust pipe 13 is passed through the side of the balance box 5 away from the air inlet end, and a pressure gauge 24 for detecting the internal air pressure is installed on the outside of the air filter tank 1. The pressure gauge 24 can obtain the current air pressure data in the air filter tank 1 in real time, and can also display it intuitively while being connected to the integrated module for real-time communication.

[0063] Reference Figure 1 - Figure 3 As shown, a detection ring column 9 is installed on the gas filter tank 1, and an adjustment handle 7 is sleeved on the detection ring column 9. A photoelectric sensor for monitoring the vertical displacement of the guide rotating rod 104 is arranged on the top of the adjustment handle 7, and a locking ring 8 threadedly connected to the gas filter tank 1 is sleeved on the outside of the detection ring column 9. In the process of detecting the vertical displacement of the guide rotating rod 104, the installation position of the photoelectric sensor is changed by rotating the adjustment handle 7, thereby changing the "zero scale value" of the initial measurement, so as to achieve the purpose of adaptive adjustment for the gas source;

[0064] Reference Figure 1 - Figure 2 As shown, a mounting seat 4 is provided between the air filter tank 1 and the middle rear side of the balancing box 5 for stable installation of the entire combined air filter.

[0065] Embodiment 3: This embodiment combines the technical contents of Embodiment 1 and Embodiment 2, and the process and principle of the present invention are as follows:

[0066] Preliminary filtration stage: when the gas source needs to be processed, the gas is passed into the gas filter tank 1 through the air inlet pipe 3, and the exhaust pipe 13 is connected to the gas supply unit. The gas entering the gas filter tank 1 is firstly filtered by the preliminary filter component to form gas-liquid separation and preliminary dust-liquid separation. In this process, the liquid settles and is collected, and the gas after the preliminary filtration enters the balance box 5 through the connecting pipe 11;

[0067] Second filtering stage: the gas introduced into the balance box 5 hits the filter disc 123 of the second filter ring seat 121, thereby achieving secondary filtering of the gas under the filtering effect of the filter disc 123, and the filtered gas is discharged from the exhaust pipe 13 to the gas supply unit;

[0068] Feedback adjustment stage: It is carried out simultaneously with the primary filtration stage and the secondary filtration stage. During the operation of the filter, the current imbalance coefficient is calculated by obtaining the air pressure values ​​on both sides and the real-time dust and liquid volume, and the imbalance coefficient is compared and analyzed with the preset imbalance coefficient threshold of the system to achieve real-time feedback adjustment of insufficient supply pressure and excessive supply pressure. In the feedback adjustment process, the air path adjustment is completed by the execution actions of air path blockage dredging and floating adjustment of air pressure balance standards;

[0069] In summary, the filtration method combines primary filtration and secondary filtration to double filter the gas source to be processed, which can filter the dust impurities contained in the gas source and automatically settle and collect the liquid impurities, thereby improving the gas source processing efficiency and cleanliness rate. The integrated module is also used to calculate the current imbalance coefficient by jointly calculating the bilateral air pressure values ​​and the real-time dust and liquid volume, and compare and analyze the imbalance coefficient with the system preset imbalance coefficient threshold to achieve real-time feedback adjustment of insufficient and excessive supply pressure. The gas path regulation is completed by clearing the gas path blockage and floating adjustment of the air pressure balance standard execution action to avoid the problem of gas path pressure imbalance due to filtration failure, valve core sticking and internal blockage, which cannot be controlled by real-time feedback.

[0070] The above formulas are obtained by collecting a large amount of data for software simulation and selecting a formula that is close to the actual value. The coefficients in the formula are set by technical personnel in this field according to actual conditions. The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited to this. Any technical personnel familiar with the technical field within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, make equivalent replacement or change, which should be covered within the protection scope of the present invention.

Claims

1. A combined air filter with a pressure balance structure includes a gas filter tank, a balance box and an execution tank connected by a connecting pipe, and a control panel is embedded on the gas filter tank, characterized in that: The lower end of the gas filter tank is connected to a drainage box, and an automatic drainage component is provided in the gas filter tank and the drainage box. An air outlet ring is installed at the inner bottom of the connecting pipe of the balance box, and an inner inclined groove is provided on the inner ring side of the air outlet ring. A balance component for secondary filtration of gas is provided in the balance box, and a driving structure for intermittent opening and closing of the balance component is installed in the execution tank; The balancing component includes a swing column and two filter ring seats that are deflected by a rotating fulcrum, and the end of the swing column extends to the outside of the two filter ring seats and is installed with a stagnation elimination component for eliminating stagnation in the intake channel; The anti-stagnation assembly includes a micro motor embedded in the upper side of the end of the swing column and a cone seal at the lower side. The output end of the micro motor is equipped with an anti-stagnation disk extending to the bottom of the swing column and abutting against the outlet ring. The anti-stagnation disk is equipped with a side sweep disk matching the inner inclined groove on the outlet ring. The driving structure includes an electric push rod arranged on the top of the balance box, the output end of the electric push rod is connected to a spring column, the lower end of the spring column is connected to a lower pressure column connected to the swing column, the balance assembly also includes a filter arranged inside the outer side of the second filter ring seat, the lower end of the spring column is installed with a pressure plate, and the lower end of the inner wall of the execution tank is installed with a diaphragm in contact with the pressure plate; The rotation fulcrum comprises a hinge rod transversely arranged between the filter plates, the hinge rod is connected to a swing column, and the two filter ring seats are provided with bidirectional swing grooves in the up and down deflection directions of the swing column.

2. The combined air filter with a pressure balance structure according to claim 1, characterized in that: The automatic drainage component includes a buoy floatingly arranged in an air filter tank and a drainage box, the lower end of the buoy is connected to a sealing plug that fits the inner wall of the drainage box, the lower end of the inner part of the air filter tank is equipped with a packaging seat that is slidably connected to the buoy, and a guide rotating rod connected to the buoy is inserted under the packaging seat.

3. The combined air filter with a pressure balance structure according to claim 2, characterized in that: The lower end of the packaging seat is sleeved with a rotating ring cylinder, and the lower end of the rotating ring cylinder is equipped with a rotating impeller and a baffle plate sleeved outside the guide rotating rod.

4. The combined air filter with a pressure balance structure according to claim 1, characterized in that: An air inlet pipe for gas to enter is installed on one side of the air filter tank, an exhaust pipe is passed through the side of the balance box away from the air inlet end, and a pressure gauge for detecting the internal air pressure is installed on the outside of the air filter tank.

5. The combined air filter with a pressure balance structure according to claim 1, characterized in that: The control panel is built with an integrated module, and the integrated module includes a bilateral parameter acquisition module, a verification and analysis module, an execution module and a processor that are communicatively connected to each other; The bilateral parameter acquisition module is used to acquire the bilateral air pressure values ​​and the real-time dust and liquid volume during the use of the combined air filter, and obtain the imbalance coefficient after numerical calculation of the bilateral air pressure values ​​and the real-time dust and liquid volume, and send the imbalance coefficient to the verification analysis module through the processor, and the verification analysis module compares the imbalance coefficient with the preset imbalance coefficient threshold to complete the analysis of the combined air filter use condition; The specific analysis process of the combined air filter usage condition is as follows: if the imbalance coefficient is greater than the imbalance coefficient threshold, it means that the current combined air filter has insufficient supply pressure, and a de-hysteresis signal is generated and sent to the execution module, and the execution module controls the micro motor to execute related actions; If the imbalance coefficient is within the imbalance coefficient threshold, it means that the current combined air filter is in a normal balance state and no signal is generated; If the imbalance coefficient is less than the imbalance coefficient threshold, it means that the current combined air filter produces an over-limit supply pressure, and generates a balance signal to be sent to the execution module, and the execution module controls the electric push rod to perform related actions.

Images