A power frequency alternating current ion bar and a method for improving its electricity-eliminating performance

Abstract

A kind of power frequency alternating current ion bar and the method for improving its electricity elimination performance belong to electrostatic elimination field.In the insulating rod core, a group of high-voltage electrode needle circuit board card slot and two groups of ground electrode needle circuit board card slot are arranged;Two groups of ground electrode needle circuit board card slot are symmetrically arranged with high-voltage electrode needle circuit board card slot as center;High-voltage circuit board is arranged in high-voltage electrode needle circuit board card slot;High-voltage circuit board is connected with high-voltage electrode needle sleeve through high-voltage resistance;High-voltage electrode needle is inserted into high-voltage electrode needle sleeve;Ground electrode needle circuit board is arranged in ground electrode needle circuit board card slot;Electrode needle sleeve is arranged on ground circuit board;Ground electrode needle is inserted into ground electrode needle sleeve.The ground electrode changes into needle / point structure, greatly improves the effective utilization rate of ion;The electricity elimination capacity can be adjusted according to the charged quantity or electrostatic potential of the object to be eliminated.The method can be widely used in the design and manufacturing field of active electrostatic elimination device.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of active electrostatic elimination, and particularly relates to a structure of a power frequency AC ion bar and a method for improving the electrostatic elimination performance of the power frequency AC ion bar. BACKGROUND

[0002] In various industrial industries such as textiles, plastics, coating, and film, due to the complex and harsh production environment (for example, there are a large number of flying fibers, fiber, glue powder, solvent droplets, etc. in the production space), and a large number of insulating materials are used in production, a large amount of static electricity is generated, and the static voltage is relatively high, which can easily cause production obstacles and product and personal harm. The power frequency AC ion bar has been widely used in various industrial production lines due to its good environmental tolerance, and has made important contributions to improving industrial production efficiency and improving product quality.

[0003] The discharge structure of the existing power frequency AC ion bar is a needle-plate discharge structure. For example, the utility model patent with the patent number CN201621017383.4 discloses an AC ion bar, and the specific structure is shown in Figure 1 The outermost part of the ion bar is an aluminum U-shaped metal shell 1-2, which is electrically connected to the ground wire. An insulating side plate 1-2 is arranged on the outer side of the high-voltage electrode needle 1-1. When the ion bar works, the high-voltage electrode needle 1-1 discharges to the U-shaped grounded metal shell to generate positive and negative ions to eliminate static electricity.

[0004] Alternatively, when a plastic rod core is used, as shown in Figure 2 A strip-shaped thin plate-shaped stainless steel grounding electrode 2-2 is respectively arranged on both sides of the plastic rod core 2-3, which is electrically connected to the ground wire. When the ion bar works, the high-voltage electrode needle 2-1 discharges to the strip-shaped thin plate-shaped stainless steel grounding electrode 2-2 to generate positive and negative ions to eliminate static electricity.

[0005] For another example, the utility model patent with the patent number CN201120294756.3 also discloses a structure of an AC ion bar, as shown in Figure 3 The cross-section of the ion bar rod core 3-3 is provided with an aluminum metal grounding electrode 3-2 on the outer side of the bottom, and when the ion bar works, the two rows of high-voltage electrode needles 3-1 discharge to the aluminum metal grounding electrode 3-2 to generate positive and negative ions to eliminate static electricity.

[0006] The existing technical solutions have the following technical defects:

[0007] 1. The grounding metal electrode area of the existing power frequency AC ion bar is too large, which causes a considerable part of the positive and negative ions ionized by the high-voltage electrode needle to move to the grounding electrode and finally be introduced into the ground, that is, the useless loss of the ions is large, and the effective utilization rate is low.

[0008] 2. Because the area and structure of the grounding electrode are fixed, the ion rod cannot adjust the electric elimination ability according to the distance between the ion rod and the object to be eliminated, which finally affects the electric elimination effect; for example, when the distance between the ion rod and the object to be eliminated is short (for example, 5-7 cm), the ion rod eliminates electricity quickly, while when the distance between the ion rod and the object to be eliminated is long (for example, 8-10 cm), the ion rod eliminates electricity slowly.

[0009] 3. Because the area and structure of the grounding electrode are fixed, the ion rod cannot adjust the electric elimination ability according to the static potential of the object to be eliminated, which finally affects the electric elimination effect; for example, when the static potential of the object to be eliminated is high (for example, above 20 KV), the ion rod eliminates electricity quickly, while when the static potential of the object to be eliminated is low (for example, below 5 KV), the ion rod eliminates electricity slowly. SUMMARY

[0010] The technical problem to be solved by the present application is to provide a power frequency alternating current ion rod and a method for improving the electric elimination performance of the ion rod. The grounding electrode is changed from a plate / bar / surface structure to a needle / point structure, which reduces the area of the grounding electrode and reduces ion loss; the useless loss of ions is greatly reduced, and the effective utilization rate of ions is greatly improved; because the distance between the needles can be adjusted, the electric elimination ability can be adjusted according to the distance between the ion rod and the object to be eliminated; the electric elimination ability can be adjusted according to the static potential of the object to be eliminated.

[0011] The technical solution of the present application is to provide a power frequency alternating current ion rod, which comprises an insulating rod core and a high-voltage electrode needle, and has the following characteristics:

[0012] A group of high-voltage electrode needle circuit board clamping grooves and two groups of grounding electrode needle circuit board clamping grooves are arranged in the insulating rod core;

[0013] The two groups of grounding electrode needle circuit board clamping grooves are symmetrically arranged with the high-voltage electrode needle circuit board clamping groove as the center;

[0014] A high-voltage circuit board is arranged in the high-voltage electrode needle circuit board clamping groove;

[0015] The high-voltage circuit board is connected with the high-voltage electrode needle sleeve through a high-voltage resistor;

[0016] The high-voltage electrode needle is inserted into the high-voltage electrode needle sleeve in an interference fit;

[0017] A grounding electrode needle circuit board is arranged in the grounding electrode needle circuit board clamping groove;

[0018] An electrode needle sleeve is arranged on the grounding circuit board;

[0019] The grounding electrode needle is inserted into the grounding electrode needle sleeve in an interference fit;

[0020] The insertion positions of the high-voltage electrode needle sleeve and the grounding electrode needle sleeve are higher than the pouring surface of the pouring glue.

[0021] Specifically, the two groups of grounding electrode needle circuit board card slots are located at the same horizontal height.

[0022] Further, the high-voltage electrode needle and the grounding electrode needle can be plugged in and replaced or increased / cancelled.

[0023] Specifically, the number of high-voltage electrode needle sleeves is equal to the number of high-voltage electrode needles to be set; and the number of grounding electrode needle sleeves is equal to the number of grounding electrode needles to be set.

[0024] Further, the arrangement mode of the high-voltage electrode needle and the grounding electrode needle is that the high-voltage electrode needle and the grounding electrode needle are arranged in the same column, or the high-voltage electrode needle and the grounding electrode needle are staggered.

[0025] The technical scheme of the present application also provides a method for improving the power frequency alternating current ion bar electric elimination performance, characterized by:

[0026] A) According to the overall structure design of the ion bar and the selection of components, determine the minimum value S of the high-voltage electrode needle spacing HVmin and the vertical distance S between the grounding electrode needle and the high-voltage electrode needle HV-PE ;

[0027] B) Take the static decay voltage: ±5000V→±500V, test distance: 10cm, as the test standard / requirement;

[0028] C) Under the conditions of different grounding electrode needle spacing S PE and the vertical distance ΔH between the tip of the high-voltage electrode needle and the tip of the grounding electrode needle, test the test data between the high-voltage electrode needle spacing S HV and the electric elimination time T; and curve fitting is performed on the test data obtained by testing to obtain the corresponding parameter formula:

[0029] D) Under the conditions of different high-voltage electrode needle spacing S HV and the vertical distance ΔH between the tip of the high-voltage electrode needle and the tip of the grounding electrode needle, test the test data between the grounding electrode needle spacing S PE and the electric elimination time T; and curve fitting is performed on the test data obtained by testing to obtain the corresponding parameter formula:

[0030] E) Under the conditions of different grounding electrode needle spacing S PE and high-voltage electrode needle spacing S HVUnder certain conditions, experimental data were collected on the relationship between the vertical distance ΔH from the tip of the high-voltage electrode needle to the tip of the grounding electrode needle and the current elimination time T. The obtained experimental data were then subjected to curve fitting to derive the corresponding parameter formula: T = F △H (△H);

[0031] F) By combining the fitting formula obtained from the above experimental steps with the conditional constraint formula, the design parameters for the needle-needle type power frequency AC ion bar to achieve optimal static elimination performance, which meet the above test standards / requirements, can be calculated and evaluated: High voltage electrode needle spacing S HV Grounding electrode needle spacing S PE And the vertical distance ΔH between the tip of the high-voltage electrode needle and the tip of the grounding electrode needle.

[0032] Specifically, the needle spacing S of the high-voltage electrode needles HV and the distance between the grounding electrode needles S PE It conforms to the following relationship:

[0033] S HV =n×S HVmin (n = 1, 2, 3...);

[0034] S PE =n×S HVmin (n = 1, 2, 3...);

[0035] S HVmin This is the minimum value of the distance between the high-voltage electrode needles.

[0036] Furthermore, the aforementioned condition constraint formula includes:

[0037] (1) The distance between the tip of the high-voltage electrode needle and the tip of the grounding electrode needle should be less than or equal to the distance S between the high-voltage electrode needles. HV ,Right now:

[0038] (2) The distance between the grounding electrode pins is an integer multiple of the distance between the high-voltage electrode pins, i.e.: S PE =n×S HV .

[0039] Compared with the prior art, the advantages of the present invention are:

[0040] 1. The grounding electrode is changed from a plate / strip / surface structure to a needle / point structure, so that only a small portion of the positive and negative ions ionized by the high-voltage electrode needle move to the needle-shaped grounding electrode. This greatly reduces the useless loss of ions and significantly improves the effective utilization rate.

[0041] 2. Because all the needle electrodes are used, and portable plug installation can be achieved, the electric field can be adjusted according to the distance of the ion rod installation. For example, when the ion rod installation distance is close (such as 5-7 cm), the needle spacing can be set close; when the ion rod installation distance is far (such as 8-10 cm), the needle spacing can be set far.

[0042] 3. Because all the needle electrodes are used, and portable plug installation can be achieved, the electric field can be adjusted according to the charge amount of the object to be discharged (static potential). For example, when the static potential of the object to be discharged is high (such as 20KV or more), the needle spacing can be set close; when the static potential of the object to be discharged is low (such as 5KV or less), the needle spacing can be set far. BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 It is a transverse sectional structure schematic diagram of the prior art needle-plate type power frequency alternating current ion rod;

[0044] Figure 2 It is a transverse sectional structure schematic diagram of another prior art needle-plate type power frequency alternating current ion rod;

[0045] Figure 3 It is a transverse sectional structure schematic diagram of another prior art needle-plate type power frequency alternating current ion rod;

[0046] Figure 4 It is a transverse sectional structure schematic diagram of the ion rod of the present technical scheme;

[0047] Figure 5 It is a longitudinal sectional structure schematic diagram of the ion rod of the present technical scheme;

[0048] Figure 6 It is a schematic diagram of the same column arrangement of the ion rod electrode needle of the present technical scheme;

[0049] Figure 7 It is a schematic diagram of the staggered arrangement of the ion rod electrode needle of the present technical scheme;

[0050] Figure 8-1 It is a schematic diagram of the high-low setting of the ion rod electrode needle of the present technical scheme (△H<0);

[0051] Figure 8-2 It is a schematic diagram of the high-low setting of the ion rod electrode needle of the present technical scheme (△H=0);

[0052] Figure 8-3 It is a schematic diagram of the high-low setting of the ion rod electrode needle of the present technical scheme (△H>0);

[0053] Figure 9 It is a flowchart of the test scheme of the present technical scheme.

[0054] Fig. 1-1, 2-1, 3-1 is a high-voltage electrode needle, 1-2 is a metal shell, 1-3 is an insulating side plate, 2-2 is a strip-shaped thin plate-shaped stainless steel grounding electrode, 2-3 is a plastic rod core, 3-2 is an aluminum metal grounding electrode, and 3-3 is an ion rod rod core;

[0055] 4-1 is a high-voltage electrode needle, 4-2 is a grounding electrode needle, 4-3 is an insulating rod core, 4-4 is a high-voltage electrode needle sleeve, 4-5 is a grounding electrode needle sleeve, 4-6 is a high-voltage resistor, 4-7 is a grounding electrode needle circuit board, 4-8 is a high-voltage electrode needle circuit board, 4-9 is a process hole, and 4-10 is an electronic potting glue. DETAILED DESCRIPTION

[0056] The application will be further described below in conjunction with the drawings and examples.

[0057] The technical scheme of the application can simultaneously achieve the purposes of reducing the area of the grounding electrode, reducing ion loss, and adjusting the ion rod de-energizing performance according to different de-energizing distances and the size of the charged amount of the de-energized object.

[0058] The technical scheme of the application is as follows:

[0059] 1. As shown in Figure 4 An insulating rod core 4-3 is provided, and a group (or pair) of high-voltage electrode needle circuit board clamping grooves and two groups (or pairs) of grounding electrode needle circuit board clamping grooves are arranged in the rod core. The two groups of grounding electrode needle circuit board clamping grooves are located at the same horizontal height and are symmetrically arranged with the high-voltage electrode needle circuit board clamping groove as the center.

[0060] 2. The high-voltage circuit board 4-8 with a high-voltage resistor 4-6 and a high-voltage electrode needle sleeve 4-4 welded is inserted into the corresponding high-voltage circuit board clamping groove in the rod core, and the high-voltage electrode needle 4-1 is inserted into the high-voltage electrode needle sleeve in an interference fit.

[0061] 3. Two grounding circuit boards 4-7 with grounding electrode needle sleeves 4-5 welded are respectively inserted into the corresponding grounding circuit board clamping grooves in the rod core, and the grounding electrode needle 4-2 is inserted into the grounding electrode needle sleeve 4-5 in an interference fit.

[0062] 4. The insertion position of the high-voltage electrode needle sleeve and the grounding electrode needle sleeve is higher than the potting surface of the potting glue, and the high-voltage electrode needle and the grounding electrode needle can be inserted, replaced, or increased / cancelled.

[0063] For the above-mentioned needle-needle type power frequency alternating current ion rod, the following test scheme can be used for de-energizing performance test to determine the optimal technical design parameters of the product:

[0064] The arrangement mode of the high-voltage electrode needle and the grounding electrode needle is divided into two types: one is that the high-voltage electrode needle 4-1 and the grounding electrode needle 4-2 are arranged in the same column, as shown in Figure 6The second is that the high-voltage electrode needle 4-1 and the ground electrode needle 4-2 are staggered, as shown in Figure 7 . .

[0065] The high-voltage electrode needle spacing S HV , the ground electrode needle spacing S PE , and the vertical distance S HV-PE between the ground electrode needle and the high-voltage electrode needle are set, as shown in Figure 6 , Figure 7 .

[0066] The vertical distance △H from the tip of the high-voltage electrode needle to the tip of the ground electrode needle is set, as shown in Figure 8-1 , 8-2 , and 8-3.

[0067] The product technical design parameters described above have a decisive influence on the electric field elimination performance of the product, and these technical parameters need to be carefully studied.

[0068] There are two key indicators that reflect the electric field elimination performance of the power frequency alternating current ion bar: the electric field elimination time and the balance voltage. This technical solution takes the static decay voltage: ±5000V→±500V, and the test distance: 10cm, as the test standard / requirement, and respectively simulates the electric field elimination test for the high-voltage electrode needle and the ground electrode needle arranged in the same column and staggered.

[0069] The minimum value (S HVmin ) of the high-voltage electrode needle spacing S HV and the vertical distance S HV-PE between the ground electrode needle and the high-voltage electrode needle are basically determined by the overall design size of the ion bar and the electrical performance parameters and the external structure size of the components used (such as high-voltage resistors, etc.). That is, S HVmin and S HV-PE are considered as fixed values.

[0070] Regardless of whether the high-voltage electrode needle and the ground electrode needle are arranged in the same column or staggered, the high-voltage electrode needle spacing S HV and the ground electrode needle spacing S PE both satisfy the following relationship:

[0071] S HV = n×S HVmin (n=1, 2, 3...) - Equation 1

[0072] S PE = n×S HVmin (n=1, 2, 3...) - Equation 2

[0073] In this way, the high-voltage electrode needle spacing S HVThe needle-needle spacing of the ground electrode needle is S PE The vertical distance △H from the tip of the high-voltage electrode needle to the tip of the ground electrode needle, the three design variables (performance influencing parameters) are tested, and the test data obtained by the test are fitted to obtain the corresponding parameter formula, that is:

[0074]

[0075]

[0076] T=F △H (△H) - Formula 5

[0077] In the formula, T is the electric elimination time.

[0078] In order to ensure the basic electric elimination capacity, the constraint conditions (empirical formula) of each parameter are as follows:

[0079]

[0080] S PE =n×S HV -Formula 7

[0081] In this way, the design parameters of the needle-needle type power frequency alternating current ion bar in the best electric elimination performance can be obtained by Formulas 1-7, and the basic flowchart of the test scheme is shown in Figure 9 .

[0082] Figure 8-1 The setting schematic diagram of the high-low △H<0 of the high-voltage electrode needle and the ground electrode needle of the ion bar is shown in the figure, at this time, from the horizontal side of the ion bar, the height of the tip of the ground electrode needle is higher than the height of the tip of the high-voltage electrode needle, which is called that the height difference between the tip of the high-voltage electrode needle and the tip of the ground electrode needle is less than zero, that is: △H<0.

[0083] Figure 8-2 The setting schematic diagram of the high-low △H=0 of the high-voltage electrode needle and the ground electrode needle of the ion bar is shown in the figure, at this time, from the horizontal side of the ion bar, the height of the tip of the ground electrode needle is equal to the height of the tip of the high-voltage electrode needle, which is called that the height of the tip of the ground electrode needle is equal to the height of the tip of the high-voltage electrode needle, that is: △H=0.

[0084] Figure 8-3 The setting schematic diagram of the high-low △H>0 of the high-voltage electrode needle and the ground electrode needle of the ion bar is shown in the figure, at this time, from the horizontal side of the ion bar, the height of the tip of the ground electrode needle is lower than the height of the tip of the high-voltage electrode needle, which is called that the height of the tip of the ground electrode needle is lower than the height of the tip of the high-voltage electrode needle, that is: △H>0.

[0085] In the above statements, the height of the high-voltage electrode needle tip is used as the reference (meaning the height of the high-voltage electrode needle tip is used as the "zero" reference plane). If the height of the grounding electrode needle tip is higher than the height of the high-voltage electrode needle tip, the height difference between the two is negative, so ΔH < 0; if the height of the grounding electrode needle tip is equal to the height of the high-voltage electrode needle tip, the height difference between the two is zero, so ΔH = 0; if the height of the grounding electrode needle tip is lower than the height of the high-voltage electrode needle tip, the height difference between the two is positive, so ΔH > 0.

[0086] The technical solution of the present invention will be described in detail below:

[0087] 1. See Figure 4 , Figure 5 As shown, a slot for inserting a high-voltage electrode needle circuit board 4-8 is provided inside a plastic rod core 4-3, and a slot for a grounding electrode needle circuit board 4-7 is provided on each of its upper sides. These two grounding electrode needle circuit board slots are located at the same horizontal height and are symmetrically arranged with the high-voltage electrode needle circuit board slot as the center.

[0088] 2. The process holes 4-9 inside the plastic rod core are designed for the processing and manufacturing of the rod core.

[0089] 3. Solder one end of the high-voltage resistor 4-6 to the pad on the high-voltage circuit board, and solder the other end of the high-voltage resistor to the tail end of the high-voltage electrode needle sleeve 4-4. Then, insert the soldered high-voltage circuit board into the corresponding high-voltage circuit board slot inside the core, and pour in electronic potting compound 4-10; after the compound has cured, insert the high-voltage electrode needle 4-1 into the electrode needle sleeve 4-4 with an interference fit.

[0090] 4. Solder the tail end of the grounding electrode pin sleeve 4-5 into the pad of the grounding circuit board 4-7. Then, insert the soldered grounding circuit board into the corresponding grounding circuit board slot in the core and fill it with electronic potting compound 4-10. After the compound has cured, insert the grounding electrode pin 4-2 into the grounding electrode pin sleeve 4-5 with an interference fit.

[0091] 5. The insertion point of each electrode needle sleeve should be higher than the potting surface of the potting compound. High voltage electrode needles and grounding electrode needles can be plugged in and replaced or added / removed.

[0092] 6. The high-voltage printed line on the high-voltage electrode pin circuit board is electrically connected to the high-voltage core wire of the shielded high-voltage conductor, and the grounding printed line on the grounding electrode pin circuit board is electrically connected to the shielded wire of the shielded high-voltage conductor. The shielded high-voltage conductor is connected to the high-voltage output and grounding terminal of the high-voltage power supply to achieve energization.

[0093] 7. See also Figure 9As shown, in order to make the ion bar of the present technical solution obtain the optimal electric field elimination performance, the following test methods can be adopted:

[0094] A) According to the overall structure design of the ion bar and the selection of components and elements, the minimum value S of the high-voltage electrode needle spacing is determined HVmin , and the vertical distance S between the ground electrode needle and the high-voltage electrode needle HV-PE .

[0095] B) The static electric field decay voltage: ±5000V→±500V, and the test distance: 10cm, are taken as the test standard / requirement.

[0096] C) Under the conditions of different ground electrode needle spacing S PE and the vertical distance △H between the tip of the high-voltage electrode needle and the tip of the ground electrode needle, the test data of the relationship between the high-voltage electrode needle spacing S HV and the electric field elimination time T are tested; and the test data obtained by testing are curve-fitted to obtain the corresponding parameter formula:

[0097] D) Under the conditions of different high-voltage electrode needle spacing S HV and the vertical distance △H between the tip of the high-voltage electrode needle and the tip of the ground electrode needle, the test data of the relationship between the ground electrode needle spacing S PE and the electric field elimination time T are tested; and the test data obtained by testing are curve-fitted to obtain the corresponding parameter formula:

[0098] E) Under the conditions of different ground electrode needle spacing S PE and high-voltage electrode needle spacing S HV , the test data of the relationship between the vertical distance △H between the tip of the high-voltage electrode needle and the tip of the ground electrode needle and the electric field elimination time T are tested; and the test data obtained by testing are curve-fitted to obtain the corresponding parameter formula: T=F △H (△H).

[0099] F) The conditions of each parameter are restricted:

[0100] (1) The distance between the tip of the high-voltage electrode needle and the tip of the ground electrode needle should be less than or equal to the high-voltage electrode needle spacing S HV , that is:

[0101] (2) The ground electrode needle spacing is equal to an integer multiple of the high-voltage electrode needle spacing, that is: S PE =n×S HV .

[0102] G) The design parameters of the needle-needle type power frequency AC ion bar in the optimal electric elimination performance meeting the above test standards / requirements can be calculated and evaluated by the fitting formula obtained through the above test steps and combined with the condition constraint formula, i.e. the high-voltage electrode needle-needle spacing S HV , the ground electrode needle-needle spacing S PE , and the vertical distance △H from the tip of the high-voltage electrode needle to the tip of the ground electrode needle.

[0103] Embodiment:

[0104] To verify the electric elimination effect of the ion bar of the present technical solution, a comparative electric elimination test was performed with the prior art ion bar (using the ion bar product disclosed in the CN201621017383.4 patent previously applied for by the applicant). The actually measured comparative data are shown in Table 1:

[0105] Table 1: Comparison of electric elimination performance of the ion bar of the present technical solution and the prior art

[0106]

[0107] Note:

[0108] 1) The test instruments used were all Monroe 268A-1T flat plate charge testers;

[0109] 2) The static decay test voltage was all ±5000V→±500V;

[0110] 3) The test distance was all 10cm (the ion bar was perpendicular to the detection flat plate, and the ion bar was 10cm away from the detection flat plate), and no auxiliary gas source was used;

[0111] 4) In the test, the length of the ion bar of the present technical solution was consistent with that of the ion bar of the prior art, and the same high-voltage power supply was used.

[0112] From the comparative test data listed in the above table, it can be seen that:

[0113] 1. The electric elimination time of the ion bar of the present technical solution is significantly faster than that of the ion bar of the prior art, i.e. for eliminating the same static voltage (±5000V→±500V), the ion bar of the present technical solution uses less time.

[0114] 2. From the maximum and minimum values of the voltage generated by the positive and negative ions on the flat plate electrode, it can be determined that the number of positive and negative ions generated by the ion bar of the present technical solution is also significantly more than that of the ion bar of the prior art, i.e. more number of positive and negative ions move to the flat plate electrode, the loss of ions is smaller, and the utilization rate is higher.

[0115] In the technical scheme of the application, the grounding electrode is changed from a plate / bar / surface structure into a needle / point structure, the useless loss of ions is greatly reduced, and the effective utilization rate of ions is greatly improved; since the needle spacing is adjustable, the electric elimination capacity can be adjusted according to the distance of the ion bar installation; the electric elimination capacity can be adjusted according to the charged quantity (static potential) of the object to be eliminated.

[0116] The application can be widely used in the fields of design and manufacture of active electrostatic elimination devices.

Claims

1. A method for improving the electricity elimination performance of a power frequency AC ion bar, characterized in that: the power frequency AC ion bar is provided with a group of high-voltage electrode needle circuit board card slots and two groups of grounding electrode needle circuit board card slots in the insulating rod core; the two groups of grounding electrode needle circuit board card slots are symmetrically arranged with the high-voltage electrode needle circuit board card slots as the center; a high-voltage circuit board is arranged in the high-voltage electrode needle circuit board card slot; the high-voltage circuit board is connected with the high-voltage electrode needle sleeve through a high-voltage resistor; the high-voltage electrode needle is inserted into the high-voltage electrode needle sleeve in interference fit; a grounding electrode needle circuit board is arranged in the grounding electrode needle circuit board card slot; an electrode needle sleeve is arranged on the grounding circuit board; the grounding electrode needle is inserted into the grounding electrode needle sleeve in interference fit; the insertion positions of the high-voltage electrode needle sleeve and the grounding electrode needle sleeve are higher than the pouring surface of the pouring glue; the method for improving the electricity elimination performance of the power frequency AC ion bar comprises: B) taking the electrostatic decay voltage: ±5000V→±500V and the test distance: 10cm as the test standard / requirement; A) According to the overall structure design of the ion rod and the selection of components, determine the minimum value S of the high-voltage electrode needle spacing HVmin And the vertical distance S between the ground electrode needle and the high-voltage electrode needle HV-PE ; wherein, the condition constraint formula comprises: C) at different ground electrode needle spacings S PE and high-voltage electrode needle tip-to-ground electrode needle tip vertical distance AH conditions, test high-voltage electrode needle spacings S HV between the test data of the relationship of the electric elimination time T; and the test data obtained by curve fitting, the corresponding parameter formula is obtained: D) respectively in different high-voltage electrode needle needle spacing S HV and the vertical distance △H from the tip of the high-voltage electrode needle to the tip of the ground electrode needle, test the ground electrode needle needle spacing S PE The test data between the relationship of the test data obtained by testing and the curve fitting of the test data, and the corresponding parameter formula is obtained: E) at different ground electrode needle-needle spacings S PE and high voltage electrode needle-needle spacings S HV under the condition, test the relationship between the vertical distance △H from the tip of the high voltage electrode needle to the tip of the ground electrode needle and the electric elimination time T; and the test data obtained by testing is curve fitted to obtain the corresponding parameter formula: T = F △H (△H). F) The design parameters of the needle-needle type power frequency AC ion bar in the optimal electric field elimination performance, i.e. the high voltage electrode needle-needle spacing S HV , the ground electrode needle-needle spacing S PE , and the vertical distance △H from the tip of the high voltage electrode needle to the tip of the ground electrode needle, can be calculated and evaluated by combining the parameter formulas obtained through the above test steps C to E with the condition constraint formulas. the two groups of grounding electrode needle circuit board card slots are located at the same horizontal height. (1) The distance between the tip of the high-voltage electrode needle and the tip of the ground electrode needle should be less than or equal to the high-voltage electrode needle spacing S HV That is, (2) The ground electrode needle spacing is equal to an integer multiple of the high-voltage electrode needle spacing, that is: S PE = n x S HV .

2. The method of claim 1, wherein the power frequency AC ion bar improves the electric discharge performance, and the method is characterized in that The high voltage electrode needle needle spacing S HV And the ground electrode needle needle spacing ground electrode needle needle spacing S PE Comply with the following relationship: S HV = n x S HVmin (n = 1, 2, 3...) ; S PE = n x S HVmin (n = 1, 2, 3...) ; S HVmin is the minimum value of the high voltage electrode needle needle spacing.

3. The method of claim 1, wherein the power frequency AC ion bar improves the electric discharge performance, and the method is characterized by the high-voltage electrode needle and the grounding electrode needle can be inserted and replaced or increased / cancelled.

4. The method of claim 1, wherein the power frequency AC ion bar improves the electric discharge performance, and the method is characterized by the number of the high-voltage resistor and the high-voltage electrode needle sleeve is equal to the number of the high-voltage electrode needle to be arranged; the number of the grounding electrode needle sleeve is equal to the number of the grounding electrode needle to be arranged.

5. The method of claim 1, wherein the power frequency AC ion bar improves the electric discharge performance, and the method further comprises: applying a voltage of 1,000 to 3,000 V to the power frequency AC ion bar. the arrangement mode of the high-voltage electrode needle and the grounding electrode needle is that the high-voltage electrode needle and the grounding electrode needle are arranged in the same column; or, the high-voltage electrode needle and the grounding electrode needle are staggered.

6. The method of claim 1, wherein the power frequency AC ion bar improves the electric discharge performance, and the method further comprises: applying a voltage of 1,000 V or more to the power frequency AC ion bar. ​

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