Double-channel filter

Abstract

The present invention provides a double-channel filter, comprising a housing, and an inlet and an outlet provided in the housing. A first filtering cavity and a second filtering cavity are provided at a position between the inlet and the outlet in the housing, the first filtering cavity is separately in communication with the inlet and the outlet by means of a first pipeline, and the second filtering cavity is separately in communication with the inlet and the outlet by means of a second pipeline. A first ball core and a second ball core are rotatably provided in the housing. The first ball core and the second ball core are both located at the joint of the first pipeline and the second pipeline, either the first ball core is in communication with the inlet and the first pipeline, the second ball core is in communication with the outlet and the first pipeline, or the first ball core is in communication with the inlet and the second pipeline, and the second ball core is in communication with the outlet and the second pipeline. The double-channel filter further comprises a reversing assembly. The reversing assembly is connected with the first ball core and the second ball core, and drives the first ball core and the second ball core to rotate synchronously so as to switch a path between the inlet and the outlet. By adopting such a configuration, the convenience of gas path switching operation is effectively improved.

Description

A dual-channel filter Technical Field

[0001] The present invention relates to the technical field of filters, in particular to a dual-channel filter. Background Art

[0002] The filter is an indispensable device on the pipeline for conveying media. It is usually installed on the pressure regulating valve, pressure relief valve and water level valve to achieve solid-liquid separation or solid-gas separation.

[0003] For example, in the field of gas transmission and distribution, in order to extend the service life of the controller of the pressure regulator, it is usually necessary to install a filter on the gas supply pipeline to further filter the supply gas source and improve the cleanliness of the supply gas source. At present, in order to facilitate the inspection and replacement of the corresponding filter screens, most of the filters on the market are dual-channel filters, which usually include two single filter structures in parallel, which are connected by two three-way valves. In response to the above-mentioned related technologies, when the staff inspects or replaces the filter screen, they need to switch the two three-way valves at the same time. If only one of the three-way valves is switched, the pressure regulator will be in a fault position, affecting the normal operation of the pipeline. The inventor believes that it is difficult to adjust the two three-way valves at the same time, which easily leads to the risk of misoperation and there is room for improvement.

[0004] Summary of the Invention

[0005] The object of the present invention is to provide a dual-channel filter for realizing online replacement of the filter screen without affecting the normal operation of the pipeline, while improving the convenience of replacing or repairing the filter screen.

[0006] The technical solutions provided by the present invention are as follows:

[0007] The present invention provides a dual-channel filter, comprising:

[0008] a housing, wherein an inlet and an outlet are provided on the housing;

[0009] a first filter chamber and a second filter chamber, wherein the first filter chamber and the second filter chamber are both located between the inlet and the outlet, and a first pipeline and a second pipeline are provided in the housing, wherein the first filter chamber is connected to the inlet and the outlet respectively through the first pipeline, and the second filter chamber is connected to the inlet and the outlet respectively through the second pipeline;

[0010] a first core and a second core, both of which are rotatably disposed within the housing, and both of which are located at the connection between the first pipe and the second pipe, with the first core connecting the inlet and the first pipe, and the second core connecting the outlet and the first pipe, or the first core connecting the inlet and the second pipe, and the second core connecting the outlet and the second pipe;

[0011] A reversing assembly connects the first ball core and the second ball core, and drives the first ball core and the second ball core to rotate simultaneously to switch the passage between the inlet and the outlet.

[0012] The dual-channel filter provided by the present invention is connected to the gas supply pipeline. In specific operation, high-pressure gas enters the shell from the inlet, and sequentially passes through the first spherical core inner channel and the first pipeline into the outer cavity of the first filter cavity, then passes through the filter screen into the inner cavity of the first filter cavity, and then passes through the first pipeline and the second spherical core inner channel in sequence before being discharged from the shell from the outlet. At this time, the first filter cavity and its inner filter screen are used for filtering operations, and the second filter cavity and its inner filter screen are used as backup. The filter screen in the second filter cavity can be repaired and replaced.

[0013] When the reversing assembly is started, the reversing assembly drives the first ball core and the second ball core to rotate simultaneously until the first ball core is connected to the inlet and the second pipeline, and the second ball core is connected to the outlet and the second pipeline. At this time, the second filter chamber and its inner filter are used for filtering operations, and the first filter chamber and its inner filter are used as spares. The filter in the first filter chamber can be repaired or replaced.

[0014] The driving assembly drives the first ball core and the second ball core to rotate simultaneously, thereby realizing the switching of the air path in the shell, effectively improving the convenience of the air path switching operation, and making it easier for the staff to repair or replace the corresponding filter.

[0015] In some embodiments, the reversing assembly includes a first valve stem, one end of which is connected to the first ball core, and the other end of which extends out of the housing and is coaxially fixedly connected to a first interlocking gear;

[0016] The reversing assembly further includes a second valve stem, one end of which is connected to the second ball core, and the other end of which extends out of the housing and is coaxially fixedly connected to a second interlocking gear;

[0017] The first interlocking gear is meshed with the second interlocking gear;

[0018] The housing is provided with a driving member, and the driving member drives the first interlocking gear and the second interlocking gear to rotate.

[0019] In some embodiments, a first plug-in block is formed on one end of the first valve stem close to the first ball core, and a first slot is formed in the first ball core corresponding to the first plug-in block. The first plug-in block is inserted into the first slot and plugged into the first ball core.

[0020] A second plug-in block is formed on one end of the second valve stem close to the second ball core. The second ball core has a second slot corresponding to the second plug-in block. The second plug-in block is embedded in the second slot and plugged into the second ball core.

[0021] Through the dual-channel filter provided by the present invention, the connection between the first valve stem and the first ball core, and the connection between the second valve stem and the second ball core are realized by means of the plug-in cooperation between the first plug-in block and the first slot, and the plug-in cooperation between the second plug-in block and the second slot. The connection structure is simple, which helps to improve the production convenience of the dual-channel filter and save the company's manufacturing costs.

[0022] In some embodiments, the driving member includes a handle, which is fixedly connected to an end of the first valve stem away from the first interlocking gear; or, the handle is fixedly connected to an end of the second valve stem away from the second interlocking gear.

[0023] With the dual-channel filter provided by the present invention, when switching the air path, a worker grips and turns the handle to drive the first or second interlocking gear to rotate, while also driving the second or first interlocking gear to rotate. Under the action of the first and second interlocking gears, the first and second cores rotate in opposite directions, changing the air path from the original one where the first core connects the inlet to the first pipeline and the second core connects the outlet to the first pipeline, to the one where the first core connects the inlet to the second pipeline and the second core connects the outlet to the second pipeline, and vice versa. Switching the air path by turning the handle has a simple structure and is easy to operate, which helps further improve the convenience of workers when repairing or replacing the filter.

[0024] In some embodiments, the inner channels of the first core and the second core are both right-angle channels, and the first interlocking gear and the second interlocking gear are both half gears.

[0025] With the dual-channel filter provided by the present invention, when switching the air path, it is sufficient to rotate the handle 90 degrees; the first chain gear and the second chain gear are both set to half-tooth swing, and by observing the meshing position of the first chain gear and the second chain gear, it is convenient for the staff to observe the rotation angle of the handle, thereby ensuring that the first ball core and the second ball core are rotated into place, thereby ensuring that the first pipeline or the second pipeline is unobstructed.

[0026] In some embodiments, a fixing sleeve is installed on the side of the shell facing away from the reversing assembly, one end of the fixing sleeve extends into the shell and is detachably fixedly connected to the shell; the end of the fixing sleeve extending into the shell is hollow, and the first filter chamber and the second filter chamber are respectively formed in the inner cavity corresponding to the fixing sleeve.

[0027] Through the dual-channel filter provided by the present invention, during actual production, after forming the first filter cavity or the second filter cavity on the fixed sleeve, the corresponding fixed sleeve is installed on the shell, which helps to further improve the production convenience of the dual-channel filter and further save the company's production costs.

[0028] In some embodiments, a filter screen is coaxially mounted on the inner cavity of the fixing sleeve, and a spring is provided between the bottom wall of the filter screen and the bottom wall of the inner cavity of the fixing sleeve;

[0029] The two ends of the spring respectively press against the bottom wall of the inner cavity of the fixing sleeve and the bottom wall of the filter screen, and make the end of the filter screen away from its own bottom wall press against the inner wall of the shell.

[0030] In the dual-channel filter provided by the present invention, a spring is used to support the filter screen and press the end of the filter screen away from its bottom wall against the inner wall of the shell, thereby stably separating the filter cavity into an inner cavity and an outer cavity that are independent of each other. The structure is simple and the manufacturing is convenient, which effectively ensures the production convenience of the dual-channel filter.

[0031] In some embodiments, a sealing gasket is tightly arranged between the end of the filter screen facing away from the bottom wall and the inner wall of the shell.

[0032] In the dual-channel filter provided by the present invention, the sealing gasket is used to improve the sealing performance between the inner cavity and the outer cavity of the filter cavity.

[0033] In some embodiments, a first fixing seat and a second fixing seat are respectively disposed on the shell on either side of the first core in any radial direction. The first fixing seat and the second fixing seat are both hollow, and the first pipe is formed in the first fixing seat, and the second pipe is formed in the second fixing seat.

[0034] A first valve seat is provided at one end of the first fixed seat close to the first ball core, and a second valve seat is provided at one end of the second fixed seat close to the first ball core. The first ball core is installed between the first valve seat and the second valve seat and is rotatably connected to the first valve seat and the second valve seat.

[0035] A third fixing seat and a fourth fixing seat are respectively provided on the housing on either side of the second core in any radial direction, and the second core is mounted between the third fixing seat and the fourth fixing seat in the same manner as the first core is mounted between the first fixing seat and the second fixing seat;

[0036] The first pipeline is formed in the third fixing seat, and the second pipeline is formed in the fourth fixing seat.

[0037] In some embodiments, the first fixing base, the second fixing base, the third fixing base, and the fourth fixing base are all detachably fixedly connected to the housing.

[0038] With the dual-channel filter provided by the present invention, the first pipeline is arranged in the first fixing seat and the third fixing seat, the second pipeline is arranged in the second fixing seat and the fourth fixing seat, and the first fixing seat, the second fixing seat, the third fixing seat and the fourth fixing seat are detachably fixed on the shell, which helps to improve the convenience when forming the first pipeline and the second pipeline; at the same time, the first valve seat and the second valve seat support the first ball core and the second ball core, which makes it convenient for the staff to install the first ball core and the second ball core at the corresponding positions in the shell, thereby effectively ensuring the production convenience of the dual-channel filter.

[0039] Compared with the prior art, the dual-channel filter provided by this application has at least one of the following beneficial effects:

[0040] 1. By turning the handle, the first and second interlocking gears are driven to rotate, and the first and second interlocking gears drive the first and second ball cores to rotate simultaneously, thereby realizing the switching operation of the air path; at the same time, the rotation of the first and second interlocking gears is set to half gear, which makes it convenient for the staff to observe the rotation angle of the handle and judge the rotation angle of the first and second ball cores based on this. The structure is simple and the operation is convenient, which effectively ensures the convenience of production and use of the dual-channel filter;

[0041] 2. By arranging the first filter cavity and the second filter cavity in the fixing sleeve, arranging the first pipeline in the first fixing seat and the third fixing seat, and arranging the second pipeline in the second fixing seat and the fourth fixing seat, and the fixing sleeve, the first fixing seat, the second fixing seat, the third fixing seat and the fourth fixing seat can be detachably mounted on the housing, the production convenience of the dual-channel filter is further improved;

[0042] 3. The filter screen is supported by a spring, and a sealing gasket is set between the filter screen and the inner wall of the shell, so that the filter cavity is stably separated into an inner cavity and an outer cavity that are independent of each other. The structure is simple and easy to manufacture, which effectively ensures the production convenience of the dual-channel filter and saves the company's production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The preferred implementation scheme will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of this solution.

[0044] FIG1 is an axonometric diagram showing the overall structure of the dual-channel filter according to an embodiment of the present invention;

[0045] FIG2 is a plan view showing the overall structure of the dual-channel filter according to an embodiment of the present invention;

[0046] FIG3 is a cross-sectional view taken along line AA in FIG2 , mainly illustrating the placement of the first core and the second core;

[0047] FIG4 is a plan view showing the overall structure of the dual-channel filter according to an embodiment of the present invention;

[0048] FIG5 is a cross-sectional view taken along line BB in FIG4 , mainly used to illustrate the structure of the first filter cavity and the second filter;

[0049] FIG6 is a plan view showing the overall structure of the dual-channel filter according to an embodiment of the present invention;

[0050] FIG7 is a cross-sectional view taken along the CC direction in FIG6 , which is mainly used to illustrate the overall structure of the reversing assembly.

[0051] Description of reference numerals:

[0052] 1. Housing; 11. Inlet; 12. Outlet; 13. Adapter; 14. Through hole; 15. Limit pin; 2. First ball core; 3. Second ball core; 4. Reversing assembly; 41. First valve stem; 411. First plug-in block; 42. Second valve stem; 43. First interlocking gear; 44. Second interlocking gear; 45. Fastening bolt; 5. Handle; 6. Fixing sleeve; 61. First filter chamber; 62. Second filter chamber; 63. Filter screen; 64. Spring; 65. Sealing gasket; 7. First fixing seat; 71. First pipeline; 72. First valve seat; 8. Second fixing seat; 81. Second pipeline; 82. Second valve seat. DETAILED DESCRIPTION

[0053] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other embodiments can be obtained based on these drawings without inventive work.

[0054] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. As used herein, "one" not only means "only one" but also "more than one."

[0055] In one embodiment, referring to Figures 1 to 5 of the accompanying drawings of the specification, a dual-channel filter includes a housing 1, an inlet 11 and an outlet 12 opened on the housing 1, a first filter chamber 61 and a second filter chamber 62 are respectively provided between the inlet 11 and the outlet 12 in the housing 1; a first pipe 71 is provided in the housing 1 corresponding to the first filter chamber 61, and the first filter chamber 61 is communicated with the inlet 11 and the outlet 12 respectively through the first pipe 71; a second pipe 81 is provided in the housing 1 corresponding to the second filter, and the second filter chamber 62 is communicated with the inlet 11 and the outlet 12 respectively through the second pipe 81; A first ball core 2 and a second ball core 3 are separately provided for rotation. The first ball core 2 and the second ball core 3 are both located at the connection between the first pipeline 71 and the second pipeline 81, and the first ball core 2 is connected to the inlet 11 and the first pipeline 71, and the second ball core 3 is connected to the outlet 12 and the first pipeline 71, or the first ball core 2 is connected to the inlet 11 and the second pipeline 81, and the second ball core 3 is connected to the outlet 12 and the second pipeline 81; a reversing component 4 is also provided in the shell 1, the reversing component 4 connects the first ball core 2 and the second ball core 3, and drives the first ball core 2 and the second ball core 3 to rotate simultaneously, so as to switch the passage between the inlet 11 and the outlet 12.

[0056] The dual-channel filter is suitable for use in gas or liquid medium delivery pipelines. In this embodiment of the present application, the use scenario of the gas medium delivery pipeline is used as an example for explanation, and specifically the gas supply pipeline is used as an example for explanation. After the dual-channel filter is connected to the gas supply pipeline, in the first state, the high-pressure gas enters the inner cavity of the shell 1 from the inlet 11, and enters the outer cavity of the first filter cavity 61 through the inner channel of the first ball core 2 and the first pipeline 71 in turn, and then is filtered by the filter 63 and enters the inner cavity of the first filter cavity 61, and then enters the inner channel of the second ball core 3 through the first pipeline 71 in turn, and is discharged from the shell 1 from the outlet 12; at this time, the first filter cavity 61 and its inner filter 63 are used for filtering operations, and the second filter cavity 62 and its inner filter 63 are used as spares. The filter 63 in the second filter cavity 62 can be repaired and replaced.

[0057] When switching the gas circuit, the reversing assembly 4 drives the first ball core 2 and the second ball core 3 to rotate simultaneously until the first ball core 2 connects to the inlet 11 and the second pipe 81, and the second ball core 3 connects to the outlet 12 and the second pipe 81, entering the second state. At this time, the high-pressure gas enters the inner cavity of the shell 1 from the inlet 11, and passes through the inner channel of the first ball core 2 and the second pipe 81 in sequence to enter the outer cavity of the second filter cavity 62. It is then filtered by the filter 63 and enters the inner cavity of the second filter cavity 62. It then passes through the second pipe 81 in sequence to enter the inner channel of the second ball core 3 and is discharged from the shell 1 through the outlet 12. In the second state, the second filter cavity 62 and its inner filter 63 are used for filtering, while the first filter cavity 61 and its inner filter 63 serve as a backup. The filter 63 in the first filter cavity 61 can be repaired or replaced. Using this method to switch the gas circuit in the shell 1 is simple in structure and easy to operate, effectively improving the convenience of workers when repairing or replacing the corresponding filter 63.

[0058] In one embodiment, based on the above embodiment, specifically; referring to Figures 1 and 2, the shell 1 is a rectangular box-shaped structure, and the inlet 11 and the outlet 12 are respectively opened at the center position of the two ends of the shell 1 in the length direction; of course, depending on the application scenario, the shell 1 can be set to any shape. In the implementation of the present application, there is no specific restriction on the shape of the shell 1; in this embodiment of the present application, the rectangular shell 1 is taken as an example for explanation.

[0059] To facilitate the connection of the dual-channel filter to the air supply line, adapters 13 are installed at the inlet 11 and outlet 12 of the housing 1. Each adapter 13 is embedded in the corresponding inlet 11 or outlet 12 along its own axis and is snap-fitted with the inner wall of the corresponding inlet 11 or outlet 12. Of course, other connection methods such as threaded connection can also be used to connect the adapter 13 and the corresponding inlet 11 or outlet 12. In the embodiments of the present application, there is no specific limitation on this. At the same time, to improve the sealing performance of the dual-channel filter, in this embodiment of the present application, with reference to Figure 2, a coaxial annular groove is coaxially formed on the outer circumferential surface of the end of the adapter 13 extending into the housing 1, and a sealing ring is provided on the fixed sleeve 6 in the annular groove. After the adapter 13 is installed to the corresponding inlet 11 or the corresponding outlet 12, the outer circumferential surface of the adapter 13 presses the sealing ring against the inner wall of the corresponding inlet 11 or the inner wall of the corresponding outlet 12.

[0060] 1 and 4 , in this embodiment of the present application, the reversing assembly 4 includes a first valve stem 41 and a second valve stem 42, wherein one end of the first valve stem 41 is mounted on the outer circumferential surface of the first ball core 2, and one end of the second valve stem 42 is mounted on the outer circumferential surface of the second ball core 3; specifically, the first valve stem 41 is formed with a first plug-in block 411 extending along its own length direction at one end close to the first ball core 2, the first ball core 2 is provided with a first slot corresponding to the first plug-in block 411, and the first plug-in block 411 is plugged into and matched with the first slot along the axial direction of the first valve stem 41; similarly, the second valve stem 42 is formed with a second plug-in block at one end close to the second ball core 3, the second ball core 3 is provided with a second slot corresponding to the second plug-in block, the second plug-in block is embedded in the second slot, and is plugged into and matched with the second ball core 3.

[0061] Since the inner channels of the first ball core 2 and the second ball core 3 need to be set as right-angle channels, in this embodiment of the present application, the length direction of the first valve stem 41 is perpendicular to the plane where the inner channel of the first ball core 2 is located, and is collinear with the corresponding radial direction of the first ball core 2; and the length direction of the first valve stem 41 is parallel to the thickness direction of the shell 1; the setting method of the second valve stem 42 relative to the second ball core 3 is the same as the setting method of the first valve stem 41 relative to the first ball core 2.

[0062] A through hole 14 is formed in the housing 1, corresponding to the first valve stem 41. The end of the first valve stem 41 facing away from the first core 2 extends out of the housing 1 and rotatably engages with the inner wall of the through hole 14. An annular groove is also provided on the outer wall of the first valve stem 41, corresponding to the through hole 14. A sealing ring is disposed within the annular groove and fixed to the sleeve 6. After the end of the first valve stem 41 facing away from the first core 2 passes through the through hole 14, the outer circumference of the first valve stem 41 presses the corresponding sealing ring against the inner wall of the through hole 14, thereby ensuring the sealing of the housing 1. Referring to Figure 4, in this embodiment of the present application, two sealing rings are provided on the outer wall of the first valve stem 41. Similarly, the mating relationship between the second valve stem 42 and the housing 1 is the same as that between the first valve stem 41 and the housing 1.

[0063] 1 , 3 and 4 , the reversing assembly 4 further includes a first interlocking gear 43 and a second interlocking gear 44 ; wherein the first interlocking gear 43 is mounted on one end of the first valve stem 41 extending out of the housing 1 ; specifically, the cross-section of the end of the first valve stem 41 extending out of the housing 1 along its own radial direction is set to be square, and correspondingly, a square hole is opened at the rotating shaft of the first interlocking gear 43, and the first interlocking gear 43 is sleeved on the one end of the first valve stem 41 extending out of the housing 1 through the square hole, and is snap-fitted relative to the first valve stem 41 around the axial direction of the first valve stem 41; and, on the first valve stem 41, the end of the first interlocking gear 43 facing away from the first ball core 2 is coaxially sleeved with a sleeve and a gasket in sequence, and the end wall of the end of the first valve stem 41 extending out of the housing 1 is provided with a fastening bolt 45; during assembly, the threaded end of the fastening bolt 45 is screwed into the first valve stem 41 along the axial direction of the first valve stem 41, and the sleeve, gasket and the first interlocking gear 43 are fixed to the first valve stem 41 through the nut end.

[0064] Similarly, the second interlocking gear 44 is mounted on the second valve stem 42 , and the connection method between the second interlocking gear 44 and the second valve stem 42 is the same as the connection method between the first interlocking gear 43 and the first valve stem 41 .

[0065] In this embodiment of the present application, the first valve stem 41 and the second valve stem 42 are arranged in parallel and spaced apart, the first chain gear 43 and the second chain gear 44 are arranged on the same side of the shell 1 in the thickness direction, and the first chain gear 43 and the second chain gear 44 are meshed with each other.

[0066] 1 to 4 , the housing 1 is further provided with a driving member for driving the first interlocking gear 43 and the second interlocking gear 44 to rotate. In this embodiment of the present application, the driving member includes a handle 5, and a fixing sleeve 6 of the handle 5 is provided at the end of the first valve stem 41 or the second valve stem 42 extending outside the housing 1. When switching the air circuit, the staff member grasps and rotates the handle 5 to drive the first interlocking gear 43 and the second interlocking gear 44 to rotate; under the action of the first interlocking gear 43 and the second interlocking gear 44, the first ball core 2 and the second ball core 3 rotate in opposite directions, so that the air circuit is changed from the original first ball core 2 connecting the inlet 11 with the first pipeline 71 and the second ball core 3 connecting the outlet 12 with the first pipeline 71 to the first ball core 2 connecting the inlet 11 with the second pipeline 81 and the second ball core 3 connecting the outlet 12 with the second pipeline 81, and vice versa.

[0067] Moreover, referring to Figure 1, in order to facilitate observation of the rotation angle of the handle 5, in this embodiment of the present application, the first chain gear 43 and the second chain gear 44 are both configured as half gears, and a limiting pin 15 is provided on the housing 1 to limit the rotation angle of the first chain gear 43 and the second chain gear 44.

[0068] Further, referring to Figures 1 and 3, a fixing sleeve 6 is installed on the side of the shell 1 away from the handle 5, and two fixing sleeves 6 are provided. The two fixing sleeves 6 are respectively arranged on both sides of the width direction of the shell 1, and the two fixing sleeves 6 are both located on the center line of the length direction of the shell 1; any fixing sleeve 6 includes a sleeve body and a bottom cover, the sleeve body and the bottom cover are coaxially arranged and integrally formed; the sleeve body and the bottom cover are both hollow along their own axes, specifically, the inner cavity of the sleeve body passes through the axial direction of the sleeve body, the inner cavity of the bottom cover passes through the side of the bottom cover close to the sleeve body, the inner cavity of the bottom cover is connected with the inner cavity of the sleeve body, and the inner cavity of the sleeve body is connected with the first pipeline 71 and the second pipeline 81; the first filter chamber 61 and the second filter chamber 62 correspond one-to-one to the two mounting sleeves, and the first filter chamber 61 and the second filter chamber 62 are respectively formed in the inner cavity of the corresponding mounting sleeve.

[0069] Referring to Figure 3 , the filter screen 63 of the first filter chamber 61 and the filter screen 63 of the second filter chamber 62 are respectively disposed within the inner cavities of their corresponding housings, with each filter screen 63 coaxially disposed with the corresponding housing. Furthermore, a spring 64 is coaxially disposed within the inner cavity of each bottom cover. One end of the spring 64 presses against the bottom wall of the corresponding bottom cover inner cavity, while the other end presses against the bottom wall of the corresponding filter screen 63, pressing the end of the corresponding filter screen 63 facing away from its own bottom wall against the inner wall of the corresponding first pipe 71 or second pipe 81. Furthermore, to stably separate the inner and outer cavities of the filter chamber, a sealing gasket 65 is installed between the end of each filter screen 63 facing away from its own bottom wall and the inner wall of the corresponding first pipe 71 or second pipe 81.

[0070] 3 , in order to facilitate the formation of the first filter chamber 61 and the second filter chamber 62 , any fixed sleeve 6 is detachably fixedly connected to the shell 1 ; in this embodiment of the present application, the sleeve end of any fixed sleeve 6 extends into the shell 1 and is plugged into the shell 1 ; of course, other connection methods can also be used to connect the fixed sleeve 6 and the shell 1 , and no specific limitation is made to this in the embodiment of the present application ; in addition, in order to ensure sealing, a sealing ring is provided between the outer cylindrical surface of any sleeve and the shell 1 .

[0071] 5 , a first fixing seat 7 and a second fixing seat 8 are further provided on the shell 1. The first fixing seat 7 and the second fixing seat 8 are respectively located at the two ends of the shell 1 in the width direction, and the first fixing seat 7 and the second fixing seat 8 are respectively provided at the two ends corresponding to the radial direction of the first core 2; in this embodiment of the present application, the ends of the first fixing seat 7 and the second fixing seat 8 extending into the shell 1 are both hollow, and the first pipeline 71 is formed in the first fixing seat 7, and the second pipeline 81 is formed in the second fixing seat 8; and the first fixing seat 7 and the second fixing seat 8 are both detachably fixedly connected to the shell 1; in this embodiment of the present application, the ends of the first fixing seat 7 and the second fixing seat 8 extending into the shell 1 are both fixedly engaged with the shell 1 and sealed by a sealing ring; of course, other methods can also be used to achieve the installation of the first fixing seat 7 and the second fixing seat 8 on the shell 1, and no specific restrictions are made to this in the implementation mode of the present application.

[0072] At the same time, a first valve seat 72 is coaxially embedded in one end of the first fixed seat 7 close to the first ball core 2, and a second valve seat 82 is coaxially embedded in one end of the second fixed seat 8 close to the first ball core 2. The first ball core 2 is installed between the first valve seat 72 and the second valve seat 82, and is rotatably connected to the first valve seat 72 and the second valve seat 82, so as to be installed in the shell 1.

[0073] Similarly, a third fixing seat and a fourth fixing seat are provided on the shell 1 corresponding to the second core 3. The third fixing seat and the fourth fixing seat are also respectively located at the two ends of the shell 1 in the width direction, and are also respectively detachably fixed to the shell 1; and the installation method of the third fixing seat and the fourth fixing seat on the shell 1 is the same as the installation method of the first fixing seat 7 and the second fixing seat 8 on the shell 1, and the installation method of the second core 3 between the third fixing seat and the fourth fixing seat is the same as the installation method of the first core 2 between the first fixing seat 7 and the second fixing seat 8.

[0074] The implementation principle of the embodiment of the present application is as follows: after the dual-channel filter is connected to the gas supply pipeline, in the first state, the first core 2 is connected to the inlet 11 and the first pipeline 71, and the second core 3 is connected to the outlet 12 and the first pipeline 71. The high-pressure gas enters the inner cavity of the shell 1 from the inlet 11, and passes through the inner channel of the first core 2 and the first pipeline 71 in turn into the outer cavity of the first filter cavity 61, and then is filtered by the filter 63, enters the inner cavity of the first filter cavity 61, and then passes through the first pipeline 71 in turn into the inner channel of the second core 3, and is discharged from the shell 1 from the outlet 12; at this time, the first filter cavity 61 and its inner filter 63 are used for filtering operations, and the second filter cavity 62 and its inner filter 63 are used as spares. The filter 63 in the second filter cavity 62 can be repaired and replaced.

[0075] When switching the gas path, the handle 5 is rotated 90° to drive the first interlocking gear 43 or the second interlocking gear 44 to rotate, and at the same time drive the first ball core 2 and the second ball core 3 to rotate in the opposite direction until the first ball core 2 is connected to the inlet 11 and the second pipe 81, and the second ball core 3 is connected to the outlet 12 and the second pipe 81, entering the second state; in the second state, the high-pressure gas enters the inner cavity of the shell 1 from the inlet 11, and passes through the inner channel of the first ball core 2 and the second pipe 81 in turn into the outer cavity of the second filter cavity 62, and then is filtered by the filter 63, enters the inner cavity of the second filter cavity 62, and then passes through the second pipe 81 in turn into the inner channel of the second ball core 3, and is discharged from the shell 1 from the outlet 12; at this time, the second filter cavity 62 and its inner filter 63 are used for filtering operations, and the first filter cavity 61 and its inner filter 63 are used as spares, and the filter 63 in the first filter cavity 61 can be repaired and replaced. By rotating the handle 5, the first ball core 2 and the second ball core 3 are driven to rotate simultaneously, thereby realizing the switching of the air path in the shell 1. The structure is simple and the operation is convenient, which effectively improves the convenience of the air path switching operation and facilitates the staff to repair or replace the corresponding filter 63; at the same time, it effectively improves the production convenience of the dual-channel filter and saves the company's production costs.

[0076] It should be noted that the above embodiments can be freely combined as needed. The above description is only a preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A dual-channel filter, characterized in that: include: A shell, wherein an inlet and an outlet are formed on the shell; A first filter chamber and a second filter chamber, wherein the first filter chamber and the second filter chamber are both located between the inlet and the outlet, a first pipeline and a second pipeline are provided in the housing, the first filter chamber is communicated with the inlet and the outlet respectively through the first pipeline, and the second filter chamber is communicated with the inlet and the outlet respectively through the second pipeline; A first ball core and a second ball core, the first ball core and the second ball core are both rotatably disposed in the shell, the first ball core and the second ball core are both located at the connection between the first pipeline and the second pipeline, and the first ball core is connected to the inlet and the first pipeline, and the second ball core is connected to the outlet and the first pipeline, or the first ball core is connected to the inlet and the second pipeline, and the second ball core is connected to the outlet and the second pipeline; A reversing assembly connects the first ball core and the second ball core, and drives the first ball core and the second ball core to rotate simultaneously to switch the passage between the inlet and the outlet.

2. A dual-channel filter according to claim 1, characterized in that: The reversing assembly comprises a first valve stem, one end of which is connected to the first ball core, and the other end of which extends out of the housing and is coaxially fixedly connected to a first interlocking gear; The reversing assembly further includes a second valve stem, one end of which is connected to the second ball core, and the other end of which extends out of the housing and is coaxially fixedly connected to a second interlocking gear; The first interlocking gear is meshed with the second interlocking gear; The housing is provided with a driving member, and the driving member drives the first interlocking gear and the second interlocking gear to rotate.

3. A dual-channel filter according to claim 2, characterized in that: A first plug-in block is formed on one end of the first valve stem close to the first ball core, a first slot is formed in the first ball core corresponding to the first plug-in block, the first plug-in block is embedded in the first slot and plugged with the first ball core; A second plug-in block is formed at one end of the second valve stem close to the second ball core, and a second slot is formed in the second ball core corresponding to the second plug-in block. The second plug-in block is embedded in the second slot and plugged with the second ball core.

4. A dual-channel filter according to claim 2 or 3, characterized in that: The driving member includes a handle, and the handle is fixedly connected to an end of the first valve stem away from the first interlocking gear; or the handle is fixedly connected to an end of the second valve stem away from the second interlocking gear.

5. A dual-channel filter according to claim 2 or 3, characterized in that: The inner channels of the first ball core and the second ball core are both right-angle channels, and the first interlocking gear and the second interlocking gear are both half gears.

6. A dual-channel filter according to claim 1, characterized in that: A fixing sleeve is installed on the side of the shell facing away from the reversing assembly, one end of the fixing sleeve extends into the shell and is detachably fixedly connected to the shell; the end of the fixing sleeve extending into the shell is hollow, and the first filter cavity and the second filter cavity are respectively formed in the inner cavity corresponding to the fixing sleeve.

7. A dual-channel filter according to claim 6, characterized in that: A filter screen is coaxially mounted in the inner cavity of the fixed sleeve, and a spring is arranged between the bottom wall of the filter screen and the bottom wall of the inner cavity of the fixed sleeve; The two ends of the spring are respectively pressed against the bottom wall of the inner cavity of the fixing sleeve and the bottom wall of the filter screen, and the end of the filter screen away from its own bottom wall is pressed against the inner wall of the shell.

8. A dual-channel filter according to claim 6, characterized in that: A sealing gasket is tightly arranged between the end of the filter screen away from the bottom wall and the inner wall of the shell.

9. A dual-channel filter according to claim 1, characterized in that: A first fixing seat and a second fixing seat are respectively arranged on both sides of the first core in any radial direction on the shell, the first fixing seat and the second fixing seat are both hollow, and the first pipeline is formed in the first fixing seat, and the second pipeline is formed in the second fixing seat; A first valve seat is disposed at one end of the first fixed seat close to the first ball core, a second valve seat is disposed at one end of the second fixed seat close to the first ball core, and the first ball core is installed between the first valve seat and the second valve seat and is rotatably connected to the first valve seat and the second valve seat; A third fixing seat and a fourth fixing seat are respectively provided on both sides of the second core in any radial direction on the shell, and the second core is installed between the third fixing seat and the fourth fixing seat in the same manner as the first core is installed between the first fixing seat and the second fixing seat; The first pipeline is formed in the third fixing seat, and the second pipeline is formed in the fourth fixing seat.

10. A dual-channel filter according to claim 8, characterized in that: The first fixing seat, the second fixing seat, the third fixing seat and the fourth fixing seat are all detachably fixedly connected to the shell.

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