Filter element structure of sampling probe

Abstract

The filter element structure comprises a cavity, a fixed seat is arranged in the cavity, a screw rod is inserted in the middle of one side, facing an opening of the cavity, of the fixed seat, sintered filter elements are arranged on two sides of the screw rod, the sintered filter elements are connected to a handle base, and the handle base is connected with a handle. And the handle base is mounted on the cavity through a dismounting assembly. The handle is pressurized, the telescopic screw extrudes the spring to press the sintered filter element into the cavity until the sintered filter element is limited, the handle is pressed and rotated, the locking plate is clamped into the limiting screw of the cavity, at the moment, the handle is loosened, the spring rebounds, the locking plate can abut against the limiting screw, and fixing is completed. The volume increasing and reducing amount of the sintered filter element under the action of high and low temperatures or in the production process can be balanced, the constant axial contact force can be kept, the service life of the sintered filter element and collision interference in the transportation process can be guaranteed, and the stability and reliability of equipment are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a filter core structure of sampling probe. BACKGROUND

[0002] With the increasingly stringent national control requirements for pollutant emission, flue gas pollutant analysis and testing system is increasingly important. At present, most of the flue gas sampling devices adopt the heating extraction mode to prevent the loss of gas components. The current flue gas sampling probe is divided into two categories: direct extraction and dilution extraction.

[0003] The current sampling probe filter core installation mode adopts screw fixing, which is inconvenient for timely disassembly and replacement. The replacement steps of the filter core are complicated and have low practicability. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a filter core structure of sampling probe to solve the problems in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a filter core structure of sampling probe, comprising a cavity, a fixing seat is arranged in the cavity, a screw rod is centrally inserted on the side of the fixing seat facing the opening of the cavity, sintered filter cores are arranged on both sides of the screw rod, the sintered filter cores are connected to a handle base, and the handle base is installed on the cavity through a disassembly and assembly component.

[0006] Preferably, the disassembly and assembly component comprises a groove opened on the surface of the handle base, and a telescopic screw rod is inserted in the groove.

[0007] Preferably, a spring is sleeved on the outside of one end of the telescopic screw rod in the groove.

[0008] Preferably, a handle is connected to the end of the telescopic screw rod away from the handle base.

[0009] Preferably, threaded grooves are arranged on both sides of the opening of the cavity, and a locking plate is arranged on the telescopic screw rod.

[0010] Preferably, a through hole is opened on the surface of the locking plate, a limiting screw is inserted in the through hole, and the limiting screw extends through the through hole and into the threaded groove.

[0011] Preferably, an O-ring is arranged on the outside of the handle base.

[0012] The technical effect and advantages of the utility model are: the filter core structure of the sampling probe, pressurizing the handle, the telescopic screw rod extrudes the spring to press the sintered filter core into the cavity until the limiting, press and rotate the handle, the locking plate is clamped into the limiting screw of the cavity, at this moment, the handle is loosened, the spring rebounds, the locking plate can push against the limiting screw, the fixing is completed, through the handle base and the spring, the volume shrinkage of the sintered filter core under the action of high and low temperature or in the production process and the constant axial contact force can be balanced, which is also beneficial to guarantee the service life of the sintered filter core and the collision interference in the transportation process, improves the stability and reliability of the equipment. In addition, the method of replacing the filter core more conveniently can be provided for the user, which can be completed by one hand, and the operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the sectional view of the whole of the utility model;

[0014] Figure 2 It is the sectional view of the screw rod of the utility model;

[0015] Figure 3 It is the sectional view of the cavity of the utility model.

[0016] In the drawing: 1, handle; 2, telescopic screw rod; 3, locking plate; 4, handle base; 5, spring; 6, O ring; 7, sintered filter core; 8, screw rod; 9, fixed seat; 10, cavity; 11, limiting screw. DETAILED DESCRIPTION

[0017] The technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment.

[0018] In order to replace the sintered filter core 7 conveniently, as shown in Figure 1 , Figure 2 and Figure 3 , including the cavity 10, the fixed seat 9 is arranged in the cavity 10, the screw rod 8 is centrally inserted into the fixed seat 9 towards the opening side of the cavity 10, the sintered filter core 7 is arranged on both sides of the screw rod 8, the sintered filter core 7 is connected to the handle base 4, the handle base 4 is installed on the cavity 10 through the dismounting assembly, the locking plate 3 is clamped into the limiting screw 11 of the cavity 10 by pressing and rotating the handle 1, at this moment, the handle is loosened, the spring 5 rebounds, the locking plate 3 can push against the limiting screw 11, the fixing is completed, through the handle base 4 and the spring 5, the volume shrinkage of the sintered filter core 7 under the action of high and low temperature or in the production process and the constant axial contact force can be balanced, which is also beneficial to guarantee the service life of the sintered filter core 7 and the collision interference in the transportation process, improves the stability and reliability of the equipment. In addition, the method of replacing the filter core more conveniently can be provided for the user.

[0019] In order to reduce the cost of later maintenance, as shown inFigure 1 、 Figure 2 and Figure 3 As shown in the figure, the disassembly assembly comprises a groove opened on the surface of the handle base 4, the telescopic screw rod 2 is inserted into the groove, the outer side of one end of the telescopic screw rod 2 in the groove is sleeved with the spring 5, the handle 1 is moved towards the cavity 10 by extruding, the telescopic screw rod 2 can extrude the spring 5 in the groove, after the sintered filter element 7 is fixed in the cavity 10, the handle 1 is rotated and loosened, the spring 5 can rebound, the reaction force is applied to the locking plate 3, the limiting screw 11 on the locking plate 3 is inserted into the threaded groove, the locking plate 3 is pressed against the limiting screw 11, and the fixing of the sintered filter element 7 is completed. The telescopic screw rod 2 is connected with the handle 1 at the end away from the handle base 4. Threaded grooves are opened on both sides of the opening of the cavity 10, and the locking plate 3 is arranged on the telescopic screw rod 2. A through hole is opened on the surface of the locking plate 3, the limiting screw 11 is inserted into the through hole, and the limiting screw 11 extends through the through hole and into the threaded groove. The outer side of the handle base 4 is provided with the O-shaped ring 6. The installed sintered filter element 7 and the fixing seat 9 are put into the cavity 10, the handle 1 is pressed, the telescopic screw rod 2 extrudes the spring 5, the sintered filter element 7 is pressed into the cavity 10 until the limiting position. The handle 1 is pressed and rotated, the locking plate 3 is clamped into the limiting screw 11 of the cavity 10, at this time, the handle 1 is loosened, the spring 5 rebounds, and the locking plate 3 is pressed against the limiting screw 11. The sintered filter element 7 is pressed into the cavity 10 through the handle 1, and the reaction force applied by the spring 5 in the handle base 4 makes the quick locking plate 3 press against the limiting screw 11 in the cavity 10. The volume shrinkage of the filter element under the action of high and low temperature or in the production process is balanced, and the constant axial contact force is maintained, which is also beneficial to guarantee the service life of the filter element and the collision interference in the transportation process, improve the stability and reliability of the equipment. In addition, this design can also provide a more convenient method for users to replace the filter element, which can be completed by one hand, and the operation is more convenient. The sintered filter element 7 is designed to be detachable, and a Teflon gasket is used in the sealing part, which can avoid air leakage caused by errors in the machining process and reduce the maintenance cost in the later period.

[0020] In use, first, the handle 1, the telescopic screw rod 2, the locking plate 3, the handle base 4, the spring 5, the O-shaped ring 6 and the screw rod 8 are assembled in sequence, the sintered filter element 7 is put into the fixing groove of the handle base 4, the sintered filter element 7 is screwed into the screw rod 8, the wrench is tightened, the handle 1 is pressed and rotated, the locking plate 3 is clamped into the limiting screw 11 of the cavity 10, at this time, the handle 1 is loosened, the spring 5 rebounds, and the locking plate 3 is pressed against the limiting screw 11. The sintered filter element 7 is pressed into the cavity 10 through the handle 1, and the reaction force applied by the spring 5 in the handle base 4 makes the quick locking plate 3 press against the limiting screw 11 in the cavity 10.

[0021] It should be noted that the above only the preferred embodiments of the present application, and is not intended to limit the present application.

Claims

1. A filter cartridge structure for a sampling probe, characterized by, The utility model relates to a sintering filter cartridge, which comprises a cavity (10) provided with a fixing seat (9) in the cavity (10), a screw rod (8) centrally inserted into the opening side of the cavity (10), sintering filter cartridges (7) arranged on both sides of the screw rod (8), and a handle base (4) connected to the sintering filter cartridges (7), wherein the handle base (4) is installed on the cavity (10) through a detachable assembly.

2. The filter cartridge structure of a sampling probe according to claim 1, characterized by: The detachable assembly comprises a groove opened on the surface of the handle base (4), and a telescopic screw rod (2) is inserted into the groove.

3. The filter cartridge structure of a sampling probe according to claim 2, characterized by: The telescopic screw rod (2) is sleeved with a spring (5) outside one end in the groove.

4. The filter cartridge structure of a sampling probe according to claim 3, characterized by: The telescopic screw rod (2) is connected with a handle (1) at one end away from the handle base (4).

5. The filter cartridge structure of a sampling probe according to claim 4, characterized by: Threaded grooves are opened on both sides of the opening of the cavity (10), and a locking plate (3) is arranged on the telescopic screw rod (2).

6. The filter cartridge structure of a sampling probe according to claim 5, characterized by: A through hole is opened on the surface of the locking plate (3), a limiting screw (11) is inserted into the through hole, and the limiting screw (11) extends through the through hole and into the threaded groove.

7. The filter cartridge structure of a sampling probe according to claim 1, characterized by: An O-shaped ring (6) is arranged outside the handle base (4).

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