Auxiliary driving structure for needle type filter

Abstract

The auxiliary driving structure comprises a supporting base, the supporting base is provided with a containing cavity penetrating through the rear end of the supporting base, and the top end of the supporting base is connected with a bearing plate for sealing the top end of the containing cavity; a base notch communicated with the containing cavity is formed in the rear end of the supporting base, a fixing frame located at the base notch is connected to the supporting base, a needle cylinder handle clamping groove is formed in the top end of the fixing frame, and a receding through opening is formed in the bottom end of the fixing frame; a driving device is further arranged on the supporting base, the telescopic end of the driving device is connected with a pushing frame, the pushing frame is connected with a movable frame located behind the fixed frame, and a piston handle clamping groove is formed in the top end of the movable frame. According to the utility model, through the matching of the movable frame and the fixed frame, sample liquid in the needle cylinder can be pushed out of the filter and flows into the sample cylinder to complete the filtering pretreatment operation of a sample, so that the workload of an operator can be effectively reduced, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filter-related devices, in particular to an auxiliary driving structure for a needle filter. Background Art

[0002] In the water quality testing business, instruments such as inductively coupled plasma emission spectrometer (ICP), inductively coupled plasma mass spectrometer (ICP-MS), and ion chromatograph are usually used to determine the elemental composition and content of the sample. Before being put into the instrument for analysis, the sample is usually pretreated. Specifically, it is filtered using a syringe filter and a 0.45μm filter head until 10ml of filtered sample is obtained. Most of the existing pretreatment filtration operations are performed by manually pressing the syringe filter, but when the sample is relatively turbid and the number of samples required is large, it will consume a lot of physical strength of the operator and will also affect the detection efficiency. Utility Model Content

[0003] The main purpose of the utility model is to provide an auxiliary driving structure for a needle filter, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The auxiliary drive structure for the needle filter comprises a support base, the support base has a receiving cavity penetrating the rear end thereof, and the top end of the support base is connected to a bearing plate closing the top end of the receiving cavity;

[0006] The rear end of the support base has a base notch connected to the accommodating cavity, and the support base is connected to a fixing frame located at the base notch, the top of the fixing frame is provided with a syringe handle slot, and the bottom of the fixing frame is provided with a clearance opening;

[0007] The support base is also provided with a driving device located in the accommodating cavity. The telescopic end of the driving device is connected to a pushing frame that can slide relative to the accommodating cavity and pass through the clearance opening. The pushing frame is connected to a movable frame located behind the fixed frame. The top of the movable frame is provided with a piston handle slot.

[0008] Furthermore, the top end of the fixing frame is also provided with a fixing recess connected to the syringe handle recess;

[0009] The top end of the movable frame is also provided with a movable yielding groove which is communicated with the piston handle clamping groove.

[0010] Furthermore, a limiting slide groove with a small opening and a large inner cavity is provided at the top of the pushing rack;

[0011] The bottom end of the fixing frame is provided with a limiting sliding block which is located at the clearance opening and can cooperate with the limiting sliding groove.

[0012] Furthermore, the pushing rack is provided with a plurality of movable plug holes arranged in a front-to-back direction at the bottom of the limiting slide groove;

[0013] The bottom end of the movable frame is provided with an movable connecting foot which can be matched with the movable socket.

[0014] Furthermore, the bottom end of the fixing frame has two fixed connection feet arranged at intervals, and the two fixed connection feet together form the clearance opening;

[0015] The support base is provided with a fixing plug hole matched with the fixing connecting foot at the base notch.

[0016] Furthermore, the bearing plate is arranged in the form of an arc-shaped plate.

[0017] Furthermore, a flexible limiting pad is arranged on the carrying plate.

[0018] Furthermore, a control mainboard for controlling the driving device is arranged in the accommodating cavity;

[0019] A control button electrically connected to the control mainboard is arranged on the outer surface of the support base.

[0020] Compared with the prior art, the utility model has the following beneficial effects: in the utility model, the fixed frame and the movable frame are arranged to respectively position the syringe handle and the piston column handle, and then the driving device and the pushing frame are arranged to drive the movable frame to move in the direction close to the fixed frame, so that the sample liquid in the syringe can be pushed out of the filter and flow into the sample tube to perform a pre-treatment operation of filtering the sample, thus effectively reducing the workload of the operator and effectively improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the auxiliary drive structure for the needle filter of the utility model;

[0022] Figure 2 and Figure 3 It is a structural schematic diagram of a support base and a fixing frame in the auxiliary driving structure for a needle filter of the utility model;

[0023] Figure 4 It is a structural schematic diagram of a fixing frame in an auxiliary driving structure for a needle filter of the utility model;

[0024] Figure 5 and Figure 6 The utility model is a structural schematic diagram of a movable frame, a pushing frame and a driving device in the auxiliary driving structure for a needle filter.

[0025] In the figure: 1. Support base; 2. Loading plate; 3. Control button; 4. Sample cylinder; 5. Syringe; 6. Syringe handle; 7. Piston column; 8. Piston handle; 9. Movable frame; 91. Movable socket; 92. Movable connecting foot; 93. Piston handle slot; 94. Movable clearance slot; 10. Pushing frame; 101. Limiting slide slot; 11. Fixed frame; 111. Syringe handle slot; 112. Fixed connecting foot; 113. Clearance port; 114. Fixed clearance slot; 12. Base notch; 13. Driving device; 14. Limiting slider; 15. Filter; 16. Fixed socket; 17. Flexible limiting pad. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0027] like Figure 1-4 As shown, the auxiliary driving structure for the needle filter includes a support base 1, the support base 1 has a receiving cavity penetrating the rear end thereof, and the top end of the support base 1 is connected to a bearing plate 2 that closes the top end of the receiving cavity;

[0028] The rear end of the support base 1 has a base notch 12 connected to the accommodating cavity, and the support base 1 is connected to a fixing frame 11 located at the base notch 12, the top of the fixing frame 11 is provided with a syringe handle slot 111, and the bottom of the fixing frame 11 is provided with a clearance opening 113;

[0029] The support base 1 is also provided with a driving device 13 located in the accommodating cavity. The telescopic end of the driving device 13 is connected to a pushing frame 10 that can slide relative to the accommodating cavity and pass through the clearance opening 113. The pushing frame 10 is connected to a movable frame 9 located behind the fixed frame 11. The top of the movable frame 9 is provided with a piston handle slot 93.

[0030] Most existing needle filters include a syringe 5 and a piston column 7 adapted to the syringe 5. The rear end of the syringe 5 has a syringe handle 6 for easy application of force, and the rear end of the piston column 7 has a piston handle 8 for easy application of force. The front end of the syringe 5 is detachably connected to a filter 15, which can be directly connected to the sample tube 4 through the filter 15.

[0031] In this embodiment, in order to realize the driving device 13 driving the pushing frame 10 in the front and rear directions, the driving device 13 can be an electric push rod, a small cylinder, etc.

[0032] When this embodiment is used, the sample liquid is drawn into the syringe 5, and then the filter 15 is installed and connected to the sample cylinder 4, and the aforementioned connected components are placed on the carrier plate 2, and the driving device 13 is controlled to move the push frame 10 to adjust the distance between the movable frame 9 and the fixed frame 11, so that: the syringe handle 6 can be clamped on the syringe handle clamping groove 111, and the piston handle 8 can be clamped on the piston handle clamping groove 93. Then the driving device 13 is controlled to move the push frame 10 forward, thereby driving the movable frame 9 to move forward to compress the piston column 7, so that the sample liquid in the syringe 5 is pushed out of the filter 15 and flows into the sample cylinder 4, so as to perform a pre-treatment operation of filtering the sample, which can effectively reduce the workload of the operator and effectively improve the work efficiency.

[0033] When in the zero position, the movable frame 9 can be stored in the base notch 12, thus reducing the risk of accidental collision.

[0034] Preferably, the top end of the fixing frame 11 is also provided with a fixing recess 114 connected to the syringe handle recess 111;

[0035] The top end of the movable frame 9 is also provided with a movable clearance groove 94 which is connected with the piston handle groove 93 .

[0036] In this embodiment, the fixed clearance groove 114 can better limit the syringe 5 and the piston column 7; the movable clearance groove 94 can better limit the piston column 7, so that the stability of the relative movement between the piston column 7 and the syringe 5 can be effectively improved.

[0037] Preferably, a limiting slide groove 101 with a small opening and a large inner cavity is provided at the top of the pushing rack 10;

[0038] A limiting sliding block 14 is disposed at the bottom end of the fixing frame 11 and is located at the position-making opening 113 and can cooperate with the limiting sliding groove 101 .

[0039] In this embodiment, the cooperation between the limiting sliding block 14 and the limiting sliding groove 101 can improve the stability of the forward and backward movement of the pushing frame 10, thereby improving the stability of the compression piston column 7.

[0040] Preferably, the pushing rack 10 is provided with a plurality of movable plug holes 91 arranged in a front-to-back direction at the bottom of the limiting slide groove 101;

[0041] The bottom end of the movable frame 9 has an movable connecting foot 92 that can cooperate with the movable socket 91.

[0042] In this embodiment, a suitable movable plug hole 91 can be selected to insert the movable connecting pin 92 according to the dosage of the sample liquid in the syringe 5 to adjust the distance between the movable frame 9 and the fixed frame 11 .

[0043] Preferably, the bottom end of the fixing frame 11 has two fixed connection feet 112 arranged at intervals, and the two fixed connection feet 112 together form the clearance opening 113;

[0044] The support base 1 is provided with a fixing hole 16 at the base notch 12 to cooperate with the fixing connection foot 112 .

[0045] In this embodiment, the fixing frame 11 is detachably connected to the supporting base 1 , and a suitable fixing frame 11 can be selected according to the size of the syringe 5 .

[0046] Preferably, the carrying plate 2 is arranged in an arc-shaped plate, so that the syringe 5, the filter 15 and the sample cylinder 4 can be easily placed.

[0047] Preferably, a flexible limiting pad 17 is provided on the carrier plate 2. The flexible limiting pad 17 can be made of sponge material, so that the syringe 5, the filter 15 and the sample tube 4 can be wrapped and limited, effectively reducing the possibility of accidental movement.

[0048] Preferably, a control mainboard for controlling the driving device 13 is arranged in the accommodating cavity;

[0049] A control button 3 electrically connected to the control mainboard is arranged on the outer surface of the support base 1 .

[0050] Specifically, a drive device control module is installed on the control main board, and the drive device control module is used to control the extension direction, extension speed and pushing distance of the drive device 13. The control button 3 can facilitate the operator to send instructions for controlling the drive device 13 to the control main board.

[0051] The circuits, electronic components and control modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to software and methods.

[0052] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. Auxiliary drive structure for needle filter, characterized by: The support base (1) comprises a support base (1), the support base (1) having a receiving cavity penetrating the rear end thereof, and the top end of the support base (1) is connected to a bearing plate (2) which closes the top end of the receiving cavity; The rear end of the support base (1) has a base notch (12) communicating with the accommodating cavity, the support base (1) is connected to a fixing frame (11) located at the base notch (12), the top end of the fixing frame (11) is provided with a syringe handle slot (111), and the bottom end of the fixing frame (11) is provided with a clearance opening (113); The support base (1) is also provided with a driving device (13) located in the accommodating cavity. The telescopic end of the driving device (13) is connected to a pushing frame (10) which can slide relative to the accommodating cavity and pass through a clearance opening (113). The pushing frame (10) is connected to a movable frame (9) located behind the fixed frame (11). The top end of the movable frame (9) is provided with a piston handle slot (93).

2. The auxiliary drive structure for a needle filter according to claim 1, characterized in that: The top end of the fixed frame (11) is also provided with a fixed clearance groove (114) which is in communication with the syringe handle slot (111); The top end of the movable frame (9) is also provided with a movable clearance groove (94) which is in communication with the piston handle clamping groove (93).

3. The auxiliary drive structure for a needle filter according to claim 1, characterized in that: The top of the pushing frame (10) is provided with a limiting sliding groove (101) with a small opening and a large inner cavity; The bottom end of the fixing frame (11) is provided with a limiting sliding block (14) located at the clearance opening (113) and capable of cooperating with the limiting sliding groove (101).

4. The auxiliary drive structure for a needle filter according to claim 3, characterized in that: The pushing frame (10) is provided with a plurality of movable plug holes (91) arranged in a front-to-back direction at the bottom of the limiting sliding groove (101); The bottom end of the movable frame (9) has a movable connecting foot (92) that can cooperate with the movable socket (91).

5. The auxiliary drive structure for a needle filter according to claim 1, characterized in that: The bottom end of the fixing frame (11) has two fixed connection feet (112) arranged at intervals, and the two fixed connection feet (112) jointly form the clearance opening (113); The support base (1) is provided with a fixing socket (16) at the base notch (12) and is matched with the fixing connection foot (112).

6. The auxiliary drive structure for a needle filter according to claim 1, characterized in that: The bearing plate (2) is arranged in the form of an arc-shaped plate.

7. The auxiliary drive structure for a needle filter according to claim 6, characterized in that: A flexible limiting pad (17) is provided on the bearing plate (2).

8. The auxiliary drive structure for a needle filter according to any one of claims 1 to 7, characterized in that: A control mainboard for controlling the driving device (13) is arranged in the accommodating cavity; A control button (3) electrically connected to the control mainboard is arranged on the outer surface of the support base (1).

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