Valve plate filtering device

Abstract

The utility model relates to the technical field of pathological detection, aims to solve the problem of how to prolong the service life of a filter screen piece, and provides a valve plate filter device. The valve plate filtering device comprises a valve plate base and a filtering assembly. The surface of the valve plate base is sunken to form a containing cavity, a liquid inlet channel is formed in the side wall of the containing cavity, and a liquid outlet channel is formed in the bottom wall of the containing cavity. The filtering assembly comprises a fixing piece and a filtering net piece, the fixing piece is arranged in the containing cavity, one end of the fixing piece is connected with the periphery of an opening of the containing cavity, the other end of the fixing piece extends to the bottom wall of the containing cavity, and the peripheral face of the fixing piece and the side wall of the containing cavity define a filtering cavity; the liquid inlet channel, the filter cavity, the liquid flow channel and the liquid outlet channel are sequentially communicated, the filter screen piece is used for filtering a reagent flowing into the filter cavity from the liquid inlet channel, and the filter screen piece is arranged in the filter cavity and extends in the circumferential direction of the fixing piece, so that the filter area of the filter screen piece is increased, and blockage of the filter screen piece by impurity particles is delayed; and the effect of prolonging the service life of the filter screen piece is achieved.

Description

Technical Field

[0001] This application relates to the field of pathological testing technology, and more specifically, to a valve plate filter device. Background Technology

[0002] In the field of pathological testing, reagents are required to have high purity and few impurity particles. Generally, reagent filtration devices are used to filter reagents. These devices consist of single-piece filter elements through which the reagent flows, thereby reducing impurities and improving reagent purity.

[0003] In existing technologies, reagent filtration devices use a single filter element placed within the reagent pipeline. The narrow diameter of the pipeline results in a small filtration area for the single filter element, leading to rapid clogging by impurities and a short lifespan. Solving these technical problems is a matter that those skilled in the art need to consider. Utility Model Content

[0004] This application provides a valve plate filter device to address the problem of how to extend the service life of filter elements.

[0005] This application provides a valve plate filtration device, including a valve plate base and a filtration assembly. The valve plate base has a recessed cavity, with an inlet channel on the side wall and an outlet channel on the bottom wall. The filtration assembly includes a fixing member and a filter screen. The fixing member is located in the cavity, with one end connected to the periphery of the cavity opening and the other end extending to the bottom wall. The circumferential surface of the fixing member and the side wall of the cavity enclose a filtration cavity. The fixing member has a liquid flow channel, and the inlet channel, the filtration cavity, the liquid flow channel, and the outlet channel are sequentially connected. The filter screen is located in the filtration cavity and extends circumferentially along the fixing member. The filter screen is used to filter reagents flowing into the filtration cavity from the inlet channel.

[0006] Compared to existing technologies, the valve plate filter device provided in this embodiment forms a filter cavity between the peripheral surface of the fixing member and the side wall of the filter cavity by setting a receiving cavity in the valve plate base, sealing the opening of the receiving cavity at one end of the fixing member and sealing the bottom wall of the receiving cavity at the other end. The filter screen is disposed in the filter cavity and extends along the circumference of the fixing member, thereby increasing the filtration area of ​​the filter screen and delaying the clogging of the filter screen by impurity particles, so as to improve the service life of the filter screen.

[0007] In one possible implementation, the fixing member includes a first fixing seat and a second fixing seat. The first fixing seat is disposed at the opening of the receiving cavity and is threadedly connected to the periphery of the opening of the receiving cavity. The second fixing seat is disposed at the bottom wall of the receiving cavity. The liquid flow channel is disposed at the second fixing seat. The first fixing seat and the second fixing seat are detachably connected. One end of the filter screen is disposed at the first fixing seat and the other end is disposed at the second fixing seat.

[0008] In one possible implementation, the peripheral surface of the first fixing seat is recessed to form a first stepped groove, and the peripheral surface of the second fixing seat is recessed to form a second stepped groove. The first stepped groove, the second stepped groove, and the sidewall of the receiving cavity enclose the filter cavity to form the filter cavity, and the filter element extends from the first stepped groove to the second stepped groove.

[0009] In one possible implementation, the filter element includes a first filter and a second filter, which are spaced apart, with the first filter closer to the liquid inlet channel and the second filter closer to the liquid flow channel.

[0010] In one possible implementation, the pore size of the first filter screen is larger than that of the second filter screen.

[0011] In one possible implementation, the filter assembly further includes a first sealing ring and a second sealing ring. The first sealing ring is disposed on the circumferential surface of the fixing member and is used to seal the side wall of the receiving cavity. The second sealing ring is disposed on the circumferential surface of the liquid outlet channel and is used to seal the bottom wall of the receiving cavity.

[0012] In one possible implementation, the liquid flow channel includes a first channel and a second channel that communicate with each other. The first channel extends along the length of the fixture and communicates with the liquid outlet channel. The second channel extends radially along the fixture and communicates with the filter chamber.

[0013] In one possible implementation, the second channel has multiple liquid inlets, which are distributed on the periphery of the fixing member. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a valve plate filter device according to an embodiment of this application;

[0016] Figure 2 for Figure 1 A perspective view of the filter assembly of a valve plate filter device;

[0017] Figure 3 for Figure 1 Exploded view of the filter assembly of the valve plate filter device.

[0018] Figure 4 for Figure 1 A three-dimensional view showing the filter assembly of the valve plate filter device separated from the valve plate base.

[0019] Explanation of key component symbols:

[0020] 1. Valve plate filter device; 11. Valve plate base; 111. Receiving cavity; 112. Side wall; 113. Bottom wall; 114. Opening; 115. Liquid inlet channel; 116. Liquid outlet channel; 12. Filter chamber; 13. Filter assembly; 131. Fixing member; 132. First fixing seat; 1321. Cover; 1322. First threaded part; 1323. Connecting part; 1324. Threaded hole; 133. First stepped groove; 134. Second fixing seat; 1341. Liquid flow part; 1342. Second threaded part; 135. Second stepped groove; 136. Liquid flow channel; 1361. First channel; 1362. Second channel; 1363. Liquid inlet; 137. Filter screen; 1371. First filter screen; 1372. Second filter screen; 14. First sealing ring; 15. Second sealing ring. Detailed Implementation

[0021] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0022] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] Example

[0024] Please see Figures 1 to 4As shown, this embodiment provides a valve plate filter device 1 including a valve plate base 11 and a filter assembly 13. The surface of the valve plate base 11 is recessed to form a receiving cavity 111, the side wall 112 of the receiving cavity 111 is provided with a liquid inlet channel 115, and the bottom wall 113 of the receiving cavity 111 is provided with a liquid outlet channel 116. The filter assembly 13 includes a fixing member 131 and a filter screen 137. The fixing member 131 is disposed in the receiving cavity 111. One end of the fixing member 131 is connected to the periphery of the opening 114 of the receiving cavity 111, and the other end extends to the bottom wall 113 of the receiving cavity 111. The peripheral surface of the fixing member 131 and the side wall 112 of the receiving cavity 111 enclose a filter cavity 12. The fixing member 131 is provided with a liquid flow channel 136. The liquid inlet channel 115, the filter cavity 12, the liquid flow channel 136 and the liquid outlet channel 116 are connected in sequence. The filter screen 137 is disposed in the filter cavity 12 and extends along the circumference of the fixing member 131. The filter screen 137 is used to filter the reagent flowing into the filter cavity 12 from the liquid inlet channel 115.

[0025] The valve plate filter device 1 provided in this embodiment forms a filter cavity 12 between the peripheral surface of the fixing member 131 and the side wall 112 of the filter cavity 111 by providing a receiving cavity 111 in the valve plate base 11, sealing the opening 114 of the receiving cavity 111 at one end and sealing the bottom wall 113 of the receiving cavity 111 at the other end. The filter screen 137 is disposed in the filter cavity 12 and extends along the circumference of the fixing member 131, thereby increasing the filtration area of ​​the filter screen 137, delaying the clogging of the filter screen 137 by impurity particles, and improving the service life of the filter screen 137.

[0026] In this embodiment, the receiving cavity 111 is cylindrical, and the diameter of the middle part of the fixing member 131 is smaller than the diameter of the receiving cavity 111. Thus, a filter cavity 12 is formed between the circumferential surface of the fixing member 131 and the side wall 112 of the receiving cavity 111. The filter screen 137 is sleeved on the circumference of the fixing member 131 to increase the filtration area of ​​the filter screen 137, delay the clogging of the filter screen 137 by impurity particles, and improve the service life of the filter screen 137.

[0027] In one possible implementation, the fixing member 131 includes a first fixing seat 132 and a second fixing seat 134. The first fixing seat 132 is disposed at the opening 114 of the receiving cavity 111 and is threadedly connected to the periphery of the opening 114 of the receiving cavity 111. The second fixing seat 134 is disposed at the bottom wall 113 of the receiving cavity 111. The liquid flow channel 136 is disposed at the second fixing seat 134. The first fixing seat 132 and the second fixing seat 134 are detachably connected. One end of the filter screen 137 is disposed at the first fixing seat 132 and the other end is disposed at the second fixing seat 134.

[0028] In this embodiment, the first fixing seat 132 includes an integrally connected cover portion 1321, a first threaded portion 1322, and a connecting portion 1323. The diameters of the cover portion 1321, the first threaded portion 1322, and the connecting portion 1323 decrease sequentially. The cover portion 1321 is located around the periphery of the opening 114 of the receiving cavity 111. The first threaded portion 1322 is threadedly connected to the side wall 112 of the receiving cavity 111. The connecting portion 1323 extends toward the second fixing seat 134. The connecting portion 1323 is provided with a threaded hole 1324, through which the first fixing seat 132 is connected to the second fixing seat 134.

[0029] The second fixed seat 134 includes an integrally connected liquid flow portion 1341 and a second threaded portion 1342. The second threaded portion 1342 is detachably connected to the threaded hole 1324 of the connecting portion 1323. The liquid flow channel 136 is opened in the liquid flow portion 1341.

[0030] One end of the filter element 137 is fitted around the circumference of the connecting part 1323, and the other end is fitted around the circumference of the liquid flow part 1341. The reagent flows into the filter chamber 12 through the liquid inlet channel 115, and then the reagent is filtered by the filter element 137. The filtered reagent flows into the liquid outlet channel 116 through the liquid flow channel 136.

[0031] In one possible implementation, the peripheral surface of the first fixing seat 132 is recessed to form a first stepped groove 133, and the peripheral surface of the second fixing seat 134 is recessed to form a second stepped groove 135. The first stepped groove 133, the second stepped groove 135 and the side wall 112 of the receiving cavity 111 surround to form a filter cavity 12, and the filter element 137 extends from the first stepped groove 133 to the second stepped groove 135.

[0032] In this embodiment, the first stepped groove 133 is provided in the connecting part 1323, and the second stepped groove 135 is provided in the liquid flow part 1341.

[0033] When the filter element 137 is assembled to the fixing member 131, the first fixing seat 132 and the second fixing seat 134 are separated first, then the filter element 137 is put into the connecting part 1323, and then the threaded hole 1324 of the first fixing seat 132 is aligned with the second threaded part 1342 of the second fixing seat 134 to connect, so that the filter element 137 is fitted onto the fixing member 131.

[0034] In one possible implementation, the filter element 137 includes a first filter 1371 and a second filter 1372, which are spaced apart. The first filter 1371 is close to the liquid inlet channel 115, and the second filter 1372 is close to the liquid flow channel 136.

[0035] In this embodiment, the first stepped groove 133 has at least two stepped surfaces, and the second stepped groove 135 has at least two stepped surfaces, with the stepped surfaces of the first stepped groove 133 and the second stepped groove 135 corresponding one-to-one. The first filter screen 1371 and the second filter screen 1372 are respectively disposed on the stepped surfaces, which facilitates the assembly of the first filter screen 1371 and the second filter screen 1372.

[0036] In one possible implementation, the pore size of the first filter 1371 is larger than that of the second filter 1372.

[0037] In this embodiment, the reagent first passes through a first filter 1371, which is used to filter out coarse particulate impurities. The reagent then passes through a second filter 1372, which is used to filter out fine particulate impurities, thereby improving the purity of the filtered reagent.

[0038] In one possible implementation, the filter assembly 13 further includes a first sealing ring 14 and a second sealing ring 15. The first sealing ring 14 is disposed on the circumferential surface of the fixing member 131 and is used to seal the side wall 112 of the receiving cavity 111. The second sealing ring 15 is disposed on the circumferential surface of the liquid outlet channel 116 and is used to seal the bottom wall 113 of the receiving cavity 111.

[0039] In this embodiment, the first sealing ring 14 is disposed between the circumferential surface of the first fixing seat 132 and the side wall 112 of the receiving cavity 111 to reduce the outflow of reagent from the opening 114 of the receiving cavity 111. The second sealing ring 15 is disposed between the bottom surface of the second fixing seat 134 and the bottom wall 113 of the receiving cavity 111 to reduce the inflow of reagent from the bottom wall 113 of the receiving cavity 111 into the liquid outlet channel 116. The first sealing ring 14 and the second sealing ring 15 are used to improve the sealing performance of the filter cavity 12, so that the reagent passes through the liquid inlet channel 115, the filter cavity 12, the first filter screen 1371, the second filter screen 1372, the liquid flow channel 136 and the liquid outlet channel 116 in sequence, thereby improving the purity of the filtered reagent.

[0040] In one possible implementation, the liquid flow channel 136 includes a first channel 1361 and a second channel 1362 that are connected. The first channel 1361 extends along the length of the fixing member 131 and is connected to the liquid outlet channel 116. The second channel 1362 extends radially along the fixing member 131 and is connected to the filter chamber 12.

[0041] In this embodiment, the cross-sectional shape of the liquid flow channel 136 is T-shaped, the second channel 1362 extends radially along the liquid flow section 1341, the second filter screen 1372 is disposed in the circumference of the liquid flow section 1341, the second filter screen 1372 filters the fine particulate impurities of the reagent, and then the filtered reagent flows into the second channel 1362, and the reagent flowing into the second channel 1362 flows out through the first channel 1361 and the liquid outlet channel 116.

[0042] In one possible implementation, the second channel 1362 has multiple liquid inlets 1363, which are distributed on the periphery of the fixing member 131.

[0043] In this embodiment, the second channel 1362 has multiple liquid inlets 1363, and the second filter screen 1372 surrounds the multiple liquid inlets 1363. This helps to increase the filtration area of ​​the second filter screen 1372 and the first filter screen 1371, delay the clogging of the filter screen 137 by impurity particles, and improve the service life of the filter screen 137.

[0044] In summary, the valve plate filter device 1 provided in this embodiment forms a filter cavity 12 between the circumferential surface of the fixing member 131 and the side wall 112 of the filter cavity 111 by providing a receiving cavity 111 in the valve plate base 11, sealing the opening 114 of the receiving cavity 111 at one end and sealing the bottom wall 113 of the receiving cavity 111 at the other end. The filter screen 137 is disposed in the filter cavity 12 and extends along the circumferential direction of the fixing member 131, thereby increasing the filtration area of ​​the filter screen 137, delaying the clogging of the filter screen 137 by impurity particles, and improving the service life of the filter screen 137.

[0045] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A valve plate filter apparatus, characterized by, The valve plate filter device comprises a valve plate base, a filter assembly and a valve plate. The valve plate base has a surface with a receiving cavity formed therein, a side wall of the receiving cavity is provided with an inlet channel, and a bottom wall of the receiving cavity is provided with an outlet channel. The filter assembly comprises a fixing member and a filter screen member, the fixing member is arranged in the receiving cavity, one end of the fixing member is connected to a periphery of an opening of the receiving cavity, and the other end of the fixing member extends to the bottom wall of the receiving cavity, a circumferential surface of the fixing member and the side wall of the receiving cavity form a filter cavity, the fixing member is provided with a liquid flow channel, the inlet channel, the filter cavity, the liquid flow channel and the outlet channel are sequentially communicated, and the filter screen member is arranged in the filter cavity and extends along the circumferential direction of the fixing member, the filter screen member is used for filtering reagents flowing into the filter cavity from the inlet channel.

2. The valve plate filter device according to claim 1, wherein the fixing member comprises a first fixing seat and a second fixing seat, the first fixing seat is arranged at the opening of the receiving cavity, the first fixing seat is threadedly connected to the periphery of the opening of the receiving cavity, the second fixing seat is arranged at the bottom wall of the receiving cavity, the liquid flow channel is arranged in the second fixing seat, the first fixing seat and the second fixing seat are detachably connected, one end of the filter screen member is arranged in the first fixing seat, and the other end of the filter screen member is arranged in the second fixing seat.

3. The valve plate filter device according to claim 2, wherein a circumferential surface of the first fixing seat is recessed to form a first stepped groove, a circumferential surface of the second fixing seat is recessed to form a second stepped groove, the first stepped groove, the second stepped groove and the side wall of the receiving cavity form the filter cavity, and the filter screen member extends from the first stepped groove to the second stepped groove.

4. The valve plate filter device according to claim 1, wherein the filter screen member comprises a first filter screen and a second filter screen, the first filter screen and the second filter screen are arranged in a spaced manner, the first filter screen is close to the inlet channel, and the second filter screen is close to the liquid flow channel.

5. The valve plate filter device according to claim 4, wherein a filter pore size of the first filter screen is larger than a filter pore size of the second filter screen.

6. The valve plate filter device according to claim 1, wherein the filter assembly further comprises a first sealing ring and a second sealing ring, the first sealing ring is arranged on the circumferential surface of the fixing member, the first sealing ring is used for sealing the side wall of the receiving cavity, the second sealing ring is arranged in the circumferential direction of the outlet channel, and the second sealing ring is used for sealing the bottom wall of the receiving cavity.

7. The valve plate filter device according to claim 1, wherein the liquid flow channel comprises a first channel and a second channel which are communicated, the first channel extends along the length direction of the fixing member, the first channel is communicated with the outlet channel, and the second channel extends along the radial direction of the fixing member, and the second channel is communicated with the filter cavity.

8. The valve plate filter device according to claim 7, wherein the second channel is provided with a plurality of inlet openings, and the plurality of inlet openings are distributed on the circumferential surface of the fixing member. ​ ​ ​ ​ ​ ​ ​

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