Multi-way valve of novel dewatering machine

Abstract

The utility model discloses a novel multi-way valve of a dewatering machine, which relates to the technical field of medical instruments and comprises a valve body component and a fixing cover, the valve body component comprises a valve body, a liquid inlet slot, a liquid outlet slot, a positioning bump, a liquid outlet connector and a liquid inlet connector; a pipeline switching assembly extending into the valve body is arranged above the fixing cover and used for switching the conduction states of the multiple liquid outlet hole grooves and the liquid inlet hole grooves. A sensing assembly is further arranged between the top of the fixing cover and the pipeline switching assembly, and the sensing assembly is used for achieving sensing positioning of the operation position of the pipeline switching assembly. Through the arrangement of the valve body with the 17 liquid inlet hole grooves and the one liquid outlet hole groove and the pipeline switching assembly, switching of the conduction states of the 17 liquid inlet hole grooves and the liquid outlet hole grooves can be achieved through the pipeline switching assembly, then conveying management of 17-way reagents is achieved, the overall structure is compact, and operation is easy.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a multi-way valve for a novel dehydration machine. Background Technology

[0002] A pathological tissue dehydrator is a commonly used device in medical pathology, primarily used to remove water from pathological tissue specimens so that they can be embedded in paraffin, sectioned, and stained. The principle of a pathological tissue dehydrator is to replace the water inside the tissue or cells by using a dehydrating agent. Since paraffin is insoluble in water, the tissue dehydrator, a pathology testing instrument, cannot perform subsequent paraffin sectioning without removing the water. Therefore, dehydration is one of the key processes in slide preparation.

[0003] Dehydration of pathological tissues requires the use of various reagents and the control of multiple valves. The installation of multiple valves takes up a lot of space, resulting in a large overall size of the device. Therefore, a new type of multi-way valve for dehydration machines is provided. Utility Model Content

[0004] The purpose of this utility model is to provide a new type of multi-way valve for a dehydration machine in order to solve the problems mentioned above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-way valve for a novel dehydration machine, comprising a valve body assembly and a fixing cover, wherein the valve body assembly comprises a valve body, an inlet slot, an outlet slot, a positioning protrusion, an outlet connector, and an inlet connector;

[0006] The valve body is installed inside the fixed cover. The liquid outlet groove is opened in the middle of the bottom of the valve body and extends through to the outside of the valve body. Multiple liquid inlet grooves are provided. The multiple liquid inlet grooves are arranged in a ring around the liquid outlet groove at the bottom of the valve body. The multiple liquid inlet grooves extend through to the bottom and side of the valve body respectively. The liquid outlet connector is fixed to the outside of the valve body and is connected and communicates with the liquid outlet groove. The liquid inlet connector is fixed to the outside and bottom of the valve body and is connected and communicates with the liquid inlet groove.

[0007] Above the fixed cover is a pipeline switching assembly extending into the valve body. The pipeline switching assembly is used to switch the conduction state of multiple liquid outlet slots and liquid inlet slots.

[0008] A sensing component is also provided between the top of the fixed cover and the pipeline switching component, which is used to sense and locate the operating position of the pipeline switching component.

[0009] As a further embodiment of this utility model: the pipeline switching assembly includes a stepper motor, a convex rotating part, a bearing, a rotating valve core, a straight groove channel, a fixed valve core, a connecting through hole, and a central through hole;

[0010] The stepper motor is fixed to the top of the fixed cover by a fixed base. The bottom of the output end of the stepper motor is limited and sleeved with the convex rotating part. The convex rotating part is rotatably connected to the inside of the valve body through a bearing.

[0011] The rotary valve core is limited and engaged at the bottom of the convex rotating part, and the straight groove channel is opened on the lower surface of the rotary valve core;

[0012] The central through hole is located at the top center of the fixed valve core. Multiple docking through holes are provided, and the multiple docking through holes are arranged in a ring around the central through hole at the top of the fixed valve core. The docking through holes and the central through hole completely penetrate the bottom of the fixed valve core. The fixed valve core is limited and installed inside the valve body and is respectively attached to the bottom of the inner wall of the valve body and the lower surface of the rotating valve core. The docking through holes are aligned with the position of the liquid inlet groove, and the central through hole is aligned with the position of the liquid outlet groove. The two ends of the straight groove channel are respectively in contact with and connected to the central through hole and one docking through hole.

[0013] A stepper motor drives the rotating valve core to rotate circumferentially, thereby switching the conduction state between multiple connecting through holes and the central through hole, and subsequently switching the conduction state between multiple liquid inlet slots and liquid outlet slots.

[0014] As a further improvement of this utility model: the top of the inner wall of the valve body is integrally formed with a positioning protrusion, and the bottom of the fixed valve core is integrally formed with a positioning groove. The fixed valve core is sleeved on the outside of the positioning protrusion through the positioning groove to achieve alignment and positioning of the connecting through hole and the liquid inlet groove.

[0015] As a further embodiment of this utility model: a first sealing ring is provided between the outer side of the large-diameter portion of the convex rotating part and the inner wall of the valve body; a butterfly spring is provided between the lower surface of the convex rotating part and the upper surface of the rotating valve core; and a second sealing ring is provided on the lower surface of the fixed valve core at the outer part of the connecting through hole and the liquid inlet groove, as well as the central through hole and the liquid outlet groove.

[0016] As a further embodiment of this utility model: the sensing component includes an optical disc, a first concave photoelectric sensor, a Z-shaped sensing sheet, and a second concave photoelectric sensor;

[0017] The first concave photoelectric sensor and the second concave photoelectric sensor are symmetrically mounted on the top of the fixed cover with the convex rotating part as the center. The optical disc is fixedly mounted on the outside of the convex rotating part and passes through the groove of the first concave photoelectric sensor. The edge of the optical disc has notches corresponding to the positions of multiple docking through holes.

[0018] The Z-shaped sensor is mounted on the upper surface of the optical disc, and the horizontal running trajectory of the top part of the Z-shaped sensor passes through the groove of the second concave photoelectric sensor. The Z-shaped sensor and the straight groove channel are aligned vertically.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] By setting up a valve body with 17 liquid inlet slots and 1 liquid outlet slot, as well as a pipeline switching component, the 17 liquid inlet slots and the liquid outlet slot can be switched to be connected, thereby realizing the delivery management of 17 reagents. The overall structure is compact and the operation is simple. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram showing the disassembled stepper motor and convex rotating part of this utility model;

[0023] Figure 3 This is a disassembled schematic diagram of some parts of the pipeline switching assembly and the valve body assembly of this utility model;

[0024] Figure 4 This is another perspective view showing the disassembled parts of the pipeline switching component and the valve body component of this utility model.

[0025] Figure 5 This is a structural distribution diagram of the liquid inlet groove, liquid outlet groove, and valve body of this utility model.

[0026] Figure 6 This is a perspective view of the pipeline path of the liquid inlet channel and the liquid outlet channel of this utility model.

[0027] In the diagram: 1. Valve body assembly; 101. Valve body; 102. Inlet groove; 103. Outlet groove; 104. Positioning protrusion; 105. Outlet connector; 106. Inlet connector; 2. Pipeline switching assembly; 201. Stepper motor; 202. Convex rotating part; 203. Bearing; 204. First sealing ring; 205. Button spring; 206. Rotating valve core; 207. Straight groove channel; 208. Fixed valve core; 209. Connecting through hole; 210. Center through hole; 211. Positioning groove; 212. Second sealing ring; 3. Fixing base; 4. Fixing cover; 5. Sensing assembly; 501. Optical disc; 502. First concave photoelectric sensor; 503. Z-shaped sensing plate; 504. Second concave photoelectric sensor. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-6 In this embodiment of the present invention, a multi-way valve for a novel dehydration machine includes a valve body assembly 1 and a fixing cover 4. The valve body assembly 1 includes a valve body 101, an inlet groove 102, an outlet groove 103, a positioning protrusion 104, an outlet connector 105, and an inlet connector 106.

[0030] The valve body 101 is installed inside the fixed cover 4. The liquid outlet groove 103 is opened in the middle of the bottom of the inner wall of the valve body 101 and extends through to the outer side of the valve body 101. Multiple liquid inlet grooves 102 are provided. The multiple liquid inlet grooves 102 are arranged in a ring around the liquid outlet groove 103 and are opened in the bottom of the inner wall of the valve body 101. The multiple liquid inlet grooves 102 respectively extend through to the bottom and side of the valve body 101. The liquid outlet connector 105 is fixed to the outside of the valve body 101 and is connected and communicates with the liquid outlet groove 103. The liquid inlet connector 106 is fixed to the outside and bottom of the valve body 101 and is connected and communicates with the liquid inlet groove 102.

[0031] Above the fixed cover 4 is a pipeline switching assembly 2 extending into the valve body 101. The pipeline switching assembly 2 is used to switch the conduction state of multiple liquid outlet slots 103 and liquid inlet slots 102.

[0032] A sensing component 5 is also provided between the top of the fixed cover 4 and the pipeline switching component 2. The sensing component 5 is used to realize the sensing and positioning of the operating position of the pipeline switching component 2.

[0033] The pipeline switching assembly 2 includes a stepper motor 201, a convex rotating part 202, a bearing 203, a rotating valve core 206, a straight groove channel 207, a fixed valve core 208, a docking through hole 209, and a center through hole 210;

[0034] The stepper motor 201 is fixed to the top of the fixed cover 4 by the fixed base 3. The bottom of the output end of the stepper motor 201 is limited and sleeved with the convex rotating part 202. The convex rotating part 202 is rotatably connected to the inside of the valve body 101 by the bearing 203.

[0035] The rotary valve core 206 is locked to the bottom of the convex rotating part 202, and the straight groove channel 207 is opened on the lower surface of the rotary valve core 206;

[0036] A central through hole 210 is opened at the top center of the fixed valve core 208. Multiple connecting through holes 209 are provided. The multiple connecting through holes 209 are arranged in a ring around the central through hole 210 at the top of the fixed valve core 208. The connecting through holes 209 and the central through hole 210 completely penetrate the bottom of the fixed valve core 208. The fixed valve core 208 is limited and installed inside the valve body 101 and is respectively attached to the bottom of the inner wall of the valve body 101 and the lower surface of the rotating valve core 206. The connecting through hole 209 is aligned with the position of the liquid inlet groove 102, and the central through hole 210 is aligned with the position of the liquid outlet groove 103. The two ends of the straight groove channel 207 are in contact with the central through hole 210 and one connecting through hole 209 respectively.

[0037] The stepper motor 201 drives the rotating valve core 206 to rotate circumferentially, which is used to switch the conduction state of multiple docking through holes 209 and the central through hole 210, thereby switching the conduction state of multiple liquid inlet slots 102 and liquid outlet slots 103.

[0038] The valve body 101 has an integrally formed positioning protrusion 104 on the top of its inner wall, and a positioning groove 211 is integrally formed on the bottom of the fixed valve core 208. The fixed valve core 208 is sleeved on the outside of the positioning protrusion 104 through the positioning groove 211 to achieve alignment and positioning of the connecting through hole 209 and the liquid inlet groove 102.

[0039] In this embodiment, it should be further noted that: the valve body 101 is provided with 17 inlet slots 102, of which 13 inlet slots 102 penetrate to the bottom of the valve body 101, and the other 4 inlet slots 102 penetrate to the outside of the valve body 101. These inlet slots are arranged in pairs, symmetrically distributed around the outlet slot 103. The 17 inlet slots 102 are located inside the valve body 101 and distributed circumferentially at an angle of 320 degrees to avoid the channel positions of the outlet slot 103 (e.g., Figure 5 , 6 The inlet connector 106 is connected to the reagent tank via a pipe, with each line connecting to one reagent tank.

[0040] The operating principle of this multi-way valve is as follows:

[0041] The stepper motor 201 drives the convex rotating part 202 and the rotating valve core 206 to rotate as a whole. When the rotating valve core 206 rotates, the end of the straight groove channel 207 away from the center is aligned with each of the docking through holes 209 in sequence. The center of the straight groove channel 207 is always connected to the center through hole 210 and the liquid outlet groove 103. The multiple docking through holes 209 are aligned and connected with multiple liquid inlet grooves 102 respectively. In this way, when the end of the straight groove channel 207 away from the center is connected with a certain docking through hole 209, the liquid inlet groove 102 corresponding to this docking through hole 209 can be connected with the liquid outlet groove 103.

[0042] By combining the above components, the pipelines for different reagents can be switched. A single valve assembly 1 can control the delivery of 17 reagents. The overall structure is compact and the operation is simple.

[0043] Please refer to this carefully. Figures 3-4 A first sealing ring 204 is provided between the outer side of the large diameter part of the convex rotating part 202 and the inner wall of the valve body 101. A butterfly spring 205 is provided between the lower surface of the convex rotating part 202 and the upper surface of the rotating valve core 206. A second sealing ring 212 is provided on the lower surface of the fixed valve core 208 at the outer part of the connecting through hole 209 and the liquid inlet groove 102 and the central through hole 210 and the liquid outlet groove 103.

[0044] In this embodiment: the first sealing ring 204 can maintain a good seal between the convex rotating part 202 and the valve body 101, while the second sealing ring 212 can maintain a good seal between the fixed valve core 208 and the valve body 101.

[0045] The butterfly spring 205 presses against the rotating valve core 206, ensuring that the rotating valve core 206 and the fixed valve core 208 are always in close contact, and preventing liquid from flowing out when rotating.

[0046] Please refer to this carefully. Figures 1-4 The sensing component 5 includes an optical disc 501, a first concave photoelectric sensor 502, a Z-shaped sensing sheet 503, and a second concave photoelectric sensor 504.

[0047] The first concave photoelectric sensor 502 and the second concave photoelectric sensor 504 are symmetrically installed on the top of the fixed cover 4 with the convex rotating part 202 as the center. The optical disc 501 is fixedly sleeved and installed on the outside of the convex rotating part 202 and passes through the groove of the first concave photoelectric sensor 502. The edge of the optical disc 501 is provided with a notch corresponding to the position of the multiple docking through holes 209.

[0048] Z-shaped sensor 503 is mounted on the upper surface of optical disc 501, and the running trajectory of the top horizontal part of Z-shaped sensor 503 passes through the groove of the second concave photoelectric sensor 504. Z-shaped sensor 503 and straight groove channel 207 are aligned vertically.

[0049] In this embodiment: the first concave photoelectric sensor 502 is used to sense the conduction position of the liquid inlet groove 102. That is, the notch position on the optical disc 501 represents each docking through hole 209. When the notch on the optical disc 501 rotates to the groove of the first concave photoelectric sensor 502, the first concave photoelectric sensor 502 generates an electrical signal change, indicating that the straight groove channel 207 is aligned with the docking through hole 209 corresponding to this notch, thereby determining the position of the conduction liquid inlet groove 102.

[0050] The second concave photoelectric sensor 504 is used as a reset sensor. During the rotation of the optical disc 501 with the convex rotating part 202, the Z-shaped sensing plate 503 is synchronously driven to rotate. When the Z-shaped sensing plate 503 is driven to rotate into the groove of the second concave photoelectric sensor 504, the second concave photoelectric sensor 504 generates an electrical signal change, which is the initial position.

[0051] It should be noted that the groove of the second concave photoelectric sensor 504 is at a higher horizontal height than that of the first concave photoelectric sensor 502, meaning that the rotation of the Z-shaped sensing sheet 503 will not contact or collide with the first concave photoelectric sensor 502.

[0052] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel multi-way valve for a dewatering machine, comprising a valve body assembly (1) and a fixing cover (4), characterized in that, The valve body assembly (1) includes a valve body (101), an inlet groove (102), an outlet groove (103), a positioning protrusion (104), an outlet connector (105), and an inlet connector (106); The valve body (101) is installed on the inner side of the fixed cover (4). The liquid outlet groove (103) is opened in the middle of the bottom of the inner wall of the valve body (101) and extends through to the outer side of the valve body (101). Multiple liquid inlet grooves (102) are provided. Multiple liquid inlet grooves (102) are arranged in a ring around the liquid outlet groove (103) and are opened in the bottom of the inner wall of the valve body (101). Multiple liquid inlet grooves (102) respectively extend through to the bottom and side of the valve body (101). The liquid outlet connector (105) is fixed on the outside of the valve body (101) and connected to the liquid outlet groove (103). The liquid inlet connector (106) is fixed on the outside and bottom of the valve body (101) and connected to the liquid inlet groove (102). Above the fixed cover (4) is a pipeline switching assembly (2) extending into the valve body (101). The pipeline switching assembly (2) is used to switch the conduction state of multiple liquid outlet slots (103) and liquid inlet slots (102). A sensing component (5) is also provided between the top of the fixed cover (4) and the pipeline switching component (2), and the sensing component (5) is used to realize the sensing and positioning of the operating position of the pipeline switching component (2).

2. The multi-way valve of a novel dehydration machine according to claim 1, characterized in that, The pipeline switching assembly (2) includes a stepper motor (201), a convex rotating part (202), a bearing (203), a rotating valve core (206), a straight groove channel (207), a fixed valve core (208), a connecting through hole (209), and a central through hole (210); The stepper motor (201) is fixed to the top of the fixed cover (4) by the fixed seat (3). The bottom of the output end of the stepper motor (201) is limited and sleeved with the convex rotating part (202). The convex rotating part (202) is rotatably connected to the inside of the valve body (101) by the bearing (203). The rotary valve core (206) is limited and engaged at the bottom of the convex rotating part (202), and the straight groove channel (207) is opened on the lower surface of the rotary valve core (206); The central through hole (210) is opened at the top center of the fixed valve core (208). Multiple docking through holes (209) are provided. The multiple docking through holes (209) are distributed in a ring around the central through hole (210) at the top of the fixed valve core (208). The docking through holes (209) and the central through hole (210) completely penetrate the bottom of the fixed valve core (208). The fixed valve core (208) is limited and installed inside the valve body (101) and is respectively attached to the bottom of the inner wall of the valve body (101) and the lower surface of the rotating valve core (206). The docking through hole (209) is aligned with the liquid inlet groove (102). The central through hole (210) is aligned with the liquid outlet groove (103). The two ends of the straight groove channel (207) are respectively in contact with the central through hole (210) and a docking through hole (209). The stepper motor (201) drives the rotating valve core (206) to rotate in a circular motion, thereby switching the conduction state of multiple docking through holes (209) and the central through hole (210), and then switching the conduction state of multiple liquid inlet slots (102) and liquid outlet slots (103).

3. The multi-way valve of a novel dehydration machine according to claim 2, characterized in that, The valve body (101) has an integrally formed positioning protrusion (104) on the top of its inner wall, and the fixed valve core (208) has an integrally formed positioning groove (211) on its bottom. The fixed valve core (208) is sleeved on the outside of the positioning protrusion (104) through the positioning groove (211) to achieve alignment and positioning of the connecting through hole (209) and the liquid inlet groove (102).

4. The multi-way valve of a novel dewatering machine according to claim 2, characterized in that, A first sealing ring (204) is provided between the outer side of the large diameter portion of the convex rotating part (202) and the inner wall of the valve body (101). A butterfly spring (205) is provided between the lower surface of the convex rotating part (202) and the upper surface of the rotating valve core (206). A second sealing ring (212) is provided on the lower surface of the fixed valve core (208) at the outer part of the connecting through hole (209) and the liquid inlet groove (102) and the central through hole (210) and the liquid outlet groove (103).

5. The multi-way valve of a novel dehydration machine according to claim 2, characterized in that, The sensing component (5) includes an optical disc (501), a first concave photoelectric sensor (502), a Z-shaped sensing sheet (503), and a second concave photoelectric sensor (504); The first concave photoelectric sensor (502) and the second concave photoelectric sensor (504) are symmetrically mounted on the top of the fixed cover (4) with the convex rotating part (202) as the center. The optical disc (501) is fixedly mounted on the outside of the convex rotating part (202) and passes through the groove of the first concave photoelectric sensor (502). The edge of the optical disc (501) is provided with a notch corresponding to the position of multiple docking through holes (209). The Z-shaped sensor (503) is mounted on the upper surface of the optical disc (501), and the running trajectory of the top horizontal part of the Z-shaped sensor (503) passes through the groove of the second concave photoelectric sensor (504). The Z-shaped sensor (503) and the straight groove channel (207) are aligned vertically.

Images