Material valve of filtering, washing and drying machine

Abstract

The utility model belongs to the field of pharmaceutical machinery, and particularly relates to a material valve of a filtering, washing and drying machine, which comprises a valve body, a valve core and a driving device, the extension pipe is connected to the inner circumference of the first connecting flange and protrudes outwards relative to the first connecting flange, and the thickness of the part, protruding relative to the first connecting flange, of the extension pipe is matched with the thickness of a tank body of the filtering, washing and drying machine; the valve element is provided with a sealing plate in sealing fit with the inner end of the extension pipe and an extension column extending into the extension pipe, and the extension column is matched with the extension pipe in shape. The material valve can be used as a feeding valve or a discharging valve, when the material valve is installed on a tank body of a filtering, washing and drying machine, the first connecting flange is connected with the outer wall of the tank body, the extending pipe of the valve body extends into the tank body, the inner end of the extending pipe is flush with the inner wall of the tank body, after the material valve is closed, the inner end of the extending column of the valve element is flush with the inner wall of the tank body, and the effect of no dead zone is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of pharmaceutical machinery, concretely relates to a material valve of filter washing and drying machine. BACKGROUND

[0002] As the key equipment for material solid-liquid separation, washing and drying in chemical industry, pharmaceutical industry and other industries, the performance of filter washing and drying machine directly affects production efficiency and product quality. In current industrial production, many traditional material valves of filter washing and drying machine expose many problems in actual application process. Among them, the dead zone after dissolving discharge or feeding closing is a more prominent and urgent problem to be solved. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at overcoming the shortcomings and deficiencies in the prior art and provides a material valve of filter washing and drying machine.

[0004] The technical scheme adopted by the utility model is as follows: a material valve of filter washing and drying machine, including valve body, valve core and driving device for driving the valve core to linearly slide along the central axis, the valve body has valve cavity main body, first connecting flange and extension pipe, the first connecting flange is connected to one end of the valve cavity main body, the extension pipe is connected to the inner periphery of the first connecting flange and protrudes outward relative to the first connecting flange, the thickness of the protruding part of the extension pipe relative to the first connecting flange along the central axis direction is adapted to the thickness of the tank body of the filter washing and drying machine, the valve core has sealing plate in sealing cooperation with the inner end of the extension pipe and extension column extending into the extension pipe, and the extension column is adapted to the shape of the extension pipe.

[0005] Preferably, the outer wall of the extension pipe is embedded with a first sealing ring, and the end face of the first connecting flange for being attached to the tank body is embedded with a second sealing ring.

[0006] Preferably, the sealing surface of the sealing plate in sealing cooperation with the inner end of the extension pipe is embedded with a third sealing ring.

[0007] Preferably, the groove section for embedding the third sealing ring on the sealing surface of the sealing plate in sealing cooperation with the inner end of the extension pipe is dovetail type.

[0008] Preferably, the lower end of the outer wall of the valve cavity main body is connected with a discharge pipe.

[0009] Preferably, the upper end of the outer wall of the valve cavity main body is connected with a feeding pipe.

[0010] Preferably, the valve core is connected with a valve rod, the other end of the valve body relative to the first connecting flange is connected with an end cover, and the valve rod passes through the end cover and is connected with the driving device.

[0011] Preferably, the valve stem is provided with a packing sleeve and a packing gland outside the valve cavity body. The packing gland, packing sleeve, and end cap are connected and fixed in sequence by bolts. A packing sealing assembly is provided between the packing sleeve and the valve stem.

[0012] Preferably, the inner circumference of the packing sleeve is provided with at least two spaced-apart packing grooves and sealing grooves; the packing sealing assembly includes at least two packing rings disposed in the packing grooves, the packing rings being composed of nested inner and outer rings, the outer circumference of the inner ring forming a groove, the outer ring being embedded in the groove outside the inner ring and being deformed by the inner ring and the packing sleeve; the sealing groove is provided with a sixth sealing ring and a first gasket.

[0013] Preferably, the inner circumference of the packing sleeve is provided with a scraper groove near the packing gland. The scraper groove is provided with a scraper ring, a second washer, and an axial elastic pressure element. The packing gland, scraper ring, second washer, and axial elastic pressure element are arranged in sequence. The inner circumference of the scraper ring forms a scraper tip that fits against the outer circumference of the valve stem.

[0014] The beneficial effects of this utility model are as follows: The material valve provided by this utility model can be used as a feed valve or a discharge valve. When installed on the tank of the filter washing and drying machine, the first connecting flange is connected to the outer wall of the tank. The extension tube of the valve body extends into the tank and its inner end is flush with the inner wall of the tank. After closing, the inner end of the extension column of the valve core is flush with the inner wall of the tank, forming an effect without dead zones. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention in the closed state according to an embodiment;

[0017] Figure 2 This is a schematic diagram of the valve body according to one embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the valve core structure according to one embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of one embodiment of the present invention in conjunction with the tank of a filter washing and drying machine;

[0020] Figure 5 for Figure 1A schematic diagram of the structure of part A;

[0021] In the diagram, valve body-1, valve cavity body-101, first connecting flange-102, extension pipe-103, second connecting flange-104, valve core-2, sealing plate-201, extension column-202, tank body-3, first sealing ring-401, second sealing ring-402, third sealing ring-403, discharge pipe-501, inlet pipe-502, valve stem-6, end cap-7, packing sleeve-8, packing groove-801, sealing element groove-802, packing gland-9, packing ring-10, inner ring-1001, outer ring-1002, scraper groove-1003, sixth sealing ring-11, first gasket-12, scraper ring-13, scraper tip-1301, second gasket-14, axial elastic pressure element-15. Detailed Implementation

[0022] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0023] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0024] The directional and positional terms used in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0025] A material valve for a filter washing and drying machine, such as Figure 1 As shown, the valve includes a valve body 1, a valve core 2, a valve stem 6, an end cap 7, and a drive device. The valve body 1 and the end cap 7 are connected to form a valve cavity. The valve core 2 is disposed in the valve cavity. One end of the valve stem 6 is connected to the valve core 2, and the other end passes through the end cap 7 and is connected to the drive device. The drive device is used to drive the valve core 2 to slide linearly along the central axis of the valve stem 6. In the figure, the drive device is a handwheel, which is engaged with the valve stem 6 through a nut for manual drive. It can also be used with common valve actuators such as electric and hydraulic ones.

[0026] like Figure 2As shown, the valve body 1 has a valve cavity body 101, a first connecting flange 102, a second connecting flange 104, and an extension tube 103. The first connecting flange 102 and the second connecting flange 104 are respectively connected to both ends of the valve cavity body 101, and are used to connect to the tank body 3 and end cap 7 of the filter washing and drying machine, respectively. The first connecting flange 102 and the second connecting flange 104 can be integrally formed with the valve cavity body 101 or separately welded. In the figure, the first connecting flange 102 and the valve cavity body 101 are integrally formed, while the second connecting flange 104 is separately welded to the valve cavity body 101. The extension tube 103 is connected to the inner circumference of the first connecting flange 102 and protrudes outward relative to the first connecting flange 102. The thickness of the protruding portion of the extension tube 103 relative to the first connecting flange 102 along the central axis of the valve stem 6 is adapted to the thickness of the tank body 3 of the filter washing and drying machine; as shown... Figure 3 As shown, the valve core 2 has a sealing plate 201 that seals with the inner end of the extension tube 103 and an extension post 202 that extends into the extension tube 103. The extension post 202 is adapted to the shape of the extension tube 103. In this embodiment, after the material valve is installed on the side wall of the tank of the filter washing and drying machine, as shown... Figure 4 As shown, the end of the extension tube 103 is flush with the inner wall of the tank, and after the material valve is closed, the end of the extension column 202 is flush with the inner wall of the tank, forming a dead zone-free effect.

[0027] Furthermore, a first sealing ring 401 is embedded in the outer wall of the extension tube 103, and a second sealing ring 402 is embedded in the end face of the first connecting flange 102 that is used to fit with the tank body 3, so that the valve body 1 and the tank body 3 after installation form a double sealing effect of circumferential surface sealing plus end face sealing. A fourth sealing ring is provided between the end cover 7 and the second connecting flange 104.

[0028] Furthermore, a third sealing ring 403 is embedded on the sealing surface where the sealing plate 201 and the inner end of the extension tube 103 are sealed together. Specifically, the groove cross-section for embedding the third sealing ring 403 on the sealing surface where the sealing plate 201 and the inner end of the extension tube 103 are sealed together is dovetail-shaped. This ensures a reliable seal between the valve core 2 and the valve body 1 after closure.

[0029] Furthermore, a discharge pipe 501 is connected to the lower end of the outer wall of the valve cavity body 101, and a feed pipe 502 is connected to the upper end of the outer wall of the valve cavity body 101. With the above configuration, the material valve of this embodiment can simultaneously function as a feed valve and a discharge valve. Specifically, liquid materials can be discharged into the tank 3 through the feed pipe 502, and liquid materials in the tank 3 can be discharged through the discharge pipe 501. When used as a feed valve, after closing the valve core to stop feeding, residual materials in the valve cavity can be discharged through the discharge pipe 501. At the same time, cleaning fluid can also be discharged through the feed pipe 502 to clean the inner cavity of the tank 3 and the valve body 1, and then waste liquid can be discharged through the discharge pipe 501.

[0030] Furthermore, such as Figure 1 As shown, the valve stem 6 is provided with a packing sleeve 8 and a packing gland 9 outside the valve cavity body 101. The packing gland 9, packing sleeve 8, and end cap 7 are connected and fixed in sequence by bolts. A packing sealing assembly is provided between the packing sleeve 8 and the valve stem 6. A fifth sealing ring is provided between the end cap 7 and the packing sleeve 8.

[0031] like Figure 5 As shown, the inner circumference of the packing sleeve 8 is provided with at least two spaced-apart packing grooves 801 and sealing grooves 802; the packing sealing assembly includes at least two packing rings 10 disposed in the packing grooves, the packing rings 10 being composed of an inner ring 1001 and an outer ring 1002 nested together, the outer circumference of the inner ring 1001 forming a groove, the outer ring 1002 being embedded in the groove outside the inner ring 1001 and being squeezed and deformed by the inner ring 1001 and the packing sleeve 8, the inner ring 1001 being tightly pressed against the outer wall of the valve stem 6 under the pressure of the outer ring 1002; the sealing groove 802 is provided with a sixth sealing ring 11 and a first gasket 12, the combined sealing structure forming a reliable sealing effect.

[0032] Furthermore, the inner circumference of the packing sleeve 8 near the packing gland 9 is provided with a scraper groove 1003. The scraper groove 1003 contains a scraper ring 13, a second washer 14, and an axial elastic pressure element 15. The packing gland 9, scraper ring 13, second washer 14, and axial elastic pressure element 15 are arranged sequentially. The inner circumference of the scraper ring 13 forms a scraper tip 1301 that fits against the outer circumference of the valve stem 6. When the material valve is opened, the scraper tip 1301 of the scraper ring 13 fits against the valve stem 6 and moves relative to the valve stem 6, preventing material adhering to the valve stem 6 from entering the packing seal assembly and affecting its sealing effect. The axial elastic pressure element 15 can be a combined disc spring.

[0033] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A material valve for a filter washing and drying machine, comprising a valve body (1), a valve core (2), and a driving device for driving the valve core (2) to slide linearly, characterized in that: The valve body (1) has a valve cavity body (101), a first connecting flange (102) and an extension pipe (103). The first connecting flange (102) is connected to one end of the valve cavity body (101). The extension pipe (103) is connected to the inner circumference of the first connecting flange (102) and protrudes outward relative to the first connecting flange (102). The thickness of the part of the extension pipe (103) that protrudes relative to the first connecting flange (102) is adapted to the thickness of the tank body (3) of the filter washing dryer. The valve core (2) has a sealing plate (201) that seals with the inner end of the extension tube (103) and an extension post (202) that extends into the extension tube (103), the extension post (202) being adapted to the shape of the extension tube (103).

2. The material valve of the filter washing and drying machine according to claim 1, characterized in that: The valve core (2) is connected to the valve stem (6), and the valve body (1) is connected to the end cap (7) at the other end relative to the first connecting flange (102). The valve stem (6) passes through the end cap (7) and is connected to the drive device.

3. The material valve of the filter washing and drying machine according to claim 2, characterized in that: The valve stem (6) is provided with a packing sleeve (8) and a packing gland (9) outside the valve cavity body (101). The packing gland (9), packing sleeve (8), and end cap (7) are connected and fixed in sequence by bolts. A packing sealing assembly is provided between the packing sleeve (8) and the valve stem (6).

4. The material valve of the filter washing and drying machine according to claim 3, characterized in that: The inner circumference of the packing sleeve (8) is provided with at least two spaced-apart packing grooves (801) and sealing grooves (802); the packing sealing assembly includes at least two packing rings (10) disposed in the packing grooves, the packing rings (10) are composed of an inner ring (1001) and an outer ring (1002) nested together, the outer circumference of the inner ring (1001) forms a groove, the outer ring (1002) is embedded in the groove outside the inner ring (1001) and is squeezed and deformed by the inner ring (1001) and the packing sleeve (8); the sealing groove (802) is provided with a sixth sealing ring (11) and a first gasket (12).

5. The material valve of the filter washing and drying machine according to claim 3, characterized in that: The inner circumference of the packing sleeve (8) near the packing gland (9) is provided with a scraper groove (1003). The scraper groove (1003) is provided with a scraper ring (13), a second washer (14), and an axial elastic pressure member (15). The packing gland (9), scraper ring (13), second washer (14), and axial elastic pressure member (15) are arranged in sequence. The inner circumference of the scraper ring (13) forms a scraper tip (1301) that fits against the outer circumference of the valve stem (6).

6. The material valve of the filter washing and drying machine according to claim 1, characterized in that: The outer wall of the extension tube (103) is fitted with a first sealing ring (401), and the end face of the first connecting flange (102) used to fit with the tank body (3) is fitted with a second sealing ring (402).

7. The material valve of the filter washing and drying machine according to claim 1, characterized in that: A third sealing ring (403) is embedded on the sealing surface where the sealing plate (201) and the inner end of the extension tube (103) are sealed together.

8. The material valve of the filter washing and drying machine according to claim 7, characterized in that: The sealing surface of the sealing plate (201) and the inner end of the extension tube (103) is used to embed the third sealing ring (403) in a dovetail-shaped groove.

9. The material valve of the filter washing and drying machine according to claim 1, characterized in that: The lower end of the outer wall of the valve chamber body (101) is connected to the discharge pipe (501).

10. The material valve of the filter washing and drying machine according to claim 1 or 9, characterized in that: The upper end of the outer wall of the valve chamber body (101) is connected to the feed pipe (502).

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