Lifting type flat gate valve

Abstract

The utility model discloses a lifting type flat gate valve, which belongs to the technical field of gate valves and comprises a valve body, a valve cover is detachably mounted at the top of the valve body, a valve rod is rotatably mounted in the valve cover, and a gate plate is fixedly mounted at the bottom end of the valve rod. A vertically-separated separation section is arranged in the valve body, and a valve port is formed in the separation section in a penetrating mode. The gate plate is a flat plate type gate frame, and the side face and the bottom face of the flat plate type gate frame are hollowed out. The outer side of the flat plate type gate frame is detachably sleeved with a sealing sleeve for completely blocking the valve port; each side face of the sealing sleeve is provided with a through opening. According to the lifting type flat gate valve, the flat gate frame is adopted to replace a traditional solid gate plate, the flat gate frame is low in machining precision requirement and low in material consumption, and due to the fact that the sealing sleeve is in direct contact with the valve port, only the sealing sleeve needs to be replaced when the sealing sleeve needs to be replaced due to abrasion, and the later replacement cost of the lifting type flat gate valve is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a lifting flat gate valve. Background Art

[0002] A gate valve is a common valve type. The gate disc, a key component, is flat and shaped. This structure allows the disc to rise and fall vertically within the valve body, fitting tightly against or separating from the valve seat to open and close the valve. The surface of the disc is typically precision-machined to ensure a good seal with the valve seat.

[0003] The gate plates in existing gate valves are mostly solid parts that are precisely machined. Not only do they consume a lot of materials, but they also require high-precision machining. With long-term use, the valve plate will wear out between it and the valve port. Once the valve plate is worn, the seal will not be tight. At this time, the entire valve plate needs to be replaced, and the subsequent replacement cost is high. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a lifting flat plate gate valve, which adopts a flat gate frame instead of a traditional solid gate plate, wherein the flat gate frame has lower requirements on processing precision and consumes less materials. Since the sealing sleeve is in direct contact with the valve port, when it needs to be replaced due to wear, only the sealing sleeve needs to be replaced, and the later replacement cost is lower.

[0005] In order to solve the above technical problems, the technical solution of the utility model is achieved as follows:

[0006] A lifting flat gate valve comprises a valve body, a valve cover is detachably installed on the top of the valve body, a valve stem is rotatably installed in the valve cover, and a gate plate is fixedly installed on the bottom end of the valve stem; a partition section is provided inside the valve body, which divides the interior of the valve body into an upper injection chamber and a lower discharge chamber, and a valve port is penetrated through the partition section; the gate plate is a flat gate frame, and the side and bottom surfaces of the flat gate frame are hollowed out; a sealing sleeve is detachably mounted on the outer side of the flat gate frame to completely block the valve port; a positioning protrusion is fixed on each outer side surface of the flat gate frame, and a positioning groove matching the positioning protrusion is provided on each inner side surface of the sealing sleeve; a through port is provided on each side surface of the sealing sleeve; when the valve stem drives the flat gate frame to rise until the through port is located in the upper injection chamber, the valve body is in an open state; when the valve stem drives the flat gate frame to descend until the through port is completely located in the lower discharge chamber, the valve body is in a closed state.

[0007] By adopting the above scheme, the lifting flat gate valve adopts a flat gate frame instead of the traditional solid gate plate. The flat gate frame has lower requirements on processing accuracy and consumes less materials. Since the sealing sleeve is in direct contact with the valve port, when it needs to be replaced due to wear, only the sealing sleeve needs to be replaced, and the later replacement cost is lower.

[0008] As a preferred embodiment of a lift type flat gate valve, the valve port is a square opening, and each side surface of the sealing sleeve is sealed and assembled with the valve port, wherein the assembly relationship between the sealing sleeve and the valve port is an interference fit.

[0009] With the above solution, in order to ensure the sealing performance of the sealing sleeve and the valve port after assembly, the two are assembled in an interference fit relationship, thereby ensuring good sealing performance of the sealing sleeve and the valve port after assembly.

[0010] As a preferred embodiment of the lift type flat gate valve, the assembly relationship between the positioning protrusion and the positioning groove is an interference fit.

[0011] By adopting the above solution, in order to ensure the reliability of the sealing sleeve after being installed on the flat gate frame, the positioning protrusion and the positioning groove are interference fitted, thereby preventing the sealing sleeve from falling off the flat gate frame.

[0012] As a preferred embodiment of the lift type flat gate valve, the sealing sleeve is an integrated rubber sleeve.

[0013] By adopting the above solution, in order to improve the processing efficiency of the sealing sleeve, the sealing sleeve is processed into an integrated rubber sleeve, which can greatly improve the processing efficiency, but it will be a little laborious during installation.

[0014] As a preferred embodiment of a lifting flat gate valve, the sealing sleeve is a non-integrated rubber sleeve, which is formed by splicing rubber sleeves distributed on four sides of the flat gate frame.

[0015] In order to improve the installation efficiency of the sealing sleeve, the sealing sleeve is processed into a non-integrated rubber sleeve by adopting the above solution, which can greatly improve its installation efficiency, but will reduce the production efficiency of the sealing sleeve.

[0016] As a preferred embodiment of a lifting flat gate valve, a filter plate is installed at the bottom of the flat gate frame, and both sides of the filter plate are snap-connected to the bottom of the flat gate frame through buckles.

[0017] By adopting the above solution, in order to filter the water, a filter plate is clamped at the bottom of the flat gate frame to filter out larger impurities in the water.

[0018] As a preferred embodiment of a lifting flat gate valve, a docking sleeve that cooperates with the bottom end of the valve stem is fixed to the top of the flat gate frame, and the docking sleeve and the valve stem are connected simultaneously by a transverse connecting pin.

[0019] With the above solution, in order to facilitate the installation or removal of the flat-plate gate frame, the two are fixed by using connecting pins, which makes the installation or removal of the flat-plate gate frame more convenient.

[0020] After adopting the above technical solution, the beneficial effects of the utility model are:

[0021] 1. The lift type flat gate valve adopts a flat gate frame instead of the traditional solid gate. The flat gate frame has lower processing precision requirements and less consumables. Since the sealing sleeve is in direct contact with the valve port, when it needs to be replaced due to wear, only the sealing sleeve needs to be replaced, and the later replacement cost is lower.

[0022] 2. In order to ensure the sealing performance of the sealing sleeve and the valve port after assembly, the two are assembled in an interference fit relationship, thereby ensuring good sealing performance after assembly of the sealing sleeve and the valve port;

[0023] 3. In order to improve the processing efficiency of the sealing sleeve, the sealing sleeve is processed into an integrated rubber sleeve, which can greatly improve the processing efficiency, but it will be a little laborious during installation;

[0024] 4. In order to improve the installation efficiency of the sealing sleeve, the sealing sleeve is processed into a non-integrated rubber sleeve, which can greatly improve its installation efficiency, but will reduce the production efficiency of the sealing sleeve;

[0025] 5. In order to filter the water, a filter plate is clamped at the bottom of the flat gate frame to filter out larger impurities in the water;

[0026] 6. In order to facilitate the installation or disassembly of the flat-plate gate frame, connecting pins are used to fix the two, which will make the installation or disassembly of the flat-plate gate frame more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0029] Figure 2 For display Figure 1 Internal three-dimensional structure diagram of the valve body in the open state in embodiments 1 and 2;

[0030] Figure 3 For display Figure 1 Internal three-dimensional structure diagram of the valve body in the closed state in embodiments 1 and 2;

[0031] Figure 4 For display Figure 1 Internal three-dimensional structure diagram of the valve body in the open state in the third and fourth embodiments;

[0032] Figure 5 For display Figure 1 Internal three-dimensional structure diagram of the valve body in the closed state in embodiments three and four;

[0033] Figure 6 for Figure 1 Internal three-dimensional structure diagram of the middle valve head;

[0034] Figure 7 This is an exploded view of the valve stem, flat gate frame, and sealing sleeve in Example 1;

[0035] Figure 8 This is an exploded view of the valve stem, flat gate frame, and sealing sleeve in Example 2;

[0036] Figure 9 This is an exploded view of the valve stem, flat gate frame, sealing sleeve, and filter plate in Example 3;

[0037] Figure 10 This is an exploded view of the valve stem, flat gate frame, sealing sleeve, and filter plate in Example 4;

[0038] Markings in the figure: 1-valve body; 2-valve cover; 3-valve stem; 4-gate; 5-partitioning section; 6-upper injection chamber; 7-lower discharge chamber; 8-valve port; 9-sealing sleeve; 10-positioning protrusion; 11-positioning groove; 12-through port; 13-filter plate; 14-clip; 15-docking sleeve; 16-connecting pin. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] Example 1, as Figure 1 、 Figures 2 to 3 、 Figures 6 and 7As shown, a lifting flat gate valve comprises a valve body 1, a valve cover 2 is detachably mounted on the top of the valve body 1, a valve stem 3 is rotatably mounted in the valve cover 2, and a gate plate 4 is fixedly mounted on the bottom end of the valve stem 3; a partition section 5 is provided inside the valve body 1, which divides the interior of the valve body 1 into an upper injection chamber 6 and a lower discharge chamber 7, and a valve port 8 is formed through the partition section 5; the gate plate 4 is a flat gate frame, and the side and bottom surfaces of the flat gate frame are hollowed out; the outer side of the flat gate frame is detachably sleeved with a valve port 8 Completely blocked sealing sleeve 9; a positioning protrusion 10 is fixed on each outer side of the flat gate frame, and a positioning groove 11 that matches the positioning protrusion 10 is opened on each inner side of the sealing sleeve 9; a through hole 12 is opened on each side of the sealing sleeve 9; when the valve stem 3 drives the flat gate frame to rise until the through hole 12 is located in the upper injection chamber 6, the valve body 1 is in the open state; when the valve stem 3 drives the flat gate frame to descend until the through hole 12 is completely located in the lower discharge chamber 7, the valve body 1 is in the closed state. This lifting flat gate valve uses a flat gate frame instead of the traditional solid gate plate 4, in which the flat gate frame has lower processing accuracy requirements and less consumables. Since the sealing sleeve 9 is in direct contact with the valve port 8, when it needs to be replaced due to wear, only the sealing sleeve 9 needs to be replaced, and its later replacement cost is lower.

[0041] like Figure 6 As shown, the valve port 8 is a square opening, and each side of the sealing sleeve 9 is sealed against the valve port 8. The sealing sleeve 9 and the valve port 8 are assembled in an interference fit. To ensure good sealing after the sealing sleeve 9 and the valve port 8 are assembled, the two are assembled in an interference fit, thereby ensuring good sealing after the sealing sleeve 9 and the valve port 8 are assembled.

[0042] The assembly relationship between the positioning protrusion 10 and the positioning groove 11 is an interference fit. In order to ensure the reliability of the sealing sleeve 9 after the flat gate frame is installed, the positioning protrusion 10 and the positioning groove 11 are interference fitted to prevent the sealing sleeve 9 from falling off from the flat gate frame.

[0043] like Figure 7 As shown, the sealing sleeve 9 is an integrated rubber sleeve. In order to improve the processing efficiency of the sealing sleeve 9, the sealing sleeve 9 is processed into an integrated rubber sleeve, which can greatly improve the processing efficiency, but it will take a little effort when installing.

[0044] like Figure 7 As shown, a docking sleeve 15 is fixed to the top of the flat gate frame, which cooperates with the bottom end of the valve stem 3. The docking sleeve 15 and the valve stem 3 are connected by a transverse connecting pin 16. To facilitate the installation or removal of the flat gate frame, the connecting pin 16 is used to fix the two together, making the installation or removal of the flat gate frame more convenient.

[0045] Example 2, as Figure 1 、 Figures 2 to 3、 Figure 6 、 Figure 8 As shown, the only difference between this embodiment and the first embodiment is that the sealing sleeve 9 is a non-integrated rubber sleeve. The rubber sleeve is composed of rubber sleeves distributed on the four sides of the flat gate frame. In order to improve the installation efficiency of the sealing sleeve 9, the sealing sleeve 9 is processed into a non-integrated rubber sleeve, which can greatly improve its installation efficiency, but it will reduce the production efficiency of the sealing sleeve 9.

[0046] Example 3, as Figure 1 、 Figures 4 and 5 、 Figure 6 、 Figure 9 As shown, the only difference between this embodiment and the first embodiment is that, based on the first embodiment, a filter plate 13 is installed at the bottom of the flat gate frame, and both sides of the filter plate 13 are clamped to the bottom of the flat gate frame by buckles 14. In order to filter the water quality, the filter plate 13 is clamped at the bottom of the flat gate frame to filter out larger impurities in the water.

[0047] Example 4, as Figure 1 、 Figures 4 and 5 、 Figure 6 、 Figure 10 As shown, the only difference between this embodiment and the second embodiment is that, based on the second embodiment, a filter plate 13 is installed at the bottom of the flat gate frame, and both sides of the filter plate 13 are clamped to the bottom of the flat gate frame by buckles 14. In order to filter the water quality, the filter plate 13 is clamped at the bottom of the flat gate frame to filter out larger impurities in the water.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lifting flat gate valve, comprising a valve body (1), a valve cover (2) being detachably mounted on the top of the valve body (1), a valve stem (3) being rotatably mounted in the valve cover (2), and a gate plate (4) being fixedly mounted on the bottom end of the valve stem (3); a partition section (5) is provided inside the valve body (1), the partition section dividing the interior of the valve body (1) into an upper injection chamber (6) and a lower discharge chamber (7); a valve port (8) is formed through the partition section (5); Its characteristics are: The gate plate (4) is a flat gate frame, the side and bottom of which are hollowed out; the outer side of the flat gate frame is detachably covered with a sealing sleeve (9) that completely blocks the valve port (8); A positioning convex head (10) is fixed on each outer side of the flat gate frame, and a positioning groove (11) is provided on each inner side of the sealing sleeve (9) to match the positioning convex head (10); Each side of the sealing sleeve (9) is provided with a through opening (12); when the valve stem (3) drives the flat gate frame to rise until the through opening (12) is located in the upper injection chamber (6), the valve body (1) is in an open state; when the valve stem (3) drives the flat gate frame to descend until the through opening (12) is completely located in the lower discharge chamber (7), the valve body (1) is in a closed state.

2. The lift type flat gate valve according to claim 1, characterized in that: The valve port (8) is a square opening, and each side surface of the sealing sleeve (9) is sealed and assembled with the valve port (8).

3. The lift type flat gate valve according to claim 2, characterized in that: The assembly relationship between the sealing sleeve (9) and the valve port (8) is an interference fit.

4. The lift type flat gate valve according to claim 3, characterized in that: The assembly relationship between the positioning protrusion (10) and the positioning groove (11) is interference fit.

5. The lift type flat gate valve according to claim 4, characterized in that: The sealing sleeve (9) is an integrated rubber sleeve.

6. The lift type flat gate valve according to claim 4, characterized in that: The sealing sleeve (9) is a non-integrated rubber sleeve, which is formed by splicing rubber sleeves distributed on four sides of the flat gate frame.

7. The lift type flat gate valve according to claim 5 or 6, characterized in that: A filter plate (13) is installed at the bottom of the flat-plate gate frame, and both sides of the filter plate (13) are clamped to the bottom of the flat-plate gate frame through buckles (14).

8. The lift type flat gate valve according to claim 7, characterized in that: A docking sleeve (15) for use with the bottom end of the valve stem (3) is fixed to the top of the flat gate frame, and the docking sleeve (15) and the valve stem (3) are simultaneously connected via a transverse connecting pin (16).

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