Flat gate valve with balance rod

Abstract

The utility model discloses a flat gate valve with a balance rod, which comprises a valve body, an upper valve cover connected with the upper end of the valve body through a bolt, and a lower valve cover connected with the lower end of the valve body through a bolt, a first cavity and a second cavity are arranged between the upper valve cover and the valve body and between the lower valve cover and the valve body respectively, a top cover is fixedly arranged at the upper end of the upper valve cover through a bolt, a gate plate is arranged in the valve body, a circulation opening matched with the circulation channel is formed in the lower end of the gate plate, and a valve rod is fixedly arranged at the upper end of the gate plate. The valve rod sequentially penetrates through the first cavity, the upper valve cover and the top cover to be fixedly connected with a fixing part, an adjusting structure is arranged in the top cover, and the adjusting structure controls the valve rod to move up and down; the circulation channel and the circulation hole can be concentric, and the gate valve is easy to open and close.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and more specifically to a flat gate valve with a balance rod. Background Art

[0002] The flat gate valve is a sliding valve whose closing part is a parallel gate. Its closing part can be a single gate or a double gate with a propping mechanism in between. During the opening of the gate, the flow channel of the valve body and the flow hole of the gate are prone to be out of center. The Chinese utility model single gate with guide hole flat gate valve with publication number CN206669002U in the prior art has the above problem. In addition, it is time-consuming and laborious to open and close the gate valve manually. Therefore, this application proposes a flat gate valve with a balance rod. Utility Model Content

[0003] The utility model aims to provide a flat gate valve with a balance rod, wherein the flow channel and the flow hole can be concentric, and the gate valve is easy to open and close.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A flat gate valve with a balance rod, comprising a valve body and an upper valve cover connected to the upper end of the valve body by bolts, and a lower valve cover connected to the lower end of the valve body by bolts, a flow channel is provided in the center of the valve body, a cavity one and a cavity two are provided between the upper valve cover and the valve body, and between the lower valve cover and the valve body, respectively, a top cover is fixedly provided at the upper end of the upper valve cover by bolts, a gate is provided in the valve body, a flow port matching the flow channel is opened at the lower end of the gate, a valve seat is embedded in the inner wall of the valve body and abuts against both sides of the gate, a valve stem is fixedly provided at the upper end of the gate, the valve stem passes through the cavity one, the upper valve cover and the top cover in sequence and is fixedly connected to a fixing part, an adjusting structure is provided in the top cover, the adjusting structure controls the valve stem to move up and down, a balance rod is fixedly provided at the lower end of the gate, the balance rod comprises a lower valve stem and a limiting part fixed to the upper end of the lower valve stem, the limiting part is located in the cavity two, the lower valve cover is located at the lower end of the cavity two and is provided with a bottom cavity, and the lower valve stem is located in the bottom cavity.

[0006] By adopting the above technical solution, the utility model has the following advantages:

[0007] The setting of the limit part and the lower valve stem of the utility model enables the limit part to limit the movement range of the gate plate when the gate plate is opened. When the upper end of the limit part abuts against the two upper ends of the cavity, the flow channel and the flow hole can be concentric, effectively solving the problem of the flow channel and the flow hole being not concentric when the gate plate is opened. The setting of the adjustment structure of the utility model eliminates the need for manual control of the up and down movement of the valve stem, which saves time and effort and makes the gate valve easy to open and close.

[0008] Furthermore, a stuffing groove is provided at the position where the upper valve cover contacts the valve stem, a sealing stuffing is provided in the stuffing groove, a sealing cover plate is provided at the upper end of the sealing stuffing, and the sealing cover plate is fixedly connected to the upper end of the upper valve cover by bolts.

[0009] By adopting the above technical solution, the utility model has the following advantages:

[0010] The arrangement of the sealing packing of the utility model strengthens the sealing performance between the valve stem and the upper valve cover, and can effectively prevent the leakage of the medium.

[0011] Furthermore, the adjusting structure includes a motor, a large gear, a small gear, a bottom column and a connecting ring, the connecting ring is sleeved on the lower end of the outer side of the valve stem and fixedly connected to the sealing cover plate, the center of the small gear is threadedly connected to the valve stem, the lower end of the small gear is provided with an annular groove, the upper end of the connecting ring is clamped in the annular groove, one side of the annular groove is connected to a annular rolling groove, a ring is fixedly provided on the upper end of the connecting ring corresponding to the one side of the annular rolling groove, a plurality of wheel grooves are provided at the end of the ring away from the connecting ring, a roller is provided in the wheel groove, and rotating columns are fixedly provided at the upper and lower ends of the roller, and the rotating columns are rotatably connected to the upper and lower ends of the corresponding wheel grooves respectively.

[0012] By adopting the above technical solution, the utility model has the following advantages:

[0013] The arrangement of the connecting ring, the ring ring and the roller of the utility model enables the small gear to rotate on the connecting ring, and the rotation of the large gear can drive the small gear to rotate.

[0014] Furthermore, a horizontal plate is fixedly provided on one side of the top cover, the motor is fixedly provided on the upper end of the horizontal plate, the output end of the motor passes through the horizontal plate and is fixedly connected to one side of the large gear, one side of the large gear is meshed with one side of the small gear, the lower end of the bottom column is rotatably connected to the upper end of the upper valve cover, a main column is fixedly provided on the upper end of the bottom column, clamping strips are fixedly provided at both ends of the main column, an embedded groove is provided at the lower end of the large gear corresponding to the position of the main column and the clamping strip, and the embedded groove matches the main column and the clamping strip.

[0015] By adopting the above technical solution, the utility model has the following advantages:

[0016] The arrangement of the motor, the large gear and the small gear of the utility model enables the starting of the motor to drive the large gear to rotate, thereby driving the small gear to rotate, and the inner side of the small gear is threadedly connected with the valve stem, thereby driving the valve stem to move up and down.

[0017] Furthermore, a scale line is provided on one side of the upper end of the valve stem.

[0018] By adopting the above technical solution, the utility model has the following advantages:

[0019] The setting of the scale line of the utility model enables the staff to observe whether the gate is fully opened through the scale line during the gate opening process. When it is observed that the gate is not fully opened, it can be known that there is a problem with the internal balance bar, which can be repaired and replaced in time.

[0020] Furthermore, an annular spring groove 1 is provided at one end of the valve seat away from the gate plate, and a plurality of springs 1 are fixedly arranged in the annular spring groove 1; an annular spring groove 2 is provided at one end of the valve seat close to the gate plate, and a plurality of springs 2 are fixedly arranged in the annular spring groove 2; a sealing ring is fixedly provided at one end of the spring 2 close to the gate plate, and an annular clamping portion is fixedly provided at both upper and lower ends of the sealing ring; annular clamping grooves are provided at positions of the annular spring groove 2 corresponding to the annular clamping portion, and the annular clamping portion is clamped in the corresponding annular clamping groove.

[0021] By adopting the above technical solution, the utility model has the following advantages:

[0022] The setting of spring one of the utility model can push the valve seat and the gate plate to fit closely, realize effective sealing, and effectively prevent medium leakage. The setting of spring two and the sealing ring can push the sealing ring to fit the gate plate, further strengthen the sealing of the valve seat and the gate plate, and effectively prevent medium leakage.

[0023] Furthermore, a sealing ring groove is provided on the outer side of the valve seat and on the end away from the gate plate, and a sealing ring is clamped in the sealing ring groove.

[0024] By adopting the above technical solution, the utility model has the following advantages:

[0025] The arrangement of the sealing ring of the utility model effectively strengthens the sealing performance between the valve seat and the valve body, and can effectively prevent the leakage of the medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0028] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0029] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0030] Figure 4 For this utility model Figure 4 The enlarged structural diagram at B in the middle;

[0031] Figure 5 This is a schematic diagram of the bottom column structure of the utility model;

[0032] Figure 6 For this utility model Figure 2 Enlarged structural diagram at point C in the middle.

[0033] Figure numerals: 1, valve body; 101, flow channel; 2, bottom column; 201, main column; 202, clamping strip; 3, large gear; 301, embedded groove; 4, connecting ring; 401, ring; 402, wheel groove; 5, valve stem; 501, scale line; 6, small gear; 601, annular groove; 602, annular rolling groove; 7, roller; 701, rotating column; 8, valve seat; 801, annular spring groove II; 802, annular clamping groove; 803, annular spring Spring groove one; 804, sealing ring groove; 9, sealing ring; 901, annular clamping part; 10, fixing part; 11, top cover; 12, upper valve cover; 13, cavity one; 14, lower valve cover; 15, cavity two; 16, flow port; 17, limit part; 18, lower valve stem; 19, gate; 20, spring one; 21, motor; 22, cross plate; 23, sealing packing; 24, packing groove; 25, sealing cover plate; 26, sealing ring; 27, spring two. DETAILED DESCRIPTION

[0034] like Figure 1 to Figure 2 As shown, in the specific embodiment, a flat gate valve with a balance rod includes a valve body 1 and an upper valve cover 12 connected to the upper end of the valve body 1 by bolts and a lower valve cover 14 connected to the lower end of the valve body 1 by bolts. A flow channel 101 is provided in the center of the valve body 1, and a cavity 13 and a cavity 2 15 are provided between the upper valve cover 12 and the valve body 1 and between the lower valve cover 14 and the valve body 1, respectively. A top cover 11 is fixed to the upper end of the upper valve cover 12 by bolts, a gate plate 19 is provided in the valve body 1, and a flow port 16 matching the flow channel 101 is opened at the lower end of the gate plate 19, and a valve seat 8 is embedded in the inner wall of the valve body 1 and abuts against both sides of the gate plate 19. A valve stem 5 is fixedly arranged on the upper end of the gate plate 19. The valve stem 5 passes through the cavity 13, the upper valve cover 12 and the top cover 11 in sequence and is fixedly connected to the fixing part 10. An adjusting structure is arranged in the top cover 11. The adjusting structure controls the up and down movement of the valve stem 5. A balance bar is fixedly arranged at the lower end of the gate plate 19. The balance bar includes a lower valve stem 18 and a limiting part 17 fixed at the upper end of the lower valve stem 18. The limiting part 17 is located in the cavity 2 15. The lower valve cover 14 is located at the lower end of the cavity 2 15 and is communicated with a bottom cavity. The lower valve stem 18 is located in the bottom cavity.

[0035] Through the above settings, the setting of the limit part 17 and the lower valve stem 18 of the utility model enables the limit part 17 to limit the movement range of the gate plate 19 when the gate plate 19 is opened. When the upper end of the limit part 17 abuts against the two upper ends of the cavity, the flow channel 101 and the flow hole can be concentric, which effectively solves the problem of the flow channel 101 and the flow hole being not concentric when the gate plate 19 is opened; the setting of the adjustment structure of the utility model enables the control of the up and down movement of the valve stem 5 to be done without manual control, which saves time and effort and makes it easy to open and close the gate valve.

[0036] like Figures 2 to 5 As shown, a packing groove 24 is provided at the position where the upper valve cover 12 contacts the valve stem 5, a sealing packing 23 is provided in the packing groove 24, a sealing cover plate 25 is provided at the upper end of the sealing packing 23, and the sealing cover plate 25 is fixedly connected to the upper end of the upper valve cover 12 by bolts; the adjusting structure includes a motor 21, a large gear 3, a small gear 6, a bottom column 2 and a connecting ring 4, the connecting ring 4 is sleeved on the lower end of the outer side of the valve stem 5 and is fixedly connected to the sealing cover plate 25, the center of the small gear 6 is threadedly connected to the valve stem 5, an annular groove 601 is provided at the lower end of the small gear 6, the upper end of the connecting ring 4 is clamped in the annular groove 601, an annular rolling groove 602 is provided on one side of the annular groove 601, a ring 401 is fixedly provided on the side of the upper end of the connecting ring 4 corresponding to the annular rolling groove 602, and a plurality of wheel grooves are provided on the end of the ring 401 away from the connecting ring 4 402, a roller 7 is provided in the wheel groove 402, and rotating columns 701 are fixedly provided at the upper and lower ends of the roller 7, and the rotating columns 701 are rotatably connected with the upper and lower ends of the corresponding wheel groove 402 respectively; a horizontal plate 22 is fixedly provided on one side of the top cover 11, and a motor 21 is fixedly provided on the upper end of the horizontal plate 22, and the output end of the motor 21 passes through the horizontal plate 22 and is fixedly connected with one side of the large gear 3, and one side of the large gear 3 is meshed with one side of the small gear 6, and the lower end of the bottom column 2 is rotatably connected with the upper end of the upper valve cover 12, and a main column 201 is fixedly provided on the upper end of the bottom column 2, and clamping strips 202 are fixedly provided at both ends of the main column 201, and an embedded groove 301 is provided at the lower end of the large gear 3 corresponding to the position of the main column 201 and the clamping strip 202, and the embedded groove 301 matches the main column 201 and the clamping strip 202; a scale line 501 is provided on one side of the upper end of the valve stem 5.

[0037] Through the above settings, the setting of the sealing packing 23 of the utility model strengthens the sealing between the valve stem 5 and the upper valve cover 12, which can effectively prevent medium leakage; the setting of the connecting ring 4, the ring 401 and the roller 7 of the utility model allows the small gear 6 to rotate on the connecting ring 4, so that the rotation of the large gear 3 can drive the small gear 6 to rotate; the setting of the motor 21, the large gear 3 and the small gear 6 of the utility model allows the start of the motor 21 to drive the large gear 3 to rotate, thereby driving the small gear 6 to rotate, and the inner side of the small gear 6 is threadedly connected to the valve stem 5, thereby driving the valve stem 5 to move up and down; the setting of the scale line 501 of the utility model allows the staff to observe whether the gate plate 19 is fully opened through the scale line 501 during the opening process of the gate plate 19. When it is observed that the gate plate 19 is not fully opened, it can be known that there is a problem with the internal balance bar, and it can be repaired and replaced in time.

[0038] like Figure 2 and Figure 6 As shown, an annular spring groove 803 is provided at one end of the valve seat 8 away from the gate plate 19, and a plurality of springs 20 are fixedly arranged in the annular spring groove 803; an annular spring groove 801 is provided at one end of the valve seat 8 close to the gate plate 19, and a plurality of springs 27 are fixedly arranged in the annular spring groove 801; a sealing ring 9 is fixedly provided at one end of the spring 27 close to the gate plate 19; annular clamping parts 901 are fixedly provided at both the upper and lower ends of the sealing ring 9; annular clamping grooves 802 are provided at positions of the annular spring groove 801 corresponding to the annular clamping parts 901, and the annular clamping parts 901 are clamped in the corresponding annular clamping grooves 802; sealing ring grooves 804 are provided on the outer side of the valve seat 8 and at the end away from the gate plate 19, and sealing rings 26 are clamped in the sealing ring grooves 804.

[0039] Through the above settings, the setting of the spring 1 20 of the utility model can push the valve seat 8 to fit closely with the gate plate 19 to achieve effective sealing, which can effectively prevent medium leakage. The setting of the spring 27 and the sealing ring 9 can push the sealing ring 9 to fit the gate plate 19, further strengthening the sealing between the valve seat 8 and the gate plate 19, which can effectively prevent medium leakage. The setting of the sealing ring 26 of the utility model effectively strengthens the sealing between the valve seat 8 and the valve body 1, which can effectively prevent medium leakage.

[0040] Working principle: when the gate valve needs to be opened or closed, it is only necessary to start the motor 21 to drive the large gear 3 to rotate and thereby drive the small gear 6 to rotate. The rotation of the small gear 6 can drive the valve stem 5 to move up and down, thereby realizing the communication between the flow port 16 and the flow channel 101, realizing the circulation of the medium, and opening and closing the gate valve does not need to be done manually, which is easier and can quickly realize the opening and closing of the gate valve. In addition, the setting of the balance bar makes it possible for the gate plate 19 to be moved upward when the flow port 16 is aligned with the flow channel 101, and the limit portion 17 is just stuck at the upper end of the cavity 15 to limit the up and down movement of the gate plate 19, which can effectively solve the problem of the flow port 16 and the flow channel 101 being out of center. The assembly methods of the motor 21, large gear 3, small gear 6, valve body 1, upper valve cover 12, lower valve cover 14 and flat gate valve of the utility model are all disclosed in the prior art, so they will not be described in detail.

[0041] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A flat gate valve with a balancing rod, comprising a valve body (1) and an upper valve cover (12) connected to the upper end of the valve body (1) by bolts, and a lower valve cover (14) connected to the lower end of the valve body (1) by bolts, wherein a flow channel (101) is provided at the center of the valve body (1), and a cavity 1 (13) and a cavity 2 (15) are provided between the upper valve cover (12) and the valve body (1) and between the lower valve cover (14) and the valve body (1), respectively, wherein: A top cover (11) is fixedly provided at the upper end of the upper valve cover (12) by bolts, a gate plate (19) is provided in the valve body (1), a flow port (16) matching the flow channel (101) is provided at the lower end of the gate plate (19), a valve seat (8) is embedded in the inner wall of the valve body (1) and abuts against both sides of the gate plate (19), a valve stem (5) is fixedly provided at the upper end of the gate plate (19), and the valve stem (5) passes through the cavity (13), the upper valve cover (12) and the top cover (11) in sequence. The fixing part (10) is fixedly connected, and an adjusting structure is arranged inside the top cover (11), and the adjusting structure controls the upward and downward movement of the valve stem (5). A balancing rod is fixedly arranged at the lower end of the gate plate (19), and the balancing rod comprises a lower valve stem (18) and a limiting part (17) fixed at the upper end of the lower valve stem (18), and the limiting part (17) is located in the second cavity (15). The lower valve cover (14) is located at the lower end of the second cavity (15) and is connected to a bottom cavity, and the lower valve stem (18) is located in the bottom cavity.

2. A flat gate valve with a balance rod according to claim 1, characterized in that: A stuffing groove (24) is provided at the position where the upper valve cover (12) contacts the valve stem (5), a sealing stuffing (23) is provided in the stuffing groove (24), a sealing cover plate (25) is provided at the upper end of the sealing stuffing (23), and the sealing cover plate (25) is fixedly connected to the upper end of the upper valve cover (12) by bolts.

3. A flat gate valve with a balance rod according to claim 2, characterized in that: The regulating structure comprises a motor (21), a large gear (3), a small gear (6), a bottom column (2) and a connecting ring (4); the connecting ring (4) is sleeved on the lower end of the outer side of the valve stem (5) and is fixedly connected to the sealing cover plate (25); the center of the small gear (6) is threadedly connected to the valve stem (5); an annular groove (601) is provided at the lower end of the small gear (6); the upper end of the connecting ring (4) is clamped in the annular groove (601); one side of the annular groove (601) An annular rolling groove (602) is provided in communication with each other. A ring (401) is fixedly provided on one side of the upper end of the connecting ring (4) corresponding to the annular rolling groove (602). A plurality of wheel grooves (402) are provided on the end of the ring (401) away from the connecting ring (4). A roller (7) is provided in the wheel groove (402). Rotating columns (701) are fixedly provided at the upper and lower ends of the roller (7). The rotating columns (701) are rotatably connected to the upper and lower ends of the corresponding wheel groove (402) respectively.

4. A flat gate valve with a balance rod according to claim 3, characterized in that: A transverse plate (22) is fixedly provided on one side of the top cover (11), and the motor (21) is fixedly provided on the upper end of the transverse plate (22). The output end of the motor (21) passes through the transverse plate (22) and is fixedly connected to one side of the large gear (3). One side of the large gear (3) is meshed with one side of the small gear (6). The lower end of the bottom column (2) is rotatably connected to the upper end of the upper valve cover (12). A main column (201) is fixedly provided on the upper end of the bottom column (2), and clamping strips (202) are fixedly provided at both ends of the main column (201). An embedded groove (301) is provided at the lower end of the large gear (3) at positions corresponding to the main column (201) and the clamping strip (202), and the embedded groove (301) matches the main column (201) and the clamping strip (202).

5. A flat gate valve with a balance rod according to claim 4, characterized in that: A scale mark (501) is provided on one side of the upper end of the valve stem (5).

6. A flat gate valve with a balance rod according to claim 1, characterized in that: The valve seat (8) is provided with an annular spring groove (803) at one end away from the gate plate (19), and a plurality of springs (20) are fixedly arranged in the annular spring groove (803). The valve seat (8) is provided with an annular spring groove (801) at one end close to the gate plate (19), and a plurality of springs (27) are fixedly arranged in the annular spring groove (801). A sealing ring (9) is fixedly arranged at one end of the spring (27) close to the gate plate (19). An annular clamping portion (901) is fixedly arranged at both upper and lower ends of the sealing ring (9). An annular clamping groove (802) is provided at a position of the annular spring groove (801) corresponding to the annular clamping portion (901), and the annular clamping portion (901) is clamped in the corresponding annular clamping groove (802).

7. A flat gate valve with a balance rod according to claim 6, characterized in that: A sealing ring groove (804) is provided on the outer side of the valve seat (8) and on the end away from the gate plate (19), and a sealing ring (26) is clamped in the sealing ring groove (804).

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