CN211715788U

CN211715788U - Tank bottom valve

Info

Publication number: CN211715788U
Application number: CN202020114438.3U
Authority: CN
Inventors: 刘建华
Original assignee: Shaanxi Aishu Machinery Manufacturing Co ltd
Current assignee: Shaanxi Aishu Machinery Manufacturing Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-10-20
Anticipated expiration: 2030-01-17

Abstract

The utility model relates to a tank bottom valve, which comprises a lower valve body, an upper valve body fixedly connected with the lower valve body, an opening and closing device arranged in the lower valve body and a sealing device arranged in the upper valve body, wherein the lower valve body is far away from one end of the upper valve body and is provided with a water inlet, the lower valve body is far away from one end of the upper valve body, a water outlet pipe is arranged on the peripheral wall of one end of the upper valve body, a rotary seat is coaxially arranged on the upper valve body and the lower valve body, an adjusting screw rod is rotatably arranged on the rotary seat and can move along the axial direction of the rotary seat, a hand wheel capable of driving the adjusting screw rod to rotate is rotatably arranged on the rotary seat, one end of the adjusting screw rod, far away from the hand wheel, is fixedly connected with a guide rod, a safety rod is fixedly arranged on the adjusting screw rod and is fixedly connected, the utility model discloses have the higher effect of reliability.

Description

Tank bottom valve

Technical Field

The utility model belongs to the technical field of the technique of valve and specifically relates to a tank bottoms valve is related to.

Background

The tank bottom valve is a starting and closing device welded to the bottom of the tank and is mainly used in occasions with high pharmaceutical or sanitary levels. At present, a tank bottom valve appearing in markets and data is generally composed of a valve body, an inlet channel communicated with the tank bottom and an outlet channel communicated with the inlet channel are arranged on the valve body, the inlet channel and the outlet channel are connected through a connecting channel, a diaphragm forming the opening and closing of the connecting channel is arranged in the connecting channel, and the diaphragm is driven by a starting actuator.

Chinese patent with publication number CN202561060 discloses a single-seat tank bottom valve, which comprises a valve body, a cylinder fixedly connected with the valve body, a support arranged between the valve body and the cylinder, a tank bottom flange arranged on the tank body, a cover plate connected with the support, a cylinder cover connected with the support, a piston assembly arranged between the cylinder cover and the cylinder cover, a spring arranged between the piston assembly and the cylinder cover, a valve rod sealing ring embedded in a sealing groove of the valve rod, a valve rod sealing member and a cover plate, a guide sleeve matched with the valve rod sealing member, a wear-resistant sleeve matched with the valve rod, and an expansion piston ring embedded in the sealing groove of the piston assembly. Above-mentioned technical scheme during operation, the piston assembly of cylinder can drive the valve rod when flexible and remove the switch that realizes the valve body along the axial of valve body. Therefore, the valve can be opened and closed quickly.

The above prior art solutions have the following drawbacks: the valve is controlled to be opened or closed only by the cylinder, and the valve is also failed after the cylinder is damaged, so that the reliability is low.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the utility model aims at providing a tank bottoms valve that the reliability is higher.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a tank bottoms valve, include lower valve body, with lower valve body fixed connection's last valve body, set up headstock gear and the setting in the valve body down go up sealing device in the valve body, the valve body is kept away from down go up valve body one end and be provided with the water inlet, the valve body is kept away from down be provided with the outlet pipe on the perisporium of going up valve body one end, go up on the valve body with the coaxial roating seat that is provided with of valve body down, it is provided with accommodate the lead screw to rotate on the roating seat, accommodate the lead screw can follow the axial displacement of roating seat, it is provided with the rotatory hand wheel that can drive accommodate the lead screw to rotate on the roating seat, accommodate the lead screw is kept away from hand wheel one end fixedly connected with guide bar, the last fixed bumper bar that is provided with of accommodate the lead screw, the.

By adopting the technical scheme, when the device is installed, the lower valve body is fixedly connected with the tank body, the water inlet is positioned in the tank body, the water outlet is communicated with the water pump, when the device normally works, the rotating hand wheel drives the adjusting screw rod to rotate, so that the adjusting screw rod moves towards the upper valve body along the axial direction of the lower valve body, the adjusting screw rod drives the opening and closing device to synchronously move along the axial direction of the lower valve body, so that the opening and closing device exceeds the water outlet arranged on the lower valve body, at the moment, liquid in the tank body enters the tank bottom valve through the water inlet and then flows out of the tank bottom valve from the water outlet, the adjusting screw rod drives the safety rod to rotate around the axial direction of the adjusting screw rod in the rotating process, and the safety rod is fixedly connected with the guide rod, so that the self-received rotating force is transmitted to the guide rod in the rotating process of the, the reliability of the device is improved.

The present invention may be further configured in a preferred embodiment as: the opening and closing device comprises a valve seat fixedly connected with the guide rod and a sealing ring arranged at one end, far away from the upper valve body, of the lower valve body, the valve seat is arranged to be in a circular truncated cone shape, and the inner wall of the sealing ring corresponds to the valve seat and is arranged to be in a horn shape.

Through adopting above-mentioned technical scheme, accommodate the lead screw drives the disk seat and removes along the axial of lower valve body, when the perisporium butt of disk seat to the internal perisporium of sealing ring, the disk seat is sealed the water inlet with sealed ring, make this tank bottoms valve and jar body no longer communicate, and the disk seat sets up to the round platform shape, the sealing ring internal perisporium that corresponds sets up to loudspeaker form, fitting surface between them is the inclined plane, can produce the extrusion each other when disk seat butt sealing ring, the sealed effect between disk seat and the sealing ring has been improved like this, the device's reliability has been improved.

The present invention may be further configured in a preferred embodiment as: an annular groove is formed in the peripheral wall of the valve seat, and a sealing ring is arranged in the annular groove.

Through adopting above-mentioned technical scheme, the sealing washer can further improve the sealed effect between disk seat and the sealing ring, and because the fitting surface between disk seat and the sealing ring is the inclined plane, the sealing washer warp when receiving the extrusion, has further improved the sealed effect between disk seat and the sealing ring.

The present invention may be further configured in a preferred embodiment as: sealing device include with go up valve body fixed connection's packing box, set up packing in the packing box and with packing box fixed connection's packing gland, the packing gland butt the packing.

Through adopting above-mentioned technical scheme, set up sealing device in last valve body, make sealing device keep away from the water inlet like this and compare the controlling range of the headstock gear of comparison file will increase greatly, during the sealing device installation, place the packing in the seal box, then be in the same place packing gland and packing box fixed connection, and make packing gland butt packing keep away from the one end of water inlet, the installation of packing has been accomplished like this, the internal perisporium of packing and accommodate the lead screw's periphery wall butt, seal between accommodate the lead screw and the last valve body has been accomplished.

The present invention may be further configured in a preferred embodiment as: a counter bore is formed in one end, away from the upper valve body, of the packing gland, and a wear-resistant sleeve is arranged in the counter bore in a sleeved mode.

Through adopting above-mentioned technical scheme, the counter bore is seted up to packing gland one end of keeping away from the valve body, and the ladder shoulder that forms between counter bore and the packing gland is used for being greater than wear-resisting telescopic location, and wear-resisting sleeve is after the installation wear-resisting telescopic internal perisporium with the outer wall of butt accommodate the lead screw, and wear-resisting sleeve forms the protection to packing gland like this, has prolonged packing gland's life-span.

The present invention may be further configured in a preferred embodiment as: an internal thread pipe is sleeved in the upper valve body in a rotating mode, the internal thread pipe is in threaded connection with the adjusting screw rod, and the internal thread pipe is fixedly connected with the hand wheel.

Through adopting above-mentioned technical scheme, the hand wheel drives the internal thread pipe and rotates when rotatory hand wheel, will make accommodate the lead screw remove along the axial of lower valve body when the internal thread pipe is rotatory, has realized like this that accommodate the lead screw removes along the axial of lower valve body.

The present invention may be further configured in a preferred embodiment as: the internal thread pipe with be provided with a plurality of bearings between the last valve body, it is a plurality of that go up the valve body and correspond the bearing is provided with the mounting groove, the internal thread pipe is adjacent be provided with the spacing ring between the bearing.

Through adopting above-mentioned technical scheme, the bearing makes to take place to rotate more easily between internal thread pipe and the last valve body, makes the internal thread pipe set up the spacing ring between adjacent bearing, realizes the injecing to the position of internal thread pipe, and the mounting groove is used for holding the bearing, has realized the swivelling joint between internal thread pipe and the last valve body like this.

The present invention may be further configured in a preferred embodiment as: the lower valve body is provided with a plurality of gaps at the water inlet outlet, and is a plurality of supporting columns are formed between the gaps and fixedly connected with the tank body.

Through adopting above-mentioned technical scheme, a plurality of breachs are used for the internal liquid of jar to get into the water inlet, and the pillar that forms between the breach is used for with the fixed connection of the jar body, has realized the fixed connection of jar body and this tank bottoms valve like this when intaking.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the safety rod is arranged to assist the adjusting screw rod to drive the opening and closing device to rotate, so that the reliability of the device is improved;

2. the service life of the packing gland is prolonged by arranging the wear-resistant sleeve between the packing gland and the adjusting screw rod.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a partial cross-sectional view of portion A of FIG. 1;

FIG. 3 is a partial cross-sectional view of portion B of FIG. 1;

fig. 4 is a partial sectional view of the portion C of fig. 1.

In the figure, 1, a lower valve body; 11. a water inlet; 12. a water outlet pipe; 13. a notch; 14. a pillar; 2. an upper valve body; 21. a rotating base; 22. adjusting the screw rod; 23. a hand wheel; 24. a guide bar; 25. a bumper; 26. an internally threaded tube; 261. a limiting ring; 27. mounting grooves; 28. a bearing; 3. a sealing device; 31. a packing box; 32. packing; 33. packing gland; 331. a counter bore; 332. a wear sleeve; 4. an opening and closing device; 41. a valve seat; 411. an annular groove; 412. a seal ring; 42. and (4) a sealing ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a tank bottom valve, including lower valve body 1, with lower valve body 1 fixed connection's last valve body 2, set up headstock gear 4 in valve body 1 down and set up the sealing device 3 in last valve body 2, lower valve body 1 is kept away from last valve body 2 one end and is provided with water inlet 11, is provided with outlet pipe 12 on the perisporium of last valve body 2 one end was kept away from to lower valve body 1. In this embodiment, go up valve body 2 and the coaxial setting of lower valve body 1, go up and be connected through the ring flange between valve body 2 and the lower valve body 1, go up and be provided with the flange gasket between valve body 2 and the lower valve body 1, go up valve body 2 and accomplish by the steel sheet and form.

Referring to fig. 1, the lower valve body 1 is provided with a plurality of gaps 13 at the outlet of the water inlet 11, a support column 14 is formed between the plurality of gaps 13, and the support column 14 is fixedly connected with the tank body. In this embodiment, the notches 13 are four and semicircular, four pillars 14 are correspondingly formed, and the pillars 14 are welded to the tank body.

Referring to fig. 1, a rotating base 21 is arranged on an upper valve body 2, the rotating base 21 and a lower valve body 1 are coaxially arranged, an adjusting screw rod 22 is rotatably arranged on the rotating base 21, the adjusting screw rod 22 can move along the axial direction of the rotating base 21, a hand wheel 23 capable of driving the adjusting screw rod 22 to rotate is rotatably arranged on the rotating base 21, the adjusting screw rod 22 is far away from one end of the hand wheel 23 and is fixedly connected with a guide rod 24, a safety rod 25 is fixedly arranged on the adjusting screw rod 22, the safety rod 25 is fixedly connected with the guide rod 24, and the guide rod 24 is fixedly connected with an opening and closing device 4. In this embodiment, the roating seat 21 includes with last valve body 2 fixed connection's lower roating seat 21 and with lower roating seat 21 screwed connection's upper roating seat 21, adjusts between pole and the guide bar 24 by bolt fixed connection, and guide bar 24 sets up to squarely, has cup jointed the fixed block on the guide bar 24, and the fixed block welds with bumper 25.

Referring to fig. 1, the opening and closing device 4 includes a valve seat 41 fixedly connected to the guide rod 24 and a sealing ring 42 disposed at an end of the lower valve body 1 far from the upper valve body 2, the valve seat 41 is disposed in a circular truncated cone shape, and an inner wall of the sealing ring 42 corresponding to the valve seat 41 is disposed in a horn shape. An annular groove 411 is formed in the peripheral wall of the valve seat 41, and a seal ring 412 is disposed in the annular groove 411. In this embodiment, the guide rod 24 is connected to the valve seat 41 by bolts, the sealing ring 42 is welded in the lower valve body 1, and the sealing ring 412 is made of nitrile rubber.

Referring to fig. 2, the sealing device 3 includes a packing box 31 fixedly connected to the upper valve body 2, a packing 32 provided in the packing box 31, and a packing 32 pressing cover fixedly connected to the packing box 31, and the packing 32 pressing cover abuts against the packing 32. A counter bore 331 is formed in one end, far away from the upper valve body 2, of the packing 32 pressing cover, and a wear-resistant sleeve 332 is arranged in the counter bore 331 in a sleeved mode. In this embodiment, the packing box 31 is welded to the flange of the upper valve body 2, the wear-resistant sleeve 332 is made of copper, the gland of the packing 32 is in threaded connection with the packing box 31, and the oil cup is arranged below the packing box 31 and the packing 32.

Referring to fig. 3 and 4, an internal threaded tube 26 is rotatably sleeved in the rotary seat 21, the internal threaded tube 26 is in threaded connection with the adjusting screw 22, and the internal threaded tube 26 is fixedly connected with the hand wheel 23. A plurality of bearings 28 are provided between the internally threaded tube 26 and the upper valve body 2, the upper valve body 2 is provided with mounting grooves 27 corresponding to the plurality of bearings 28, and a stopper 261 is provided between the adjacent bearings 28 of the internally threaded tube 26. In this embodiment, the internal thread is in key connection with the hand wheel 23, two bearings 28 are provided, the bearings 28 are thrust ball bearings 28, one corresponding limiting ring 261 is provided, and an oil cup is provided at a position of the rotary base 21 corresponding to the limiting ring 261.

The implementation principle of the embodiment is as follows: when the device is installed, the lower valve body 1 is welded with the tank body, so that the water inlet 11 is positioned in the tank body, and the water outlet is communicated with the water pump; when the device works normally, the rotating hand wheel 23 drives the internal thread pipe 26 to rotate, the rotating internal thread pipe 26 enables the adjusting screw rod 22 to move towards the upper valve body 2 along the axial direction of the lower valve body 1 through threads, the adjusting screw rod 22 drives the valve cover to move synchronously along the axial direction of the lower valve body 1, in the process, the safety rod 25 fixedly connected with the screw rod synchronously rotates around the axis of the adjusting screw rod 22 along with the adjusting screw rod 22, the torsional force borne by the safety rod 25 is also transmitted to the guide rod 24 to drive the guide rod 24 to rotate, when the valve seat 41 is separated from the sealing ring 42, the tank bottom valve is opened, liquid can enter the tank bottom valve through the plurality of gaps 13, and the liquid is discharged out of the tank bottom valve through the water outlet, when the axial height position of the opening and closing device 4 along the lower valve body 1 exceeds the water outlet arranged on the lower valve body 1, the tank bottom valve is completely opened, and the tank bottom valve reaches the maximum flow at the moment. When the liquid of the tank body is overflown into the tank bottom valve too much, the packing box 31 is sealed because the inner wall of the packing box 32 is abutted against the outer wall of the screw rod. The valve seat 41 is in a circular truncated cone shape, the inner wall of the corresponding sealing ring 42 is in a horn shape, and the sealing ring 412 is arranged on the valve seat 41, so that the sealing performance between the valve seat 41 and the sealing ring 42 is improved; the wear sleeve 332 increases the life of the gland of the packing 32, and the internally threaded tube 26 is fixed with a stop ring 261 provided on the internally threaded tube 26 by two bearings 28.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a tank bottom valve, include lower valve body (1), with lower valve body (1) fixed connection last valve body (2), headstock gear (4) and the setting of setting in lower valve body (1) are in go up sealing device (3) in valve body (2), keep away from down valve body (1) it is provided with water inlet (11) to go up valve body (2) one end, keep away from down valve body (1) be provided with outlet pipe (12), its characterized in that on the perisporium of going up valve body (2) one end: go up on the valve body (2) with the coaxial roating seat (21) that is provided with of lower valve body (1), it is provided with accommodate the lead screw (22) to rotate on roating seat (21), accommodate the lead screw (22) can be followed the axial displacement of roating seat (21), it is provided with hand wheel (23) that can drive accommodate the lead screw (22) rotation to rotate on roating seat (21), accommodate the lead screw (22) are kept away from hand wheel (23) one end fixedly connected with guide bar (24), the last fixed bumper bar (25) that is provided with of accommodate the lead screw (22), bumper bar (25) with guide bar (24) fixed connection, guide bar (24) with headstock gear (4) fixed connection.

2. A canister bottom valve according to claim 1, characterised in that: the opening and closing device (4) comprises a valve seat (41) fixedly connected with the guide rod (24) and a sealing ring (42) arranged at one end of the upper valve body (2) far away from the lower valve body (1), the valve seat (41) is arranged to be in a circular truncated cone shape, and the inner wall of the sealing ring (42) corresponds to the valve seat (41) and is arranged to be in a horn shape.

3. A canister bottom valve according to claim 2, characterised in that: an annular groove (411) is formed in the peripheral wall of the valve seat (41), and a sealing ring (412) is arranged in the annular groove (411).

4. A canister bottom valve according to claim 1, characterised in that: sealing device (3) include with go up valve body (2) fixed connection's packing box (31), set up packing (32) in packing box (31) and with packing box (31) fixed connection's packing (32) gland, packing (32) gland butt packing (32).

5. A tank bottom valve according to claim 4, characterised in that: a counter bore (331) is formed in one end, far away from the upper valve body (2), of the gland of the packing (32), and a wear-resistant sleeve (332) is arranged in the counter bore (331) in an inner sleeve mode.

6. A canister bottom valve according to claim 1, characterised in that: an internal threaded pipe (26) is sleeved in the rotary seat (21) in a rotating mode, the internal threaded pipe (26) is in threaded connection with the adjusting screw rod (22), and the internal threaded pipe (26) is fixedly connected with the hand wheel (23).

7. A canister bottom valve according to claim 6, characterised in that: the internal thread pipe (26) with be provided with a plurality of bearings (28) between last valve body (2), it is a plurality of to go up valve body (2) correspond bearing (28) are provided with mounting groove (27), internal thread pipe (26) are adjacent be provided with spacing ring (261) between bearing (28).

8. A canister bottom valve according to claim 1, characterised in that: lower valve body (1) in water inlet (11) play department is provided with a plurality of breachs (13), and is a plurality of form pillar (14) between breach (13), pillar (14) and jar body fixed connection.