CN219510173U - Tank bottom diaphragm valve - Google Patents

Abstract

The utility model relates to a tank bottom diaphragm valve, which relates to the technical field of diaphragm valves, and comprises a valve body, a valve cover and a valve rod, wherein a valve cavity is formed in the valve body, a spacer block is arranged on the inner wall of the valve cavity, an annular boss is arranged on the side surface of the valve cover, which is opposite to the valve body, an adjusting threaded hole for screwing in the valve rod is formed in the annular boss, a first sealing gasket is arranged on a side surface opening cover, which is close to the valve cover, of the valve body, a valve clack which is in butt joint with the first sealing gasket is rotationally connected to the end part of the valve rod, which is positioned in the valve cover, and when the diaphragm valve is closed, the side surface, which is opposite to the valve clack, of the first sealing gasket is butt joint with the spacer block; the outer peripheral surface of the valve rod positioned at the outer side of the valve cover is fixedly sleeved with a connecting sleeve; the utility model judges whether the diaphragm valve is tightly closed or not through the distance between the connecting sleeve and the valve cover, and simultaneously reduces the possibility of permanent deformation or breakage of the first sealing gasket inside caused by excessive rotation of the valve rod.

Description

Tank bottom diaphragm valve

Technical Field

The utility model relates to the technical field of diaphragm valves, in particular to a tank bottom diaphragm valve.

Background

The diaphragm valve is a stop valve which uses a diaphragm as a start-stop piece to seal a flow passage and cut off fluid and separate the inner cavity of the valve body from the inner cavity of the valve cover, has the advantages of simple structure, good sealing and corrosion resistance, small fluid resistance and is used for low-pressure, low-temperature, strong-corrosivity and medium containing suspended substances.

In the related art, a tank bottom diaphragm valve comprises a valve seat, a drain pipe, a valve cover, a valve rod and a valve handle, wherein one side of the valve seat is connected with a lower end socket of a material tank, a pipeline connector and the drain pipe are fixedly connected with the other side of the valve seat, the valve cover is fixed on the outer side wall of the pipeline connector of the valve seat through a locking bolt, a valve cavity is formed between the valve cover and a valve body, one end of the valve rod penetrates through the valve cover and is inserted into the valve cavity, the valve cover is in threaded fit with the valve cover, the valve rod is fixedly connected with the valve handle at the end part of the valve rod, which is positioned in the valve cavity, is provided with a diaphragm made of flexible rubber, and the valve rod is driven to rotate through the valve handle, so that the valve plate and the diaphragm move along the length direction of the valve rod to control the opening and closing of the diaphragm valve.

When the valve rod is rotated to drive the diaphragm to abut against the inner wall of the valve cavity, the diaphragm valve is closed, and an operator cannot observe the closing condition of the inner wall, so that the valve rod can be excessively rotated when the valve rod is controlled to rotate, the diaphragm is damaged due to the fact that the valve rod is excessively rotated to generate permanent deformation, the service performance of the diaphragm valve is affected, and the condition of liquid leakage can be caused.

Disclosure of Invention

The utility model aims to provide a tank bottom diaphragm valve, which solves the problem that an operator can cause permanent deformation and even abrasion of a diaphragm due to excessive rotation of a valve rod when controlling the opening and closing of the diaphragm valve in the related art.

The utility model provides a tank bottom diaphragm valve which adopts the following technical scheme:

the utility model provides a tank bottom diaphragm valve, includes valve body, valve gap and valve rod, the valve body passes through bolt fixed connection with the valve gap, the valve pocket has been seted up in the valve body, be equipped with the spacer on the inner wall of valve pocket, the valve gap is equipped with annular boss in the side of valve body dorsad, be equipped with the regulation screw hole that supplies the valve rod screw in on the annular boss, the hand wheel is installed to the valve rod that is located the valve gap outside, the valve body is close to the side opening lid of valve gap and is equipped with the first sealing pad that has elastic deformation ability, the valve rod tip that is located the valve gap is inside rotates and is connected with the valve clack with first sealing pad butt, when the diaphragm valve is closed, the side and the spacer butt of first sealing pad dorsad valve clack; the connecting sleeve is fixedly sleeved on the outer peripheral surface of the valve rod positioned at the outer side of the valve cover, and in the rotating process of the valve rod relative to the valve cover, the connecting sleeve moves towards the direction approaching or far away from the valve cover.

Through adopting above-mentioned technical scheme, in the opening or the closed in-process of diaphragm valve, through the installation setting of adapter sleeve, operating personnel rotates the hand wheel, makes the valve rod rotate relative valve gap, and in this process, drives the adapter sleeve and is moved to the direction that is close to or keep away from the valve gap, and the operator can judge whether this diaphragm valve is closed tightly through observing the distance between adapter sleeve and the valve gap, also reduces the valve rod and rotates the possibility that causes inside first sealing pad permanent deformation or damage excessively simultaneously, improves the performance of diaphragm valve.

Optionally, an external thread is arranged on the outer peripheral surface of the valve rod positioned at the outer side of the valve cover, and a fixing screw hole for screwing in the valve rod is arranged on the connecting sleeve.

Through adopting above-mentioned technical scheme, because adapter sleeve and the outer peripheral face screw-thread fit of valve rod, when the size of diaphragm valve is different, operating personnel can adjust the relative position of adapter sleeve on the valve rod through the relative rotation between control adapter sleeve and the valve rod to this is convenient for adjust the relative mounted position of adapter sleeve.

Optionally, the outer peripheral surface of adapter sleeve evenly distributed has a plurality of first tooth grooves, the side that the hand wheel is close to the valve gap is equipped with the installation cavity that supplies the adapter sleeve to put into, evenly distributed has a plurality of second tooth grooves with first tooth groove meshing on the inner wall of installation cavity.

By adopting the technical scheme, in the installation process of the connecting sleeve, the assembly stability between the hand wheel and the connecting sleeve is improved through the meshing fit of the first tooth groove and the second tooth groove, and the possibility of relative looseness between the hand wheel and the connecting sleeve in the rotation process is reduced.

Optionally, the side of adapter sleeve back to the hand wheel overlaps the outer peripheral face of locating annular boss, and the diaphragm valve is in the use, the adapter sleeve overlaps the outer peripheral face of locating annular boss all the time.

Through adopting above-mentioned technical scheme, in the diaphragm valve in the use, the adapter sleeve overlaps the outer peripheral face of locating annular boss all the time to this reduces external impurity or dust and enters into the valve gap inside from annular boss and valve rod, improves the sealed barrier propterty of this diaphragm valve.

Optionally, the upside of valve gap is equipped with the snap ring that is different from adapter sleeve colour, the outer peripheral face of annular boss is equipped with the annular caulking groove that supplies the snap ring cover to set up into, the external diameter size of snap ring does not surpass the biggest external diameter size of annular boss.

Through adopting above-mentioned technical scheme, at the hand wheel rotation in-process, drive the cover and establish the adapter sleeve at annular boss outer peripheral face and remove along the length direction of valve rod, because the colour of snap ring is different from the colour of valve body, operating personnel can shelter from the how much of snap ring through judging the adapter sleeve, comes the judgement diaphragm valve's the state of opening and close to this reduces valve rod and rotates excessively and cause the possibility of inside first sealing pad permanent deformation or damage.

Optionally, an annular raised line is arranged on the inner wall of the snap ring, and an annular groove for inserting the annular raised line is arranged on the inner wall of the annular caulking groove.

By adopting the technical scheme, the mounting stability of the clamping ring is improved, and the possibility that the clamping ring breaks away from the annular caulking groove on the annular boss is reduced.

Optionally, a sealing strip is arranged on the side surface, close to the spacing block, of the first sealing pad.

Through adopting above-mentioned technical scheme, when this diaphragm valve is closed, the valve rod rotates and drives the valve clack and remove, and then drives first sealed pad and remove to the direction that is close to the spacer, makes the sealing strip receive the extrusion and with spacer butt to this sealing performance when improving this diaphragm valve and closing.

Optionally, a second sealing gasket is arranged on the side surface, facing away from the spacer block, of the first sealing gasket.

Through adopting above-mentioned technical scheme, in the use of this diaphragm valve, through the setting of second sealing washer, improve the sealing performance between the installation clearance between valve body and the valve gap.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. through the installation setting of adapter sleeve, at the opening or the closed in-process of diaphragm valve, operating personnel rotates the hand wheel, makes the valve rod rotate relative valve gap, and in this process, drives the adapter sleeve and moves to the direction that is close to or keep away from the valve gap, judges whether this diaphragm valve is closed tightly through the distance between adapter sleeve and the valve gap, also reduces the valve rod and rotates the possibility that causes inside first sealing pad permanent deformation or damage excessively simultaneously, reduces the possibility that the diaphragm valve revealed when closing, improves the performance of diaphragm valve.

2. By the meshing and matching of the first tooth groove and the second tooth groove, the assembly stability between the hand wheel and the connecting sleeve is improved in the installation process of the connecting sleeve, and the possibility of relative looseness between the hand wheel and the connecting sleeve in the rotation process is reduced; through the outer peripheral surface screw thread cooperation of adapter sleeve and valve rod, when the size of diaphragm valve is different, the relative position of adapter sleeve on the valve rod can be adjusted through the relative rotation between control adapter sleeve and the valve rod to this is convenient for adjust the relative installation position of adapter sleeve.

3. In the use process of the diaphragm valve, the connecting sleeve is always sleeved on the outer peripheral surface of the annular boss, so that the possibility that external impurities or dust enter the valve cover from a gap between the annular boss and the valve rod is reduced, and the sealing performance of the diaphragm valve is improved.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

fig. 4 is a schematic view of a partial cross-sectional structure of an embodiment of the present utility model showing the engagement of the connection sleeve with the hand wheel.

In the figure, 1, a valve body; 11. a feed inlet; 12. a discharge port; 13. a valve cavity; 131. a spacer block; 14. a first gasket; 141. a positioning strip; 142. a sealing strip; 15. a second gasket; 151. positioning holes; 2. a valve cover; 21. an annular boss; 211. adjusting the threaded hole; 212. an annular caulking groove; 213. an annular groove; 22. a valve flap; 221. a positioning groove; 3. a valve stem; 4. a hand wheel; 41. a mounting cavity; 411. a second tooth slot; 5. connecting sleeves; 51. fixing the screw holes; 52. a first tooth slot; 6. a clasp; 61. annular convex strips.

Detailed Description

The present utility model will be described in further detail below with reference to the accompanying drawings.

Examples:

referring to fig. 1, a tank bottom diaphragm valve comprises a valve body 1 and a valve cover 2, wherein the valve body 1 and the valve cover 2 are fixedly connected through bolts, a feed inlet 11 and a discharge outlet 12 are arranged on the valve body 1, and the outer side edge of the feed inlet 11 is fixedly connected with the tank bottom through welding or other fixing modes; when the diaphragm valve is in an open state, the material in the tank body enters through the feed port 11 of the valve body 1 and then is discharged from the discharge port 12.

Referring to fig. 2, a valve cavity 13 is formed in a valve body 1, a valve rod 3 and a hand wheel 4 are arranged on the side surface of a valve cover 2, an annular boss 21 is fixedly arranged on the side surface of the valve cover 2, which is opposite to the valve body 1, an adjusting threaded hole 211 for screwing in the valve rod 3 is formed in the annular boss 21, the valve rod 3 positioned on the outer side of the valve cover 2 is fixedly connected with the hand wheel 4 through a screw, and a valve clack 22 is rotatably connected to the end part of the valve rod 3 positioned in the valve cover 2; the valve rod 3 is driven to synchronously rotate by rotating the hand wheel 4, and meanwhile, the valve clack 22 is driven to move along the length direction of the valve rod 3 in the valve cover 2.

Referring to fig. 2, a first gasket 14 and a second gasket 15 having elastic deformation properties are provided between the valve body 1 and the valve cover 2, the first gasket 14 covers an opening of the valve body 1 near the valve cover 2, and the second gasket 15 is located between the first gasket 14 and the valve flap 22, and both the first gasket 14 and the second gasket 15 are protruded in a direction near the valve flap 22; when the valve body 1 and the valve cover 2 are fixed through bolts, the outer edges of the first sealing gasket 14 and the second sealing gasket 15 are arranged between the valve body 1 and the valve cover 2, and the side surface, close to the valve cover 2, of the valve body 1 presses the first sealing gasket 14 and the second sealing gasket 15 and is further fixed through bolts, so that the first sealing gasket 14 and the second sealing gasket 15 are synchronously installed and fixed while the valve body 1 and the valve cover 2 are assembled and fixed.

Referring to fig. 2, a positioning bar 141 is disposed on a side of the first sealing pad 14 near the valve clack 22, a positioning hole 151 through which the positioning bar 141 passes is disposed on the second sealing pad 15, a positioning groove 221 in which the positioning bar 141 is embedded and fixedly connected is disposed on the valve clack 22, and a side of the valve clack 22 facing away from the valve rod 3 abuts against the second sealing pad 15.

Referring to fig. 2, a spacer 131 is fixedly arranged on the inner wall of the valve cavity 13, and a sealing strip 142 is arranged on the side surface of the first sealing gasket 14, which is close to the spacer 131; when the diaphragm valve is closed, the valve rod 3 rotates to drive the valve clack 22 to move, and then the first sealing gasket 14 is driven to move towards the direction close to the spacing block 131, so that the sealing strip 142 is extruded and is abutted against the side surface of the spacing block 131 close to the first sealing gasket 14, and the diaphragm valve is closed; when the diaphragm valve is opened, the valve flap 22 moves away from the spacer 131, and the first gasket 14 and the second gasket 15 recover.

Referring to fig. 2, an external thread is provided on the outer circumferential surface of the valve rod 3 positioned outside the valve cap 2, a connecting sleeve 5 is fixedly sleeved on the outer circumferential surface of the valve rod 3 positioned outside the valve cap 2, a fixing screw hole 51 for screwing in the valve rod 3 is provided on the connecting sleeve 5, the connecting sleeve 5 is in threaded fit with the outer circumferential surface of the valve rod 3, and the relative position of the connecting sleeve 5 on the valve rod 3 is adjusted by controlling the relative rotation between the connecting sleeve 5 and the valve rod 3; the hand wheel 4 is rotated to enable the valve rod 3 to rotate relative to the valve cover 2, in the process, the connecting sleeve 5 is driven to move towards the direction approaching or far away from the valve cover 2, an operator judges whether the diaphragm valve is tightly closed by observing the distance between the connecting sleeve 5 and the valve cover 2, and meanwhile, excessive rotation of the valve rod 3 is avoided, so that the possibility that the first sealing gasket 14 and the second sealing gasket 15 in the valve rod 3 are permanently deformed or damaged due to excessive rotation is reduced, and the service performance of the diaphragm valve is improved.

Referring to fig. 2 and 3, the side surface of the connecting sleeve 5 facing away from the hand wheel 4 is sleeved on the outer circumferential surface of the annular boss 21, and in the use process of the diaphragm valve, the connecting sleeve 5 is always sleeved on the outer circumferential surface of the annular boss 21, namely, when the diaphragm valve is in a fully opened state, a part of the connecting sleeve 5 is still sleeved on the outer side surface of the annular boss 21; therefore, external impurities or dust can be reduced from entering the valve cover 2 from the gap between the annular boss 21 and the valve rod 3, and the sealing performance of the diaphragm valve can be improved.

Referring to fig. 2 and 3, a snap ring 6 having a color different from that of the connecting sleeve 5 is provided on the upper side of the valve cover 2, an annular insertion groove 212 into which the snap ring 6 is inserted is provided on the outer circumferential surface of the annular boss 21, and the outer diameter size of the snap ring 6 is not greater than the maximum outer diameter size of the annular boss 21; an annular raised line 61 is arranged on the inner wall of the snap ring 6, and an annular groove 213 for inserting the annular raised line 61 is arranged on the inner wall of the annular caulking groove 212, so that the snap ring 6 and the annular boss 21 are assembled; in the rotation process of the hand wheel 4, the connecting sleeve 5 sleeved on the outer peripheral surface of the annular raised strip 61 is driven to move along the length direction of the valve rod 3, and an operator judges the opening and closing state of the diaphragm valve by observing the amount of shielding of the connecting sleeve 5 by the clamping ring 6 due to the fact that the color of the clamping ring 6 is different from that of the valve body 1.

Referring to fig. 4, a plurality of first tooth grooves 52 are uniformly distributed on the outer peripheral surface of the connecting sleeve 5, a mounting cavity 41 for placing the connecting sleeve 5 is formed in the side surface, close to the valve cover 2, of the hand wheel 4, a plurality of second tooth grooves 411 meshed with the first tooth grooves 52 are uniformly distributed on the inner wall of the mounting cavity 41, and through meshing cooperation of the first tooth grooves 52 and the second tooth grooves 411, the assembly stability between the hand wheel 4 and the connecting sleeve 5 is improved, and the possibility of relative looseness between the hand wheel 4 and the connecting sleeve 5 in the rotation process is reduced.

The implementation principle of the embodiment of the utility model is as follows:

in the closing process of the diaphragm valve, the hand wheel 4 is rotated to drive the valve rod 3 to rotate, and the valve rod 3 rotates to drive the valve clack 22 inside to squeeze the first sealing gasket 14 and the second sealing gasket 15, so that the sealing strip 142 on the first sealing gasket 14 is squeezed and is abutted against the upper side surface of the spacing block 131; simultaneously, the valve rod 3 rotates to drive the connecting sleeve 5 to synchronously rotate, so that the connecting sleeve 5 sleeved on the annular boss 21 moves towards the direction close to the valve cover 2, and the extrusion state of the valve clack 22 in the diaphragm valve to the first sealing gasket 14 is judged by observing the amount of the blocking ring 6 shielded by the connecting sleeve 5.

In the opening observation of the diaphragm valve, the hand wheel 4 is reversely rotated to drive the valve rod 3 to rotate, so that the valve clack 22 moves along the direction away from the spacing block 131, and the first sealing gasket 14 and the second sealing gasket 15 restore to the original state due to the elastic deformation performance of the first sealing gasket 14 and the second sealing gasket 15; meanwhile, the connecting sleeve 5 moves along the direction away from the valve cover 2, and the opening and closing states of the diaphragm valve are judged through the number of the clamp rings 6 exposed.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. The utility model provides a tank bottom diaphragm valve, includes valve body (1), valve gap (2) and valve rod (3), valve body (1) and valve gap (2) pass through bolt fixed connection, offer valve pocket (13) in valve body (1), be equipped with spacer block (131) on the inner wall of valve pocket (13), the side of valve gap (2) back to valve body (1) is equipped with annular boss (21), be equipped with on annular boss (21) and supply valve rod (3) screw in regulation screw hole (211), be located valve rod (3) outside valve gap (2) install hand wheel (4), the side opening lid that valve body (1) is close to valve gap (2) is equipped with first sealing pad (14) that have elastic deformation ability, be located valve rod (3) tip rotation in valve gap (2) inside is connected with valve clack (22) with first sealing pad (14) butt, when the diaphragm valve is closed, the side of first sealing pad (14) back to valve clack (22) and spacer block (131) butt;

the valve is characterized in that a connecting sleeve (5) is fixedly sleeved on the outer peripheral surface of the valve rod (3) positioned on the outer side of the valve cover (2), and the connecting sleeve (5) moves towards a direction approaching or far away from the valve cover (2) in the rotating process of the valve rod (3) relative to the valve cover (2).

2. A tank bottom diaphragm valve according to claim 1, characterized in that the outer peripheral surface of the valve rod (3) positioned outside the valve cover (2) is provided with external threads, and the connecting sleeve (5) is provided with a fixed screw hole (51) for screwing the valve rod (3).

3. The tank bottom diaphragm valve according to claim 1, wherein a plurality of first tooth grooves (52) are uniformly distributed on the outer peripheral surface of the connecting sleeve (5), a mounting cavity (41) for placing the connecting sleeve (5) is formed in the side surface, close to the valve cover (2), of the hand wheel (4), and a plurality of second tooth grooves (411) meshed with the first tooth grooves (52) are uniformly distributed on the inner wall of the mounting cavity (41).

4. The tank bottom diaphragm valve according to claim 1, wherein the side surface of the connecting sleeve (5) facing away from the hand wheel (4) is sleeved on the outer circumferential surface of the annular boss (21), and the connecting sleeve (5) is always sleeved on the outer circumferential surface of the annular boss (21) in the use process of the diaphragm valve.

5. The tank bottom diaphragm valve according to claim 4, wherein a clamping ring (6) with a color different from that of the connecting sleeve (5) is arranged on the upper side of the valve cover (2), an annular embedding groove (212) into which the clamping ring (6) is sleeved is arranged on the outer peripheral surface of the annular boss (21), and the outer diameter size of the clamping ring (6) does not exceed the maximum outer diameter size of the annular boss (21).

6. The tank bottom diaphragm valve according to claim 5, wherein an annular raised line (61) is provided on the inner wall of the snap ring (6), and an annular groove (213) into which the annular raised line (61) is inserted is provided on the inner wall of the annular caulking groove (212).

7. A tank bottom diaphragm valve according to claim 1, characterized in that the side of the first gasket (14) adjacent to the spacer block (131) is provided with a sealing strip (142).

8. A tank bottom diaphragm valve according to claim 1, characterized in that the side of the first gasket (14) facing away from the spacer block (131) is provided with a second gasket (15).