CN219472829U

CN219472829U - Balancing valve and coating equipment

Info

Publication number: CN219472829U
Application number: CN202320230455.7U
Authority: CN
Inventors: 张方松
Original assignee: Dongguan Songshanhu Jiatuo Intelligent Equipment Co ltd
Current assignee: Dongguan Songshanhu Jiatuo Intelligent Equipment Co ltd
Priority date: 2023-02-14
Filing date: 2023-02-14
Publication date: 2023-08-04
Anticipated expiration: 2033-02-14

Abstract

The utility model discloses a balance valve and coating equipment, wherein the balance valve comprises a valve body, the valve body is provided with a valve body cavity, the valve body comprises a feed inlet arranged at the bottom end of the valve body, a discharge outlet arranged at the side surface of the valve body and a top opening, the feed inlet, the discharge outlet and the top opening are all communicated with the valve body cavity, the top opening end is hermetically connected with a sleeve, a valve rod is arranged in the sleeve, a spring is arranged between the valve rod and the sleeve, the top of the sleeve is provided with an adjusting nut, a valve sleeve is arranged in the valve body cavity, a valve core is arranged in the valve sleeve, the valve core is provided with a plurality of balance holes penetrating through the valve core, the balance holes are communicated with two part of valve body cavities divided by the valve core, and one end of the valve rod is inserted into the valve body cavity and fixedly connected with the valve core.

Description

Balancing valve and coating equipment

Technical Field

The utility model relates to the technical field of valves, in particular to a balance valve and coating equipment.

Background

In the coating equipment, in order to ensure the stability of the supplied slurry and eliminate the flow fluctuation caused by the inlet and outlet pressure fluctuation, a balance valve is generally arranged on a slurry inlet pipe or a slurry return pipe, but the existing balance valve has certain limitations, the flow range and the pressure difference range applicable to the valve with standard specification are very limited, and the valve does not have the function of unidirectional stable pressure and flow rate.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the balance valve and the coating equipment, and the structure of the balance valve is improved, and the passive spring structure is arranged in the balance valve, so that the balance valve has unidirectional stable pressure and flow velocity from a feed inlet to a discharge outlet.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a balanced valve, includes the valve body, the valve body is equipped with the valve body inner chamber, the valve body is including locating the feed inlet of valve body bottom end, locating the discharge gate and the open top of valve body side, feed inlet, discharge gate and open top all with valve body inner chamber intercommunication, open top end sealing connection has the sleeve, telescopic inside is equipped with the valve rod, be equipped with the spring between valve rod and the sleeve, telescopic top is equipped with adjusting nut, be equipped with the valve pocket in the valve body inner chamber, be equipped with the case in the valve pocket, the case is equipped with a plurality of to link up the balance hole of case, the balance hole intercommunication is cut apart by the case two parts valve body inner chamber, the one end of valve rod inserts in the valve body inner chamber and with case fixed connection.

As a further improvement of the scheme, a gap is arranged between the valve core and the valve sleeve, and a sealing ring is sleeved on the periphery of the valve core to realize sliding sealing with the valve sleeve.

As a further improvement of the scheme, the valve rod is connected with the valve core through a valve rod pressing sleeve.

As a further improvement of the scheme, the sleeve is in sealing connection with the top opening through the valve cover, a gap is formed between the valve rod and the valve cover, and sliding retardation can be reduced while sealing is achieved.

As a further improvement of the scheme, the valve cover is provided with a plurality of exhaust holes, and the exhaust holes can be inserted into the plugs to realize sealing.

As a further improvement of the scheme, the end part of the spring is provided with a spring retainer ring which is fixedly connected with the valve rod, so that the valve rod can drive the spring to move together when moving.

As a further improvement of the scheme, a plurality of discharge holes are formed in the valve sleeve, and the discharge holes can be used for conveying materials conveyed by the feed inlet to the discharge outlet.

As a further improvement of the scheme, the upper end and the lower end of the valve sleeve are respectively provided with a star-shaped sealing ring and an O-shaped sealing ring.

As a further improvement of the scheme, a positioning boss is arranged at the upper end of the valve sleeve, and the star-shaped sealing ring is arranged on the positioning boss.

A coating apparatus comprising a balancing valve as described above, said balancing valve being arranged on the feed line of a coating die.

The beneficial effects of the utility model are as follows:

the utility model provides a balance valve and coating equipment, wherein a passive spring structure is arranged in the balance valve by improving the structure of the balance valve, when the pressure and the flow rate of a feed inlet fluctuate, the volume of feed liquid flowing into the other side of a valve core through a balance hole changes, so that the pressure of the upper side of the valve core fluctuates, the valve core moves to a new balance position for balancing the stress again, the opening of a discharge port is adjusted, the influence of the fluctuation of the feed pressure on the discharge is absorbed, and the unidirectional stable pressure and flow rate from the feed inlet to the discharge port are realized.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view of the assembly of the present utility model;

fig. 2 is a cross-sectional view taken along A-A in fig. 1.

Detailed Description

The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the utility model can be interactively combined on the premise of no contradiction and conflict.

Referring to fig. 1 and 2, a balance valve comprises a valve body 1, wherein the valve body 1 is provided with a valve body inner cavity, the valve body 1 comprises a feed inlet 12 arranged at the bottom end of the valve body, a discharge outlet 11 arranged at the side surface of the valve body and a top opening 13, and the feed inlet 12, the discharge outlet 11 and the top opening 13 are all communicated with the valve body inner cavity.

The top opening 13 is connected with the sleeve 4 in a sealing manner, a valve rod 42 is arranged in the sleeve 4, a spring 41 is arranged between the valve rod 42 and the sleeve 4, the spring 41 is a rectangular spring, a spring retainer 411 is arranged at the end part of the spring 41, and the spring retainer 411 is fixedly connected with the valve rod 42 through a pin 43, so that the valve rod 42 can drive the spring 41 to move together when moving.

The sleeve 4 with through valve gap 3 sealing connection between the open-top 13, when the installation, valve gap 3 and valve body 1 can accurate location be connected, are equipped with sealing ring 31 in the valve gap 3, further consolidate sealed effect, have the clearance between valve rod 42 and the valve gap 3, can reduce the slip and block when realizing sealed.

The valve cover 3 is provided with a plurality of exhaust holes, the exhaust holes can be inserted into the plugs 32 to realize sealing, when in actual use, air in the inner cavity of the valve body is balanced through the exhaust holes, poor coating of slurry due to air bubbles is prevented, and then the plugs are used for plugging to realize sealing.

The valve body is characterized in that the valve body cavity is internally provided with the valve sleeve 2, the valve sleeve 2 is provided with a plurality of discharge holes 21, and the discharge holes 21 can transport materials conveyed by the feed inlet 12 to the discharge outlet 11, so that the minimum flow area can be ensured when the system is at the lowest pressure. The upper end of the valve sleeve 2 is provided with a positioning boss, the positioning boss is provided with a star-shaped sealing ring 24, the star-shaped sealing ring 24 can ensure the tightness between the valve cover 3 and the valve sleeve 2, the lower end of the valve sleeve 2 is provided with an O-shaped sealing ring 22, and the O-shaped sealing ring 22 can realize the sealing between the valve sleeve 2 and the valve body 1.

The valve sleeve 2 is internally provided with a valve core 6, a gap is arranged between the valve core 6 and the valve sleeve 2, the periphery of the valve core 6 is sleeved with a sealing ring 23 to realize sliding sealing between the valve core 6 and the valve sleeve 2, the valve core 6 is provided with a plurality of balance holes 62 penetrating through the valve core 6, the balance holes 62 are used for allowing fluid to pass through, and one end of the valve rod 42 is inserted into the inner cavity and fixedly connected with the valve core 6.

The valve rod 42 is connected with the valve core 6 through a valve rod pressing sleeve 61. The valve sleeve 2 is arranged in a range of 10 mm-27 mm away from the bottom of the valve cover 3, the valve core 6 can float up and down during operation, and once the system exceeds the designed maximum working pressure due to the conditions of blocking pressure and the like, the valve core is in a failure state.

The top of the sleeve 4 is provided with an adjusting nut 5, and the adjusting nut 5 is used for adjusting the initial sealing force when the valve core 6 is reset and is convenient to operate when the replacement spring 41 is installed. The sleeve 4 with the open-top 13 passes through valve gap 3 sealing connection, and when the installation, valve gap 3 and valve body 1 can accurate location be connected, are equipped with sealing ring 31 in the valve gap 3, further consolidate sealed effect, reserve the clearance between valve rod 42 and valve gap 3 and the sealing ring 31, can reduce the slip and block when realizing sealedly.

The utility model also provides a coating device which comprises the balance valve, wherein the balance valve is arranged on a feeding pipeline of a coating die head.

When the balance valve is applied to coating equipment, the feed inlet 12 and the discharge outlet 11 can be connected with other parts in the coating valve by adopting a quick-assembly hoop and a PTFE sealing gasket, and the floating range of the valve core 6 is 4mm in the vertical direction during normal coating. Main structural parameters of the balancing valve: valve core gravity, spring type, balance cavity back pressure, balance hole number and size, sealing washer and pore wall frictional force. The pressure and spring force of the feed inlet of the balance valve and the back pressure of the balance cavity can realize dynamic balance. The gravity of the valve core and the friction force between the sealing ring and the wall of the hole are structural inherent parameters, and the number and the size of the balance holes are used for determining the rationality of the design of the balance holes through the calculation of the response time of the balance valve.

While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications or substitutions are included in the scope of the present utility model as defined in the appended claims.

Claims

1. The utility model provides a balanced valve, its characterized in that, includes the valve body, the valve body is equipped with the valve body inner chamber, the valve body is including locating the feed inlet of valve body bottom end, locating the discharge gate and the open top of valve body side, feed inlet, discharge gate and open top all with valve body inner chamber intercommunication, open top end sealing connection has the sleeve, telescopic inside is equipped with the valve rod, be equipped with the spring between valve rod and the sleeve, telescopic top is equipped with adjusting nut, be equipped with the valve pocket in the valve body inner chamber, be equipped with the case in the valve pocket, the case is equipped with a plurality of and link up the balance hole of case, the balance hole intercommunication is cut apart by the case two part valve body inner chamber, the one end of valve rod inserts in the valve body inner chamber and with case fixed connection.

2. The balance valve of claim 1, wherein a gap is provided between the valve core and the valve sleeve, and a sealing ring is sleeved on the periphery of the valve core to realize sliding sealing with the valve sleeve.

3. The balanced valve of claim 1, wherein the valve stem is coupled to the valve spool by a valve stem press fit.

4. The balance valve of claim 1 wherein said sleeve is sealingly connected to said top opening by a valve cap, and wherein said valve stem is in clearance with said valve cap to provide sealing while minimizing slip drag.

5. The balance valve of claim 4, wherein the valve cover is provided with a plurality of vent holes, and the vent holes can be plugged to seal.

6. The balance valve of claim 1 wherein the end of the spring is provided with a spring collar, the spring collar being fixedly connected to the valve stem such that the valve stem moves in unison with the spring.

7. The balance valve of claim 1, wherein the valve housing is provided with a plurality of discharge openings for transporting material from the inlet to the outlet.

8. The balance valve of claim 1 wherein the upper and lower ends of the valve housing are provided with star-shaped and O-shaped seals, respectively.

9. The balance valve of claim 8 wherein the upper end of the valve housing is provided with a positioning boss and the star seal is disposed on the positioning boss.

10. Coating apparatus comprising a balancing valve according to any one of claims 1 to 9, which balancing valve is arranged on the feed line of a coating die.