CN210153312U

CN210153312U - Valve casing valve rod seat connection structure

Info

Publication number: CN210153312U
Application number: CN201920856003.3U
Authority: CN
Inventors: 解柏; 王春才; 闫婷婷
Original assignee: Suzhou Zhongjie Automobile Parts Co ltd
Current assignee: Suzhou Zhongjie Automobile Parts Co ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-03-17
Anticipated expiration: 2029-06-06

Abstract

The utility model belongs to the technical field of the valve casing technique and specifically relates to a valve casing valve rod seat connection structure, including first annular slab, the coaxial fixed connection of first annular slab is on the outer wall of valve gap, the valve gap can be connected on the disk seat, coaxial connection has the valve rod seat on the disk seat, and the top of valve rod seat extends to in the valve gap, first annular slab is close one of disk seat and serves the first body of coaxial fixedly connected with, the top of disk seat is coaxial to be equipped with the constant head tank, fixedly connected with second screw thread on the inner wall of constant head tank, and the valve gap is close the first screw thread of fixedly connected with on the outer wall of constant head tank one end, the disk seat is close coaxial fixedly connected with second annular slab on the one end outer wall of valve gap, the coaxial fixedly connected with second body in top of second annular slab, first. The utility model discloses not only improved the efficiency of installation dismantlement, and then improved user's work efficiency, simple structure easily operates, wholly obtains the practicality and has obtained very big improvement.

Description

Valve casing valve rod seat connection structure

Technical Field

The utility model relates to a valve casing technical field especially relates to a valve casing valve rod seat connection structure.

Background

The conventional electronic expansion valve is a throttle valve and is used for changing the flow of a refrigerating medium in a refrigerating system, and the common electronic expansion valve comprises a valve body, a coil mechanism externally sleeved on the valve body, a medium input pipe and a medium output pipe which are connected to the side wall and the front end of the valve body, wherein a valve body shell is formed by butting a valve seat and a rear seat sleeve, the coil mechanism is externally sleeved on the rear seat sleeve, a valve hole is formed in the front end of the valve seat, and the valve hole is plugged or opened by a valve rod which moves axially to realize the opening and closing. The existing electronic expansion valve has poor sealing performance in the processes of opening and closing the valve, and is very easy to generate larger noise. To this end, we propose a valve housing stem seat attachment structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a valve casing valve rod seat connecting structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a valve casing valve rod seat connecting structure is designed, and comprises a first annular plate, wherein the first annular plate is coaxially and fixedly connected to the outer wall of a valve cover, the valve cover can be connected to a valve seat, the valve seat is coaxially connected with a valve rod seat, the top of the valve rod seat extends into the valve cover, one end, close to the valve seat, of the first annular plate is coaxially and fixedly connected with a first pipe body, the outer diameter of the first pipe body is equal to the outer diameter of the first annular plate, the inner diameter of the first pipe body is larger than the inner diameter of the first annular plate, a positioning groove is coaxially arranged at the top of the valve seat, a second thread is fixedly connected to the inner wall of the positioning groove, the inner diameter of the positioning groove is equal to the inner diameter of the valve cover, the outer diameter of the positioning groove is equal to the outer diameter of the valve cover, a first thread is fixedly connected to the outer wall, close to one end of, the valve seat is close to coaxial fixedly connected with second annular plate on the one end outer wall of valve gap, the coaxial fixedly connected with second body in top of second annular plate, the internal diameter of second body equals the external diameter of first body, first body extensible to between second body and the valve seat.

Preferably, the end of the first pipe body close to the valve seat is coaxially and fixedly connected with a limiting strip, one side of the second annular plate close to the valve cover is coaxially provided with an annular groove, and the limiting strip can be correspondingly connected in the annular groove.

Preferably, an annular rubber pad is coaxially and fixedly connected in the annular groove, and the bottom of the limiting strip is abutted to the annular rubber pad.

Preferably, the depth of the second tube is equal to the depth of the first tube.

The utility model provides a valve casing valve rod seat connection structure, beneficial effect lies in: the utility model discloses the cooperation between the first body that sets up and the second body is connected, has improved the holistic stability of device, and under ring channel and spacing joint action, further improvement the leakproofness of device, threaded connection's mode is installed, has not only improved the efficiency of installation dismantlement, and then has improved user's work efficiency, and simple structure easily operates, wholly obtains the practicality and has obtained very big improvement, specifically:

(1) the device is when using, with the coaxial one end of placing at the valve rod seat of valve gap, the first body of setting in valve gap one end can correspond and extend to between second body and the disk seat outer wall, the connection that matches is carried out to the second screw thread in first screw thread on the valve gap outer wall and the constant head tank simultaneously, and in the bottom of spacing strip extended to the ring channel, not only improved device monolithic connectivity's firmness, and simple to operate, the leakproofness is good, moreover, the steam generator is simple in structure, and manufacturing cost is reduced.

(2) And the annular groove and the limiting strip are connected in a matching manner, so that the sealing performance of the device is further improved.

(3) The annular rubber pad also plays a role in sealing.

(4) The arrangement at the same depth is also beneficial to improving the tightness of the device.

Drawings

Fig. 1 is a schematic structural diagram of a valve stem seat connecting structure of the present invention.

Fig. 2 is a partial enlarged view of a valve stem seat connecting structure of the present invention.

Fig. 3 is a partial enlarged view of B of the valve stem seat connecting structure of the present invention.

In the figure: first screw thread 1, spacing strip 2, valve gap 3, first annular plate 4, first body 5, valve rod seat 6, second body 7, second annular plate 8, disk seat 9, ring channel 10, second screw thread 11, constant head tank 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a valve casing valve stem seat connection structure, including first annular plate 4, a serial communication port, first annular plate 4 coaxial fixed connection is on valve gap 3's outer wall, valve gap 3 can be connected on valve seat 9, coaxial connection has valve stem seat 6 on the valve seat 9, and the top of valve stem seat 6 extends to in the valve gap 3, first annular plate 4 is close to one of valve seat 9 and serves one first body 5 of coaxial fixed connection, the external diameter of first body 5 equals the external diameter of first annular plate 4, and the internal diameter of first body 5 is greater than the internal diameter of first annular plate 4, cooperation between first body 5 and the first annular plate 4 is connected, make and form the space of placing between the inner wall of first body 5 and the outer wall of valve gap 3, be favorable to the quick installation of second body 7 to between first body 5 and valve gap 3, and then improved holistic leakproofness.

The coaxial constant head tank 12 that is equipped with in top of disk seat 9, fixedly connected with second screw thread 11 on the inner wall of constant head tank 12, the internal diameter of constant head tank 12 equals the internal diameter of valve gap 3, and the external diameter of constant head tank 12 equals the external diameter of valve gap 3, and valve gap 3 is close the first screw thread 1 of fixedly connected with on the outer wall of constant head tank 12 one end, but first screw thread 1 and second screw thread 11 accordant connection, threaded connection's setting, the stability of valve gap 3 at the installation of disk seat 9 top has not only been improved, threaded setting has still made things convenient for installation and dismantlement between valve gap 3 and the disk seat 9, very big facility has been brought for the.

The coaxial fixedly connected with second annular plate 8 on the one end outer wall that disk seat 9 is close to valve gap 3, the coaxial fixedly connected with second body 7 in top of second annular plate 8, the internal diameter of second body 7 equals the external diameter of first body 5, first body 5 extensible to between second body 7 and the disk seat 9, cooperation between second body 7 and the first body 5 is connected, the leakproofness of installing the monolithic connection has been improved, moreover, the steam generator is simple in structure and convenient to install, and meanwhile, the manufacturing cost is lowered.

The utility model discloses the cooperation between the first body 5 that sets up and the second body 7 is connected, has improved the holistic stability of device, and under ring channel 10 and spacing 2's linkage effect, further improvement the leakproofness of device, threaded connection's mode is installed, has not only improved the efficiency of installation dismantlement, and then has improved user's work efficiency, and simple structure easily operates, wholly obtains the practicality and has obtained very big improvement.

Specifically, the device is when using, with the coaxial one end of placing at valve rod seat 6 of valve gap 3, the first body 5 that sets up in valve gap 3 one end can correspond and extend to between second body 7 and the 9 outer walls of disk seat, the connection that matches is carried out to first screw thread 1 on the valve gap 3 outer wall and second screw thread 11 in the constant head tank 12 simultaneously, and the bottom of spacing strip 2 extends to in the ring channel 10, the firmness of device monolithic connection has not only been improved, and simple to operate, the leakproofness is good, moreover, the steam generator is simple in structure, and the manufacturing cost is reduced.

Referring to fig. 1, further, a limiting strip 2 is coaxially and fixedly connected to one end of the first pipe 5 close to the valve seat 9, an annular groove 10 is coaxially arranged on one side of the second annular plate 8 close to the valve cover 3, and the limiting strip 2 can be correspondingly connected in the annular groove 10.

The matching connection between the annular groove 10 and the limiting strip 2 further improves the sealing performance of the device.

Referring to fig. 1, further, an annular rubber pad is coaxially and fixedly connected in the annular groove 10, and the bottom of the limiting strip 2 abuts against the annular rubber pad.

The annular rubber pad plays a role in sealing.

Referring to fig. 1, 2 and 3, the second tube 7 has a depth equal to the depth of the first tube 5.

The same depth arrangement also contributes to improved sealing of the device.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a valve casing valve rod seat connection structure, includes first annular slab (4), its characterized in that, the coaxial fixed connection of first annular slab (4) is on the outer wall of valve gap (3), valve gap (3) can be connected on disk seat (9), coaxial connection has valve rod seat (6) on disk seat (9), just the top of valve rod seat (6) extends to in valve gap (3), first annular slab (4) is close one of disk seat (9) and serves coaxial fixedly connected with first body (5), the external diameter of first body (5) equals the external diameter of first annular slab (4), and the internal diameter of first body (5) is greater than the internal diameter of first annular slab (4), the top of disk seat (9) is coaxial to be equipped with constant head tank (12), fixedly connected with second screw thread (11) on the inner wall of constant head tank (12), the internal diameter of constant head tank (12) equals the internal diameter of valve gap (3), just the external diameter of constant head tank (12) equals the external diameter of valve gap (3), just valve gap (3) is close fixedly connected with first screw thread (1) on the outer wall of constant head tank (12) one end, but first screw thread (1) and second screw thread (11) accordant connection, coaxial fixedly connected with second annular plate (8) on valve seat (9) is close the one end outer wall of valve gap (3), the coaxial fixedly connected with second body (7) in top of second annular plate (8), the internal diameter of second body (7) equals the external diameter of first body (5), first body (5) extensible is to between second body (7) and valve seat (9).

2. A valve housing valve stem seat connecting structure as claimed in claim 1, wherein a stop strip (2) is coaxially and fixedly connected to one end of the first tube (5) close to the valve seat (9), an annular groove (10) is coaxially formed on one side of the second annular plate (8) close to the valve cover (3), and the stop strip (2) is correspondingly connected in the annular groove (10).

3. A valve housing stem seat connecting structure according to claim 2, wherein an annular rubber gasket is coaxially and fixedly connected in the annular groove (10), and the bottom of the limiting strip (2) abuts against the annular rubber gasket.

4. A valve housing stem seat attachment according to claim 1, wherein the depth of the second tube (7) is equal to the depth of the first tube (5).