CN204574643U - A kind of fixation type throttle valve with silencing means - Google Patents

Abstract

The utility model discloses a kind of fixation type throttle valve with silencing means, comprise body (10) and spool (5), the two ends of described body (10) have minor diameter runner pipe (20), a filter screen device (2) and a backstop device (3) is provided with in body (10), be filled with molecular sieve (4) in body (10) between filter screen device (2) and backstop device (3), molecular sieve is provided with micro through-hole in (4); Spool (5) is provided with in the minor diameter runner pipe (20) of the backstop device (3) of body (10).It not only has the effect of throttling but also has the effect of noise reduction, its structure is simple, adopt molecular sieve excellent noise reduction effect, and adopt truncated cone-shaped sidewall clamping filter screen device and backstop device to grip, its processing is simple and convenient, and efficiency is high, can not destroy body, improve quality, improve yield rate.

Description

A fixed throttling valve with noise reduction device

Technical field:

The utility model relates to the technical field of air-conditioning noise reduction, in particular to a fixed throttle valve with a noise reduction device.

Background technique:

In the air conditioning system, in order to reduce the noise generated when the refrigerant passes through the throttle valve, it is generally necessary to install a muffler on the pipeline of the throttle valve. The structure of the existing muffler is generally formed by welding a porous plate in the shell. The sleeve can reduce noise through the noise reduction effect of the porous plate. Although it can reduce noise to a certain extent, the noise reduction frequency band of the porous plate is limited. In order to ensure a better noise reduction effect, the noise reduction in the silencer is now The casing is equipped with structures such as sound-absorbing cotton, but it reduces the gas flow space and reduces the gas flow effect, and its internal welding sleeve is troublesome to process, and the efficiency is low. Welding is easy to damage the casing, affecting the quality and reducing the pass rate .

And it is troublesome to install silencer on the pipeline of throttle valve, time-consuming and cost-consuming.

Utility model content:

The purpose of this utility model is to overcome the deficiencies of the prior art and provide a fixed throttle valve with a noise reduction device, which not only has the effect of noise reduction but also has the effect of throttling. Good, and the frustum-shaped side wall is used to clamp the filter screen device and the screen retaining device for clamping and fixing, the processing is simple and convenient, the efficiency is high, the pipe body will not be damaged, the quality is improved, and the yield rate is increased.

The scheme that the utility model solves described technical problem is:

A fixed throttle valve with a noise reduction device, including a pipe body and a valve core, the two ends of the pipe body have small-diameter flow pipes, a filter screen device and a screen retaining device are arranged in the pipe body, the filter screen device and the Molecular sieves are filled in the pipe body between the mesh retaining devices; a valve core is arranged in a small-diameter flow pipe of the mesh retaining device close to the pipe body.

A valve body is fixed in the small-diameter flow pipe close to the screen retaining device, and a valve core is fixed in the valve body.

The inlet end of the valve body is fixed with a throttle valve filter screen, and the valve core is between the throttle valve filter screen and the screen retaining device.

The two ends of the pipe body are frustum-shaped side walls, and the small-diameter end of the frustum-shaped side wall communicates with the small-diameter flow pipe.

The molecular sieve fills the cavity in the pipe body between the filter screen device and the screen retaining device, and the molecular sieve has micro through holes.

The filter screen device includes a filter screen seat and a filter screen, the filter screen is fixed on the screen screen seat, and the filter screen seat is inserted into the pipe body; the screen retaining device includes a screen screen seat and a net cover, and the screen cover is fixed on The screen seat is covered with the screen seat. The center of the screen cover is an impassable part, and the surrounding part is a flowable part. The molecular sieve is clamped between the filter screen device and the screen screen device. between the side walls.

The valve core has an axial through hole.

The outstanding effect of the present utility model is:

Compared with the existing technology, when the refrigerant enters the muffler from the throttle valve core, the inside of the muffler is filled with molecular sieves, and there are micro-through holes inside the molecular sieve, and there are also through holes between the molecular sieve particles; Dissipated into these through holes, a part of the energy is consumed when it hits the molecular sieve particles, and another part of the flow is lengthened when the fluid passes through these through holes. With a part of the energy consumed, the flow rate is reduced, and there are micro through holes inside the molecular sieve. Absorb part of the noise, and then reduce the generated noise to play a role in noise reduction. It not only has the effect of noise reduction but also has the effect of throttling. Its structure is simple, and the filter screen device and the screen device are clamped by the frustum-shaped side wall. It is clamped and fixed, the processing is simple and convenient, the efficiency is high, the pipe body will not be damaged, the quality is improved, and the yield of finished products is increased.

Description of drawings:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of another form of the utility model;

Fig. 3 is a structural schematic diagram of another form of the utility model.

Detailed ways:

The utility model is described in detail below in conjunction with the accompanying drawings and specific preferred embodiments, so that the advantages and characteristics of the utility model can be more easily understood by those skilled in the art. These embodiments are only for illustrative purposes and are not intended to The scope of the present utility model is limited.

Embodiment 1, as shown in Figure 1, a fixed throttle valve with a noise reduction device, including a pipe body 10 and a valve core 5, the two ends of the pipe body 10 have a small-diameter flow pipe 20, the pipe body 10 A filter device 2 and a retaining device 3 are provided inside, and the pipe body 10 between the filter device 2 and the retaining device 3 is filled with molecular sieves 4; the small-diameter flow pipe of the retaining device 3 near the pipe body 10 20 is provided with a spool 5.

Both ends of the tube body 10 are frustum-shaped sidewalls 12 , and the small-diameter end of the frustum-shaped sidewall 12 communicates with the small-diameter flow pipe 20 .

The molecular sieve 4 fills the cavity in the pipe body 10 between the filter screen device 2 and the screen retaining device 3 , and the molecular sieve 4 has micro through holes.

The filter screen device 2 includes a filter screen seat 21 and a filter screen 22, the filter screen 22 is fixed on the screen screen seat 21, and the filter screen seat 21 is inserted and sleeved in the pipe body 10; the screen retaining device 3 includes a screen screen seat 31 And the net cover 32, the net cover 32 is fixed on the net retaining seat 31 and covers the net retaining seat 31, the center of the net cover 32 is an impassable part, and the surrounding is a flowable part, and the molecular sieve 4 is clamped on the filter screen device 2 and the net retaining device 3 Between them, the filter screen seat 21 and the mesh screen seat 31 are clamped between the two frustum-shaped side walls 12 .

The valve core 5 has an axial through hole 51 .

Its structure is simple. Molecular sieve 4 is used. Molecular sieve 4 has micro-through holes, and its pore size is comparable to that of ordinary molecules. The refrigerant can absorb a lot of noise through molecular sieve 4, and it is clamped by frustum-shaped side wall 12. The filter screen device 2 and the screen retaining device 3 are clamped and fixed, the processing is simple and convenient, the efficiency is high, the pipe body 10 will not be damaged, the quality is improved, and the yield rate is increased.

It is provided with a valve core 5 in the pipe body 10, so that the muffler not only has the effect of sound attenuation but also the effect of throttling.

Embodiment 2, see Fig. 2 and Fig. 3, Fig. 3 is the illustration that the valve body 30 extends into the pipe body 10, the valve body 30 is fixed in the small-diameter flow pipe 20 close to the retaining net device 3, the valve body 30 A spool 5 is fixed in it.

The inlet end of the valve body 30 is fixed with a throttle filter 40 , and the valve core 5 is between the throttle filter 40 and the screen retaining device 3 . All the other are the same as embodiment 1

The above embodiments are only used to illustrate the utility model, but not to limit the utility model. Those of ordinary skill in the relevant technical fields can also make various changes and modifications without departing from the spirit and scope of the utility model. , so all equivalent technical solutions also belong to the category of the utility model, and the patent protection scope of the utility model should be defined by the claims.

Claims (7)

1. one kind has the fixation type throttle valve of silencing means, comprise body (10) and spool (5), it is characterized in that: the two ends of described body (10) have minor diameter runner pipe (20), be provided with a filter screen device (2) and a backstop device (3) in body (10), in the body (10) between filter screen device (2) and backstop device (3), be filled with molecular sieve (4); Spool (5) is provided with in the minor diameter runner pipe (20) of the backstop device (3) of body (10).

2. a kind of fixation type throttle valve with silencing means according to claim 1, it is characterized in that: be fixed with throttle valve body (30) in the minor diameter runner pipe (20) of described close backstop device (3), in valve body (30), be fixed with spool (5).

3. a kind of fixation type throttle valve with silencing means according to claim 2, it is characterized in that: the entrance point of described valve body (30) is fixed with choke valve screen pack (40), and spool (5) is between choke valve screen pack (40) and backstop device (3).

4. a kind of fixation type throttle valve with silencing means according to claim 1, it is characterized in that: the both ends of described body (10) are truncated cone-shaped sidewall (12), and the smaller diameter end of truncated cone-shaped sidewall (12) communicates with minor diameter runner pipe (20).

5. a kind of fixation type throttle valve with silencing means according to claim 1, it is characterized in that: described molecular sieve (4) fills up the cavity in the body (10) between filter screen device (2) and backstop device (3), and (4) have micro through-hole with molecular sieve.

6. a kind of fixation type throttle valve with silencing means according to claim 1, it is characterized in that: described filter screen device (2) comprises filter screen seat (21) and screen pack (22), screen pack (22) is fixed on filter screen seat (21), and filter screen seat (21) sleeve is in body (10); Described backstop device (3) comprises backstop seat (31) and guard (32), guard (32) is fixed on backstop seat (31) and goes up and cover backstop seat (31), guard (32) center is barrier section, surrounding is negotiable part, molecular sieve (4) is clamped between filter screen device (2) and backstop device (3), and filter screen seat (21) and backstop seat (31) are clamped between two truncated cone-shaped sidewalls (12).

7. a kind of fixation type throttle valve with silencing means according to claim 1, is characterized in that: described spool (5) has axially extending bore (51).