CN218407958U

CN218407958U - Multi-nozzle steam jet type hot-pressing pump with built-in silencer

Info

Publication number: CN218407958U
Application number: CN202222676736.3U
Authority: CN
Inventors: 陈岳巍; 谢熙卓
Original assignee: Heilongjiang Labor Technology Co ltd
Current assignee: Heilongjiang Labor Technology Co ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-01-31
Anticipated expiration: 2032-10-11

Abstract

A multi-nozzle steam jet type hot-pressing pump with a built-in silencer belongs to the technical field of hot-pressing pumps. The utility model discloses the one end of shrink tube is linked together with steam chamber inner panel fixed connection and with the steam chamber, the other end of shrink tube is linked together with the one end of choke, the other end of choke is linked together with the one end of expansion pipe, the shrink tube is greater than the toper pipe of steam-out end diameter for the diameter of steam-in end, the diameter that the expansion pipe is steam-in end is less than the toper pipe of steam-out end diameter, the diameter that the shrink tube goes out the steam-out end is the same with the diameter of expansion pipe steam-out end, the one end outside of shrink tube minor diameter is equipped with sleeve one, the outside of choke is equipped with sleeve two, the one end outside of expansion pipe minor diameter is equipped with sleeve three, sleeve one's outer end is fixed with end cap one, sleeve three's outer end is fixed with end cap two, the shrink tube, the choke, the expansion pipe, sleeve one, sleeve two and sleeve three are the concentric circles setting, on the shrink tube of sleeve one inside, penetrating round hole has all been opened on the choke and on the expansion pipe of sleeve three inside.

Description

Multi-nozzle steam jet type hot-pressing pump with built-in silencer

Technical Field

The utility model relates to a multiinjector steam injection formula hot press pump of built-in muffler in area belongs to hot press pump technical field.

Background

The hot-pressing pump is mainly used for devices of evaporation, crystallization, rectification and the like in the industries of food, additives, medicine and chemical industry.

The existing hot-pressing pump is a single nozzle, and generally needs to be processed on a machine tool by round steel because the required dimensional accuracy is higher. For a large nozzle, the problems of high processing difficulty, rapid increase of cost, high updating cost and high labor intensity during maintenance and replacement exist.

When the existing hot-pressing pump is used, the hot-pressing pump uses high-pressure injection steam to form vacuum through a Laval nozzle. The working process of the steam in the nozzle is that the speed of the steam reaches the speed of sound from subsonic speed, and the speed of the steam is supersonic when the steam is finally sprayed. The noise created by the high velocity gas flow can be over 100 dB. Therefore, it is an urgent problem to solve the noise of the heat pressure pump and improve the operation environment of the factory.

Disclosure of Invention

The utility model aims at solving the problems existing in the prior art and further providing a multi-nozzle steam jet type hot-pressing pump with a built-in silencer.

The utility model aims at realizing through the following technical scheme:

a multi-nozzle steam jet type hot-pressing pump with a built-in silencer comprises a heat insulation and sound insulation layer, an outer wrapping, an expansion pipe, a steam chamber inner plate, a ring plate I, a nozzle assembly, a connecting cylinder, a steam chamber cylinder plate, a ring plate II, a steam chamber outer plate, a bolt, a sealing ring, a contraction pipe, a reinforcement ring I, a reinforcement ring II, a throat pipe, a flat steel ring, a plug I, a plug II, a sleeve I, a sleeve II and a sleeve III, wherein one end of the steam chamber cylinder plate is fixedly connected with the steam chamber inner plate, the other end of the steam chamber cylinder plate is fixedly connected with the steam chamber outer plate, the space surrounded by the steam chamber inner plate, the steam chamber cylinder plate and the steam chamber outer plate is a steam chamber, the connecting cylinder is communicated with the steam chamber, a flange of the nozzle assembly is fixed on the steam chamber outer plate through the bolt, the sealing ring is arranged between the flange of the nozzle assembly and the steam chamber outer plate, the ring plate I is fixed on the steam chamber inner plate, the ring plate II is fixed on the steam chamber outer plate, one end of the contraction pipe is fixedly connected with the steam chamber inner plate and communicated with the steam chamber, the other end of the contraction pipe is communicated with one end of the throat pipe, the other end of the throat pipe is communicated with one end of the expansion pipe, the contraction pipe is a conical pipe with the diameter of the steam inlet end larger than that of the steam outlet end, the expansion pipe is a conical pipe with the diameter of the steam inlet end smaller than that of the steam outlet end, the diameter of the steam outlet end of the contraction pipe is the same as that of the steam outlet end of the expansion pipe, a first sleeve pipe is arranged outside one small-diameter end of the contraction pipe, a second sleeve pipe is arranged outside the throat pipe, a third sleeve pipe is arranged outside one small-diameter end of the expansion pipe, a first plug is fixed at the outer end of the first sleeve pipe, a second plug is fixed at the outer end of the third sleeve pipe, the contraction pipe, the throat pipe, the expansion pipe, the first sleeve pipe, the second sleeve pipe and the third sleeve pipe are all arranged in concentric circles, through round holes are formed in the contraction pipe inside the first sleeve pipe and the expansion pipe inside the third sleeve pipe, a first reinforcing ring is fixed outside the first sleeve pipe, the external fixation of sleeve pipe two has reinforcing ring two, and the outside of sleeve pipe three and the outside of expansion pipe all are fixed with flat steel ring, ring plate one, ring plate two, reinforcing ring one, reinforcing ring two is the same with the external diameter homogeneous phase of flat steel ring, between ring plate two and the ring plate one, between ring plate one and the reinforcing ring one, between reinforcing ring one and the reinforcing ring two, between reinforcing ring two and the flat steel ring, all be equipped with the heat preservation puigging between flat steel ring and the flat steel ring, the outside cladding of heat preservation puigging has outer skin.

The utility model discloses a built-in muffler's multinozzle steam injection formula heat press pump adopts multinozzle structural design after, and the nozzle is small, and material saving makes the degree of difficulty low, and general material and processing equipment can satisfy the requirement, and is with low costs, and it is convenient to overhaul, changes nozzle low in labor strength, and suitable adjustment range is big. After the silencer, the low-flow-rate diffusion taper pipe and the heat-preservation sound-insulation layer are arranged in the heat-pressing pump, the heat-pressing pump has an obvious noise elimination effect, and therefore the noise problem of the heat-pressing pump is well solved. At present, the noise is matched with manufacturers of a plurality of evaporators and crystallizers in society, and through field actual measurement, the noise is 75-85 dB, which is greatly lower than the noise value of similar equipment at home and abroad.

Drawings

Fig. 1 is a schematic view of the overall structure of a multi-nozzle steam jet type heat pressure pump with a built-in silencer according to the present invention.

FIG. 2 is a schematic view showing the connection structure of the expanding tube, the throat tube and the contracting tube.

In the figure, reference numerals, 1 is a heat-insulating and sound-insulating layer, 2 is an outer sheath (shell), 3 is an expansion pipe, 4 is a steam chamber inner plate, 5 is a ring plate I, 6 is a nozzle assembly, 7 is a receiving cylinder, 8 is a steam chamber barrel plate, 9 is a ring plate II, 10 is a steam chamber outer plate, 11 is a bolt, 12 is a sealing ring, 13 is a contraction pipe, 14 is a reinforcing ring I, 15 is a reinforcing ring II, 16 is a throat pipe, 17 is a steel ring, 18 is a plug flat I, 19 is a plug II, 20 is a sleeve I, 21 is a sleeve II, 22 is a sleeve III, 23 is a steam chamber, and 24 is a circular hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation is given, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1 and 2, the multi-nozzle steam jet type heat pressure pump with a built-in silencer of the present embodiment is composed of a heat insulation and sound insulation layer 1, an outer wrapper 2, an expansion pipe 3, a steam chamber inner plate 4, a ring plate I5, a nozzle assembly 6, a connecting cylinder 7, a steam chamber tube plate 8, a ring plate II 9, a steam chamber outer plate 10, a bolt 11, a sealing ring 12, a contraction pipe 13, a reinforcement ring I14, a reinforcement ring II 15, a throat pipe 16, a flat steel ring 17, a plug I18, a plug II 19, a sleeve I20, a sleeve II 21 and a sleeve III 22, wherein one end of the steam chamber tube plate 8 is fixedly connected with the steam chamber inner plate 4, the other end of the steam chamber tube plate 8 is fixedly connected with the steam chamber outer plate 10, a space surrounded by the steam chamber inner plate 23, the connecting cylinder 7 is communicated with the steam chamber 23, a flange of the nozzle assembly 6 is fixed on the steam chamber outer plate 10 by the bolt 11, a sealing ring 12 is arranged between a flange of the nozzle assembly 6 and a steam chamber outer plate 10, a first annular plate 5 is fixed on the steam chamber inner plate 4, a second annular plate 9 is fixed on the steam chamber outer plate 10, one end of a contraction pipe 13 is fixedly connected with the steam chamber inner plate 4 and communicated with a steam chamber 23, the other end of the contraction pipe 13 is communicated with one end of a throat pipe 16, the other end of the throat pipe 16 is communicated with one end of an expansion pipe 3, the contraction pipe 13 is a conical pipe with the steam inlet end having a diameter larger than that of the steam outlet end, the expansion pipe 3 is a conical pipe with the steam inlet end having a diameter smaller than that of the steam outlet end, the diameter of the steam outlet end of the contraction pipe 13 is the same as that of the steam end of the expansion pipe 3, a first sleeve 20 is arranged outside the small-diameter end of the contraction pipe 13, a second sleeve 21 is arranged outside the throat pipe 16, a third sleeve 22 is arranged outside the small-diameter end of the expansion pipe 3, the first sleeve 18 is fixed on the first sleeve 20, and the second sleeve 19 is fixed on the third sleeve 22, the heat-insulation sound-insulation sleeve comprises a contraction pipe 13, a throat pipe 16, an expansion pipe 3, a first sleeve pipe 20, a second sleeve pipe 21 and a third sleeve pipe 22 which are all arranged in a concentric circle, through round holes 24 are formed in the contraction pipe 13 inside the first sleeve pipe 20, a first reinforcing ring 14 is fixed outside the first sleeve pipe 20, a second reinforcing ring 15 is fixed outside the second sleeve pipe 21, steel rings 17 are fixed outside the third sleeve pipe 22 and outside the expansion pipe 3, a first ring plate 5, a second ring plate 9, a first reinforcing ring 14, a second reinforcing ring 15 and a flat steel ring 17 are identical in outer diameter, heat-insulation sound-insulation layers 1 are arranged between the second ring plate 9 and the first ring plate 5, between the first ring plate 5 and the first reinforcing ring 14, between the first reinforcing ring 14 and the second reinforcing ring 15, between the second reinforcing ring 15 and the flat steel ring 17, and between the flat steel ring 17 and the flat steel ring 17, and outer wrapping sound-insulation skin 2 is wrapped outside the heat-insulation layers 1.

The fixing or fixing connection in this embodiment may be welding, bolting or bonding.

The design of the multi-nozzle structure of the embodiment:

(1) According to the jet flow principle of the air flow of the hot-pressing pump and the injection coefficient of the heat pump, the jet flow angle of the nozzle is determined to be 7-10 degrees.

(2) And determining that the nozzle assembly adopts a combination of five, seven or nine nozzles according to the flow of the working steam. The nozzles are connected by seamless steel pipes and then fixed on the flange of the nozzle assembly, and each nozzle has small volume and light weight.

The design of the built-in silencer of the embodiment is as follows:

the speed-reducing pressurizing pipe of the hot-pressing pump is formed by connecting a middle throat pipe and two contracting conical pipes. The subsonic mixed gas flow is gradually compressed through the conical pipe (contraction pipe) contracted at the front section, reaches the sonic speed after entering the throat pipe, enters the expansion conical pipe (expansion pipe) at the rear section after passing through the throat pipe and is sprayed to reach the supersonic speed, so that the noise is mainly generated at the throat pipe and two ends of the throat pipe, and the part is manufactured into the built-in silencer. The method specifically comprises the steps of drilling round holes in a throat pipe, two taper pipes and a part close to the throat pipe and the two taper pipes according to an even rule with the aperture ratio of 30%, wherein the diameter of the round hole 24 is 8mm, polishing and deburring are carried out, the hole diameter is designed according to the steam flow, and the outside is made into a silencing cavity according to the angles of the throat pipe and the taper pipes, so that a novel single-chamber expanding silencer is formed. When the silencer covers the conical pipes at two ends and has different lengths, odd components of the passing frequency n and even components of the passing frequency n can be respectively eliminated, so that the defect that sound waves of certain frequencies are periodically leaked when only the throat pipe is used for silencing is overcome. The noise reduction effect is greatly improved.

The working steam pressure of the hot-pressing pump in the embodiment is 0.6-0.7 MPa (gauge pressure); the consumption of working steam is 1600kg/h; the temperature of the suction inlet is 70-85 ℃; the temperature of the discharge port is 85-90 ℃; the air extraction coefficient is 1.1; the extraction rate was 1758kg/h.

The above description is only the preferred embodiments of the present invention, and these embodiments are all based on the present invention, and the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A multi-nozzle steam jet type hot-pressing pump with a built-in silencer is composed of a heat insulation and sound insulation layer, an outer wrapping, an expansion pipe, a steam chamber inner plate, a ring plate I, a nozzle assembly, a connecting cylinder, a steam chamber cylinder plate, a ring plate II, a steam chamber outer plate, a bolt, a sealing ring, a contraction pipe, a reinforcing ring I, a reinforcing ring II, a throat pipe, a flat steel ring, a plug I, a plug II, a sleeve I, a sleeve II and a sleeve III, wherein one end of the steam chamber cylinder plate is fixedly connected with the steam chamber inner plate, the other end of the steam chamber cylinder plate is fixedly connected with the steam chamber outer plate, the space enclosed by the steam chamber inner plate, the steam chamber cylinder plate and the steam chamber outer plate is a steam chamber, the connecting cylinder is communicated with the steam chamber, the flange of the nozzle assembly is fixed on the steam chamber outer plate through the bolt, the sealing ring is arranged between the flange of the nozzle assembly and the steam chamber outer plate, the ring plate I is fixed on the steam chamber inner plate, the ring plate II is fixed on the steam chamber outer plate, one end of a contraction pipe is fixedly connected with an inner plate of the steam chamber and is communicated with the steam chamber, the other end of the contraction pipe is communicated with one end of a throat pipe, the other end of the throat pipe is communicated with one end of an expansion pipe, the contraction pipe is a conical pipe with the steam inlet end larger than the steam outlet end, the expansion pipe is a conical pipe with the steam inlet end smaller than the steam outlet end, the diameter of the steam outlet end of the contraction pipe is the same as that of the steam outlet end of the expansion pipe, a first sleeve pipe is arranged outside one small-diameter end of the contraction pipe, a second sleeve pipe is arranged outside the throat pipe, a third sleeve pipe is arranged outside one small-diameter end of the expansion pipe, a first plug is fixed at the outer end of the first sleeve pipe, a second plug is fixed at the outer end of the third sleeve pipe, the contraction pipe, the throat pipe, the expansion pipe, the first sleeve pipe, the second sleeve pipe and the third sleeve pipe are all arranged in concentric circles, through round holes are formed in the contraction pipe inside the first sleeve pipe, a first round hole is formed in the contraction pipe and the expansion pipe inside the third sleeve pipe, a first reinforcing ring is fixed outside the first sleeve pipe, the external fixation of sleeve pipe two has the reinforcing ring two, and the outside of sleeve pipe three and the outside of expansion pipe all are fixed with flat steel ring, and the crown plate one, crown plate two, reinforcing ring one, the external diameter homogeneous phase of reinforcing ring two and flat steel ring is the same, between crown plate two and the crown plate one, crown plate one and reinforcing ring one, between reinforcing ring one and the reinforcing ring two, between reinforcing ring two and the flat steel ring, all be equipped with the heat preservation puigging between flat steel ring and the flat steel ring, the outside cladding of heat preservation puigging has outer skin.

2. The multi-nozzle steam-jet thermocompression pump with built-in silencer of claim 1 is characterized by the diameter of the circular hole being 8mm.

3. The multi-nozzle steam-injection thermocompression pump with built-in silencer of claim 1 wherein the nozzle assembly uses a combination of five, seven or nine nozzles.