JPH058251U - Scraped heat exchanger - Google Patents

Abstract

(57) [Summary] [Purpose] The difference in thermal expansion (expansion / contraction difference) between the inner cylinder and the outer cylinder is absorbed by the change in the crush amount of the gasket, and the product is affected by the change in the crush amount of the gasket. (EN) Provided is a scraping-type heat exchanger in which a liquid pool is not formed in a flow path. A medium is formed in a space formed between the outer surface of the inner cylinder and the inner surface of the outer cylinder and sealing the inner surface of both ends of the outer cylinder and the outer surface of both ends of the inner cylinder with packing. A product that moves and moves in the inner cylinder is subjected to heat exchange treatment, and the inlet end and outlet end of the product whose inner diameter is the same as the inner diameter of the inner cylinder are connected. The end cap is connected with a flange pipe joint and a gasket having a special cross-sectional shape.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention is a flange pipe for connecting an end cover for connecting an inlet / outlet pipe to an inner cylinder and an outer cylinder. The present invention relates to a scrape-type heat exchanger with an improved joint portion.

[0002]

[Prior art]

  The difference in thermal expansion (expansion difference) due to the temperature difference between the medium and the product that occurs between the inner and outer cylinders In order to absorb, a packing is attached to the inner peripheral surface of one end of the outer cylinder, which is in close contact with the outer peripheral surface of the inner cylinder. The digits are well known.   By the way, with this packing, the packing goes along the outer peripheral surface of the inner cylinder. Since it moves (slides) in the axial direction to absorb the difference in expansion and contraction, There was a risk that the packing could leak due to wear in a relatively short period of use. Therefore, the user frequently changes the packing in anticipation of the period.   It is inconvenient to frequently change the packing in this way.

[0003]

[Problems to be solved by the device]

  The inventor of the present application is the main reason why the packing needs to be changed frequently. For wear when the packing moves (slides) in the axial direction along the outer peripheral surface of the inner cylinder. So that the expansion difference is absorbed by the change in the crush amount of the gasket. It was found that it is effective to provide the present invention.

[0004]   Also, simply absorb the difference in expansion and contraction by changing the crush amount of the gasket. In the configuration, the inner peripheral edge of the gasket is The liquid pool can be formed by projecting into the product flow path or forming a recess in the flow path wall. There are things that I make and I feel sick.

[0005]   The present invention absorbs the thermal expansion difference (expansion / contraction difference) between the inner cylinder and the outer cylinder by changing the crush amount of the gasket. Liquid in the product flow path depending on the change in the crush amount of the gasket. Providing a new scrape-type heat exchanger that prevents the formation of pools The purpose is to do.

[0006]

[Means for Solving the Problems]

  In order to achieve the above object, the scraping-type heat exchanger according to the present invention has an outer surface of an inner cylinder. Between the inner surface of the outer cylinder and the inner surface of both ends of the outer cylinder and the outer surface of both ends of the inner cylinder. The medium moves in the space formed by sealing the Heat-exchange treatment is applied to the moving product, and the inner diameter of the product at the inlet and outlet ends Is the end pipe connecting the inlet pipe and the end pipe connecting the outlet pipe with the same diameter as the inner diameter of the inner cylinder. It has the following requirements in a hand-connected form.                                   Record   Insert the flange of the flange pipe joint into the inlet end of the outer cylinder and the inlet end facing the inlet end. It is provided at the peripheral edge of the opening of the mouth pipe connecting end lid, and not at the end of the inner cylinder.   The pressure contact surface of the flange provided on the inlet side end of the outer cylinder and the opening peripheral edge of the end cover for connecting the inlet pipe Cutting the inner peripheral edge in L shape, and providing the end of the inner cylinder with the flange of the outer cylinder. It should be in a state of protruding inside the L-shaped cutout part, and the end face of the protruding end should be By setting the inclined surface closer to the passing side and lower near the outer cylinder, the gasket Forming a groove.   Gasket gaskets whose cross-sectional shape differs from that of the gasket groove in the following points Fit in the groove.   Insert into the L-shaped cutout part provided on the flange of the inlet pipe connecting end cover in the gasket Cut the outer corner of the part to be cut diagonally.

[0007]

【Example】

  Figure 1 shows the entire cross section without the rotary shaft with scraping scraper. The figure is as follows. That is, the left side flange 2 is provided on the outside of both ends of the inner cylinder 1. And the right side flange 3 are fitted so as to be slidable and removable in the axial direction, and these left and right side flanges 2, Airtightness is secured by putting packings 4 and 5 on the contact surface of the inner cylinder 1 with the inner cylinder 1. this Hollow wall consisting of inner and outer double walls 6, 7 between the left and right collars 2, 3 on the outer circumference of the inner cylinder 1. The sleeve 8 configured by is fitted, and the left and right end surfaces of the sleeve 8 are attached to both the left and right collars 2. This sleeve is brought into contact with the inner surface of 3 and fixed with fixing screws 9 and 10. 8 is provided with an inward projecting edge 11 on the right end, and the peripheral surface of the inner cylinder 1 is provided on the top surface of the projecting edge 11. The packing 12 which is pressed against the inside is inserted to ensure airtightness, and the inner periphery of the left end of the sleeve 8 is A projecting annular portion 13 facing the surface is provided on the left collar 2 so as to project outside the projecting annular portion 13. The packing 14 which presses against the inner peripheral surface of the left end of the sleeve 8 is put on the peripheral surface to ensure airtightness. The outer cylinder 15 is formed on the outer side of the inner cylinder 1 by holding the outer cylinder 15.

[0008]   An inlet pipe connecting end cover 21 is arranged outside the right end of the inner cylinder 1, and the inlet pipe connecting end cover 2 is provided. The flanges 22 and 23 for pipe joints are provided on the periphery of the opening of 1 and the above-mentioned right collar 3, and By tightening the joint flanges 22, 23 with the clamp 24, the right end of the inner cylinder 1 An inlet pipe connecting end lid 21 is detachably attached to the outer end of the inner cylinder 1 on the outer side thereof. The outlet pipe connecting end lid 25 is arranged, and the opening peripheral edge of the outlet pipe connecting end lid 25 and the left side The flanges 26 and 27 for pipe joints are provided on the flange 2 and the flanges 26 and 2 for pipe joints are provided. 7 is tightened with a clamp 28 to connect the outlet pipe connecting end cover 25 to the left end of the inner cylinder 1. Is detachably attached.

[0009]   Of the flanges 23 and 22 provided on the peripheral edge of the opening of the right flange 3 and the inlet pipe connecting end lid 21. The inner peripheral edge of the press contact surface is cut into an L shape, and the end of the inner cylinder 1 is cut into the flange of the right collar 3. To make the L-shaped cutout portion 29 provided on the lunge 23 project inside the L-shaped cutout portion 29, and The inclination of the end surface of the projecting end 30 is higher near the side through which the product passes and is lower near the outer cylinder 15. By forming the surface 31, the gasket groove 32 is formed and the left side flange 2 and the protrusion are formed. Inside of the pressure contact surfaces of the flanges 28, 27 provided on the peripheral edge of the opening of the mouth pipe connecting end lid 25. The peripheral edge is cut into an L shape, and the end of the inner cylinder 1 is provided on the flange 28 of the left collar 2. And the end of the projecting end 34. By setting the inclined surface 35 closer to the side through which the product passes and lower closer to the outer cylinder, Thus, the gasket groove 36 is formed.

[0010]   L-shaped cutout portion 3 provided on the flanges 22 and 26 of the inlet and outlet pipe connecting end covers 21 and 25. 7 and 38 are different in that the outer corners of the parts to be fitted are cut obliquely 39. A pair of left and right gaskets 41, 42 having the cross-sectional shapes of the sprocket grooves 32, 36 are configured. The gaskets 41 and 42 are fitted in the gasket grooves 32 and 36. is there.

[0011]   In the figure, 44 and 45 are axes of a rotary shaft (not shown) having a scraping scraper. A receiving hole, 46 is a stay, 47 is a product inlet, 48 is a product outlet, and 49 is a medium inlet. , 50 indicates an outlet of the medium, and 51 indicates a key.

[0012]   In forming the outer cylinder 15, the left and right collars 2 and 3 and the sleeve 8 are divided into This is because it is possible to inexpensively manufacture the inner cylinder portion that needs replacement.

[0013]

[Action]

  When the inner cylinder thermally expands, the gasket is crushed as shown in FIGS. 3 and 4, but The crushed portion escapes into the cutouts 37, 38 and protrudes toward the flow path of the product. , Does not form a recess on the wall of the flow path and does not form a liquid pool.

[0014]

[Effect of device]

  The scraping-type heat exchanger according to the present invention absorbs thermal expansion as described above. Since the structure absorbs when the amount of crushing of the ket is changed, wear and fatigue are reduced, and It does not require frequent replacement as in the conventional case, and changes in gaskets In some cases, the deformed portion of the gasket protruded into the product flow path or created a recess. There is no danger of liquid puddle and there is no fear of it.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing a gasket.

FIG. 3 is a cross-sectional view showing a main part.

FIG. 4 is a cross-sectional view of the main part showing a state where the difference in thermal expansion between the inner cylinder and the outer cylinder is small.

FIG. 5 is a cross-sectional view of the main part showing a state where there is a large difference in thermal expansion between the inner cylinder and the outer cylinder.

[Explanation of symbols]

1 Inner cylinder 2 Left side flange 3 Right side flange 4 Packing 5 Packing 6 Inner wall 7 Outer wall 8 Sleeve 9 Fixing screw 10 Fixing screw 11 Projecting edge 12 Packing 13 Projecting annular part 14 Packing 15 Outer cylinder 21 End cover 22 Flange 23 Flange 24 Clamp 25 End Lid 26 Flange 27 Flange 28 Clamp 29 Cutout 30 Projected end 31 Inclined surface 32 Gasket groove 33 Cutout 34 Projected end 35 Inclined surface 36 Gasket groove 37 Cutout 38 Cutout 39 Cut 41 Gasket 42 Gasket 44 Bearing hole 45 Bearing hole 46 Stay 47 Inlet 48 Outlet 49 Inlet 50 Outlet 51 Key

Claims (2)

[Scope of utility model registration request] 1. A space formed between the outer surface of the inner cylinder and the inner surface of the outer cylinder and sealed by packing the inner surfaces of both ends of the outer cylinder and the outer surfaces of both ends of the inner cylinder with a packing. The heat transfer process is applied to the product that the medium moves and moves in the inner cylinder, and the inlet end and the outlet end of the product whose inner diameter is the same as the inner diameter of the inner cylinder. A scraped heat exchanger characterized by having the following requirements, in which pipe connection end caps are connected with a flange pipe joint. The flange of the flange pipe joint is provided on the inlet side end of the outer cylinder and the opening peripheral edge of the inlet pipe connecting end cover facing the inlet side end, and not provided on the inner cylinder end. L-shaped cutting of the inner peripheral edge of the pressure contact surface of the flange provided on the inlet side end of the outer cylinder and the opening peripheral edge of the inlet pipe connecting end cover, and L-shaped cutting of the inner cylinder end on the flange of the outer cylinder. The gasket groove is formed by providing a state in which it is projected inside the portion, and by making the end surface of the projecting end an inclined surface that is higher near the side through which the product passes and lower near the outer cylinder. Insert a gasket whose cross-sectional shape differs from that of the gasket groove in the following points. The outer corners of the gasket, which are fitted into the L-shaped cutting portion provided on the flange of the inlet pipe connecting end cover, are diagonally cut. 2. The scraped heat exchanger according to claim 1, wherein the scraped heat exchanger has the following requirements. The flange of the flange pipe joint is provided on the outlet side end of the outer cylinder and the opening peripheral edge of the outlet pipe connecting end facing the outlet side end, but not on the inner cylinder end. L-shaped cutting of the inner peripheral edge of the pressure contact surface of the flange provided on the outlet side end of the outer cylinder and the opening peripheral edge of the outlet pipe connecting end, and L-shaped cutting of the inner cylinder end on the outer cylinder flange. The gasket groove is formed by providing a state in which it is projected inside the portion, and by making the end surface of the projecting end an inclined surface that is higher near the side through which the product passes and lower near the outer cylinder. Insert a gasket with a cross-sectional shape that differs from the cross-sectional shape of the gasket groove in the following points into the gasket groove. Outer corners of the gasket that are fitted into the L-shaped cutouts provided on the flange of the outlet pipe connecting end cover are cut off obliquely.