Plate-shell type heat exchanger

Abstract

The lamella heat exchanger comprises a shell, an opening is formed in one end of the shell, a cover plate covering the opening is arranged at the opening, the cover plate is provided with a second step part, the second step part makes contact with the outer wall of the shell and is connected with a rotatable limiting ring, and the limiting ring is provided with a first limiting block extending towards the outer wall of the shell. A second limiting block is arranged on the outer wall of the shell, a first inclined face is arranged on the lower end face of the second limiting block, and the first limiting block rotates along with the limiting ring, moves to the position below the second limiting block along the first inclined face and abuts against the lower end face of the second limiting block. Through rotation of the limiting ring, the first limiting block can be driven to rotate, so that the first limiting block abuts against the second limiting block, stable connection between the cover plate and the shell is guaranteed, meanwhile, connection between the cover plate and the shell can be locked or unlocked only by rotating the limiting ring, disassembly and assembly of the cover plate are facilitated, and cleaning of an internal structure is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and more specifically, to a plate-shell heat exchanger. Background Art

[0002] There will be heat exchange between different media inside the heat exchanger, and the inside of the heat exchanger needs to be cleaned when replacing the media. The cover plate installed at the end of the heat exchanger is usually connected to the shell of the heat exchanger through a flange structure. When it is necessary to clean the internal structure, the flange connection needs to be disassembled, which is rather cumbersome. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a plate-shell heat exchanger with convenient disassembly and assembly of the cover plate.

[0004] To achieve the above purpose, the present invention adopts the following technical scheme: A plate-shell heat exchanger includes a shell, one end of the shell is provided with an opening, a cover plate covering the opening is provided at the opening, the cover plate is provided with a second step portion, the second step portion contacts the outer wall of the shell, the second step portion is connected with a rotatable limit ring, the limit ring is provided with a first limit block extending towards the outer wall of the shell, the outer wall of the shell is provided with a second limit block, a first inclined surface is provided on the lower end surface of the second limit block, and the first limit block rotates with the limit ring and moves along the first inclined surface to the lower part of the second limit block and abuts against the lower end surface of the second limit block.

[0005] Further, a first guiding groove is provided on the outer wall of the shell, the second limit block is provided with a first guiding block embedded in the first guiding groove, and a first spring is provided in the first guiding groove to push the first guiding block to move downward.

[0006] Further, a telescopic groove penetrating the side wall of the shell is provided on the side wall of the shell, a movable first positioning rod is provided in the telescopic groove, the cover plate is provided with a first positioning groove corresponding to the position of the first positioning rod, and the first positioning rod is inserted into the first positioning groove to limit the movement of the cover plate.

[0007] Further, a second guiding groove is provided on the side wall of the telescopic groove, the first positioning rod is provided with a second guiding block embedded in the second guiding groove, and a second spring for pushing the second guiding block to move towards the outside of the shell is provided in the second guiding groove.

[0008] Further, a support ring is connected to the outer wall of the shell, the support ring is provided with a movable third limit block, a second inclined surface is provided on the surface of the third limit block facing the shell, and the second inclined surface abuts against the first positioning rod.

[0009] Further, a third inclined surface is provided on the upper end surface of the third limiting block, and the first limiting block rotates with the limiting ring and moves along the third inclined surface to above the third limiting block and abuts against the upper end surface of the third limiting block.

[0010] Further, the support ring includes a first ring body connecting the housing and a second ring body connecting the first ring body. The first ring body is provided with a second positioning rod extending towards the third limiting block, and the third limiting block is provided with a second positioning groove corresponding to the position of the second positioning rod. The second positioning rod is inserted into the second positioning groove, and a third spring is sleeved on the second positioning rod. Two ends of the third spring respectively abut against the third limiting block and the first ring body.

[0011] Further, the second ring body is provided with a third guiding groove, and the third limiting block is provided with a third guiding block embedded in the third guiding groove.

[0012] Further, the cover plate is provided with a first sealing portion embedded in the opening, the inner wall of the housing is provided with a first stepped portion, the first stepped portion is provided with a sealing groove, and a sealing ring is embedded in the sealing groove. The first sealing portion abuts against the sealing ring.

[0013] In summary, the present invention has the following beneficial effects:

[0014] 1. The cover plate is connected with a rotatable limiting ring. The limiting ring is provided with a first limiting block, and the housing is provided with a second limiting block. By rotating the limiting ring, the first limiting block can be driven to rotate so that the first limiting block abuts against the second limiting block, thereby ensuring the stable connection between the cover plate and the housing. At the same time, only by rotating the limiting ring, the connection between the cover plate and the housing can be locked or unlocked, which is convenient for the disassembly and assembly of the cover plate, and thus convenient for cleaning the internal structure.

[0015] 2. A support ring is provided outside the housing. The support ring is provided with a third limiting block. At the same time, a first positioning rod is provided on the housing, and a first positioning groove is provided on the cover plate. The third limiting block can be driven to move by the first limiting block, and the movement of the third limiting block can drive the movement of the first positioning rod, so that the first positioning rod is inserted into or pulled out of the first positioning groove, thereby realizing the locking or unlocking of the cover plate, and further strengthening the stability of the connection between the cover plate and the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present invention;

[0017] Figure 2 is a schematic structural diagram when the cover plate is separated from the housing;

[0018] Figure 3 is Figure 2Enlarged view of part A in [the figure];

[0019] Figure 4 is Figure 2 Enlarged view of part B in [the figure];

[0020] Figure 5 Schematic diagram of the internal structure of the housing;

[0021] Figure 6 is Figure 5 Enlarged view of part C in [the figure];

[0022] Reference numerals: housing 100, opening 101, telescopic groove 102, heat exchange element 103, mounting rod 104, first connection port 110, first step portion 120, sealing groove 121, sealing ring 122, first guide groove 130, first guide rod 131, first spring 132, second guide groove 140, second guide rod 141, second spring 142, cover plate 200, handle 201, second step portion 202, second connection port 210, first sealing portion 220, second sealing portion 230, first positioning groove 231, limiting ring 300, bearing 310, first limiting block 320, support ring 400, first ring body 410, second ring body 420, second positioning rod 411, third spring 412, second ring body 420, third guide groove 421, second limiting block 500, first guide block 501, first inclined surface 510, third limiting block 600, second inclined surface 610, third inclined surface 620, third guide block 630, second positioning groove 640, first positioning rod 700, second guide block 710. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Refer to Figures 1 to 6, this embodiment discloses a plate-shell heat exchanger, which includes a housing 100. One end of the housing 100 is provided with an opening 101, and a cover plate 200 covering the opening 101 is arranged at the opening 101. An installation rod 104 is inserted into the bottom of the housing 100, and the other end of the installation rod 104 is inserted and matched with the cover plate 200. A plurality of heat exchange elements 103 arranged at equal intervals are connected to the installation rod 104. The heat exchange element 103 is composed of two plate pieces. The edges of the two plate pieces are connected by welding and a hole for the installation rod 104 to pass through is opened in the middle. The housing 100 is connected with two first connection ports 110, and the two first connection ports 110 are respectively a shell-side inlet and a shell-side outlet. The cover plate 200 is connected with two second connection ports 210, and the two second connection ports 210 are respectively a plate-side inlet and a plate-side outlet.

[0025] The cover plate 200 is provided with a first sealing portion 220 embedded in the opening 101. The inner wall of the housing 100 is provided with a first step portion 120. The first step portion 120 is provided with a sealing groove 121, and a sealing ring 122 is embedded in the sealing groove 121. The first sealing portion 220 abuts against the sealing ring 122. The sealing ring 122 is made of rubber and has elasticity. When the sealing ring 122 is embedded in the sealing groove 121, a part of the sealing ring 122 extends out of the sealing groove 121. When the cover plate 200 is installed in the opening 101, the first sealing portion 220 and the first step portion 120 enable the first sealing portion 220 to squeeze the sealing ring 122 to cause the sealing ring 122 to deform, so as to fill the gap between the sealing groove 121 and the first sealing portion 220, and ensure the sealing ability of the cover plate 200 for the opening 101.

[0026] The edge of the cover plate 200 is provided with a second step portion 202. The second step portion 202 extends towards the housing 100 so that when the cover plate 200 is installed in the opening 101, the inner wall of the second step portion 202 fits against the outer wall of the housing 100, thereby strengthening the connection stability between the housing 100 and the cover plate 200. The outer wall of the second step portion 202 is connected with a limit ring 300 through a bearing 310, so that the limit ring 300 can rotate relative to the second step portion 202. At the same time, a handle 201 is arranged on the outer wall of the limit ring 300, which can facilitate the rotation of the limit ring 300. One end of the limit ring 300 facing the housing 100 is connected with a first limit block 320 extending towards the outer wall of the housing 100. The outer wall of the housing 100 is provided with a second limit block 500. The outer wall of the housing 100 is provided with a first guide groove 130. A first guide rod 131 is arranged in the first guide groove 130. The second limit block 500 is provided with a first guide block 501 embedded in the first guide groove 130. The first guide rod 131 passes through the first guide block 501, which can prevent the first guide block 501 from shifting when moving. A first spring 132 is arranged in the first guide groove 130. The first spring 132 is sleeved on the first guide rod 131, and the first spring 132 can push the first guide block 501 to move downward.

[0027] A first inclined surface 510 is provided on the lower end surface of the second limiting block 500. Under normal conditions, the second limiting block 500 and the first limiting block 320 are arranged vertically offset. The second limiting block 500 is slightly higher than the first limiting block 320 so that the first limiting block 320 can contact the first inclined surface 510. After the first sealing portion 220 is inserted into the opening 101, rotating the limiting ring 300 can drive the rotation of the first limiting block 320. When the first limiting block 320 collides with the second limiting block 500, the first limiting block 320 moves along the first inclined surface 510 to the lower side of the second limiting block 500. Under the action of the first spring 132, the first limiting block 320 remains in contact with the second limiting block 500, thereby ensuring the connection stability between the cover plate 200 and the housing 100.

[0028] A through expansion slot 102 is provided in the side wall of the housing 100. A first positioning rod 700 is arranged in the expansion slot 102. A second guiding slot 140 is provided in the side wall of the expansion slot 102. A second guiding rod 141 is arranged in the second guiding slot 140. The first positioning rod 700 is provided with a second guiding block 710 inserted into the second guiding slot 140. The second guiding rod 141 passes through the second guiding block 710, which can prevent the second guiding block 710 from shifting when moving. A second spring 142 sleeved on the second guiding rod 141 is arranged in the second guiding slot 140. The two ends of the second spring 142 are respectively in contact with the second guiding block 710 and one end of the second guiding slot 140 facing the inside of the housing 100, so as to be able to push the second guiding block 710 and the first positioning rod 700 to move towards the outside of the housing 100. The first sealing portion 220 is provided with a downward extending second sealing portion 230. The second sealing portion 230 fits with the inner wall of the first step portion 120 to ensure the sealing performance. A first positioning groove 231 corresponding to the position of the first positioning rod 700 is provided on the side wall of the second sealing portion 230. When the first positioning rod 700 is inserted into the first positioning groove 231, the movement of the cover plate 200 can be restricted, thereby ensuring the connection stability and sealing performance between the cover plate 200 and the housing 100.

[0029] A support ring 400 is connected to the outer wall of the housing 100. The support ring 400 is provided with a movable third limiting block 600. A second inclined surface 610 is provided on the side of the third limiting block 600 facing the housing 100. The second inclined surface 610 abuts against the first positioning rod 700. By moving the third limiting block 600, the movement of the first positioning rod 700 can be driven, so that the first positioning rod 700 can be inserted into or pulled out of the first positioning groove 231, realizing the locking and unlocking of the cover plate 200.

[0030] The support ring 400 includes a first ring body 410 connecting to the housing 100 and a second ring body 420 connecting to the first ring body 410. The first ring body 410 is provided with a second positioning rod 411 extending towards the third limiting block 600. The third limiting block 600 is provided with a second positioning groove 640 corresponding to the position of the second positioning rod 411. The second positioning rod 411 is inserted into the second positioning groove 640. A third spring 412 is sleeved on the second positioning rod 411. The two ends of the third spring 412 respectively abut against the third limiting block 600 and the first ring body 410, so as to be able to push the third limiting block 600 to move towards the first limiting block 320. At the same time, a third guiding groove 421 is provided on the second ring body 420, and the third limiting block 600 is provided with a third guiding block 630 embedded in the third guiding groove 421. Through the cooperation of the third guiding groove 421 and the third guiding block 630, it can prevent the third guiding block 630 from generating an offset during movement and ensure the stability of the movement of the third guiding block 630.

[0031] The third limiting block 600 and the first limiting block 320 are arranged vertically offset. The first limiting block 320 is slightly higher than the third limiting block 600. The upper end surface of the third limiting block 600 is provided with a third inclined surface 620. When the first limiting block 320 rotates with the limiting ring 300 and collides with the third limiting block 600, the first limiting block 320 moves along the third inclined surface 620 to above the third limiting block 600, so that the first limiting block 320 pushes the third limiting block 600 to move downward, thereby pushing the first positioning rod 700 to move. At the same time, under the action of the third spring 412, the third limiting block 600 and the first limiting block 320 remain in contact, so that the first positioning rod 700 remains in the state of being inserted into the first positioning groove 231, thereby locking the cover plate 200.

[0032] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A plate-shell heat exchanger, characterized in that, It includes a housing (100), one end of the housing (100) is provided with an opening (101), a cover plate (200) covering the opening (101) is arranged at the opening (101), the cover plate (200) is provided with a second step portion (202), the second step portion (202) contacts the outer wall of the housing (100), a rotatable limiting ring (300) is connected to the second step portion (202), the limiting ring (300) is provided with a first limiting block (320) extending towards the outer wall of the housing (100), the outer wall of the housing (100) is provided with a second limiting block (500), a first inclined surface (510) is arranged on the lower end surface of the second limiting block (500), and the first limiting block (320) rotates with the limiting ring (300) and moves along the first inclined surface (510) to the lower part of the second limiting block (500) and abuts against the lower end surface of the second limiting block (500).

2. The plate-shell heat exchanger according to claim 1, wherein, A first guiding groove (130) is arranged on the outer wall of the housing (100), a first guiding block (501) inserted into the first guiding groove (130) is arranged on the second limiting block (500), and a first spring (132) is arranged in the first guiding groove (130), and the first spring (132) pushes the first guiding block (501) to move downwards.

3. A plate-shell heat exchanger according to claim 1, characterized in that, A through-going telescopic groove (102) is arranged on the side wall of the housing (100), a movable first positioning rod (700) is arranged in the telescopic groove (102), a first positioning groove (231) corresponding to the position of the first positioning rod (700) is arranged on the cover plate (200), and the first positioning rod (700) is inserted into the first positioning groove (231) to limit the movement of the cover plate (200).

4. The plate-shell heat exchanger according to claim 3, wherein, A second guiding groove (140) is arranged on the side wall of the telescopic groove (102), a second guiding block (710) inserted into the second guiding groove (140) is arranged on the first positioning rod (700), and a second spring (142) pushing the second guiding block (710) to move towards the outside of the housing (100) is arranged in the second guiding groove (140).

5. A plate-shell heat exchanger according to claim 3, characterized in that, A supporting ring (400) is connected to the outer wall of the housing (100), a movable third limiting block (600) is arranged on the supporting ring (400), a second inclined surface (610) is arranged on the surface of the third limiting block (600) facing the housing (100), and the second inclined surface (610) abuts against the first positioning rod (700).

6. A plate-shell heat exchanger according to claim 5, characterized in that, A third inclined surface (620) is arranged on the upper end surface of the third limiting block (600), and the first limiting block (320) rotates with the limiting ring (300) and moves along the third inclined surface (620) to the upper part of the third limiting block (600) and abuts against the upper end surface of the third limiting block (600).

7. A plate-shell heat exchanger according to claim 6, characterized in that, The support ring (400) includes a first ring body (410) connecting the housing (100) and a second ring body (420) connecting the first ring body (410). The first ring body (410) is provided with a second positioning rod (411) extending towards the third limiting block (600). The third limiting block (600) is provided with a second positioning groove (640) corresponding to the position of the second positioning rod (411). The second positioning rod (411) is inserted into the second positioning groove (640). A third spring (412) is sleeved on the second positioning rod (411). Two ends of the third spring (412) respectively abut against the third limiting block (600) and the first ring body (410).

8. A plate-shell heat exchanger according to claim 7, characterized in that, The second ring body (420) is provided with a third guiding groove (421). The third limiting block (600) is provided with a third guiding block (630) embedded in the third guiding groove (421).

9. The plate-shell heat exchanger according to claim 1, wherein The cover plate (200) is provided with a first sealing portion (220) embedded in the opening (101). The inner wall of the housing (100) is provided with a first stepped portion (120). The first stepped portion (120) is provided with a sealing groove (121). A sealing ring (122) is embedded in the sealing groove (121). The first sealing portion (220) abuts against the sealing ring (122).

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